As filed with the Securities and Exchange Commission on October 31, 1997
                                                     Registration No. 333-
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                ---------------

                                    FORM S-3
                             REGISTRATION STATEMENT
                                     Under
                           THE SECURITIES ACT OF 1933

                                ---------------

                            INTER-TEL, INCORPORATED
             (Exact name of Registrant as specified in its charter)

             Arizona                                          86-0220994     
      --------------------                              ---------------------
 (State or other jurisdiction of                           (I.R.S. Employer  
of incorporation or organization)                        Identification No.) 

                        120 North 44th Street, Suite 200
                           Phoenix, Arizona 85304-1822
                                 (602) 302-8900
   (Address, including zip code and telephone number, including area code, of
                    Registrant's principal executive offices)

                                 ---------------

                                STEVEN G. MIHAYLO
                       Chairman of the Board of Directors
                           and Chief Executive Officer
                             Inter-Tel, Incorporated
                        120 North 44th Street, Suite 200
                           Phoenix, Arizona 85034-1822
                                 (602) 302-8900
  (Name, address, including zip code and telephone number, including area code,
                              of agent for service)

                                ---------------

                                   Copies to:

     Jeffrey D. Saper, Esq.                           Stanton D. Wong, Esq.     
  Patrick J. Schultheis, Esq.                         Karen A. Dempsey, Esq.    
      Robert G. Day, Esq.                           Shannon M. Hernandez, Esq.  
      Caine T. Moss, Esq.                         Pillsbury Madison & Sutro LLP 
Wilson Sonsini Goodrich & Rosati                          P. O. Box 7880        
    Professional Corporation                     San Francisco, California 94120
       650 Page Mill Road                                 (415) 983-1000        
Palo Alto, California 94304-1050                  
         (650) 493-9300

                                ---------------

        Approximate date of commencement of proposed sale to the public:
As soon as practicable after the effective date of this Registration Statement.

                                ---------------

     If the only  securities  being  registered  on this Form are being  offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. [ ]

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [ ]

     If this Form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [ ]

     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [ ]

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]

                                ---------------

                        CALCULATION OF REGISTRATION FEE
====================================================================================================================================

 Title of each class of securities     Amount to be     Proposed maximum offering   Proposed maximum agregate      Amount of
         to be registered             registered(1)        price per share(2)           offering price(2)       registration fee
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                        
Common Stock, no par value ........  3,530,500 shares            $22.25                    $78,553,625              $23,805
====================================================================================================================================
<FN>
(1)  Includes 460,500 shares which the Underwriters  have the option to purchase
     to cover over-allotments, if any.

(2)  Estimated   solely  for  the  purpose  of  computing   the  amount  of  the
     registration  fee,  based on the average of the high and low prices for the
     Common Stock as reported on the Nasdaq National Market on October 27, 1997,
     in accordance  with Rule 457(c)  promulgated  under the  Securities  Act of
     1933, as amended.
</FN>

                                 ---------------

     The Registrant  hereby amends this  Registration  Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a further  amendment  which  specifically  states  that  this  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933, as amended,  or until the  Registration  Statement
shall become  effective on such date as the Commission,  acting pursuant to said
Section 8(a), may determine.
================================================================================


Information   contained  herein  is  subject  to  completion  or  amendment.   A
registration  statement  relating  to these  securities  has been filed with the
Securuties  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective.  This  prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.

                  SUBJECT TO COMPLETION, DATED OCTOBER 31, 1997

                                3,070,000 Shares

                               [GRAPHIC OMITTED]
                                        
                                  Common Stock

     Of the 3,070,000  shares of Common Stock offered hereby,  3,000,000  shares
are being sold by Inter-Tel,  Incorporated  ("Inter-Tel"  or the  "Company") and
70,000 shares are being sold by the Selling  Shareholders.  The Company will not
receive any of the proceeds from the sale of shares by the Selling Shareholders.
The  Company's  Common Stock is traded on the Nasdaq  National  Market under the
symbol INTL.  On October 29, 1997,  the last  reported  sale price of the Common
Stock on the Nasdaq National  Market was $24.375 per share.  See "Price Range of
Common Stock."

     This offering involves a high degree of risk. See "Risk Factors" commencing
on page 5 for a  discussion  of certain  factors  that should be  considered  by
prospective purchasers of the Common Stock offered hereby.

                               ----------------

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.



====================================================================================================================================
                                         Price to         Underwriting           Proceeds to         Proceeds to Selling   
                                          Public          Discount(1)            Company(2)             Shareholders       
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                 
Per Share .............................     $                  $                      $                      $                      
Total(3)  .............................     $                  $                      $                      $
====================================================================================================================================
<FN>
(1)  See  "Underwriting"  for  information  concerning  indemnification  of  the
     Underwriters and other matters.

(2)  Before deducting expenses payable by the Company estimated at $700,000.

(3)  The Selling  Shareholders  have granted to the Underwriters a 30-day option
     to purchase up to 460,500 additional shares of Common Stock solely to cover
     over-allotments,  if any. If the Underwriters exercise this option in full,
     the Price to Public will total $ , the  Underwriting  Discount will total $
     and the Proceeds to Selling Shareholders will total $ . See "Underwriting."
</FN>


     The  shares  of  Common Stock are offered by the several Underwriters named
herein,  subject to receipt and acceptance by them and subject to their right to
reject  any  order  in  whole  or  in  part. It is expected that delivery of the
certificates  representing  such shares will be made against payment therefor at
the  office  of  NationsBanc  Montgomery  Securities,  Inc. on or about        ,
1997.

                               ----------------

NATIONSBANC MONTGOMERY SECURITIES, INC.

                          DONALDSON, LUFKIN & JENRETTE
                             SECURITIES  CORPORATION

                                                       JEFFERIES & COMPANY, INC.

                                        , 1997



                             AVAILABLE INFORMATION

     The  Company  is  subject to the information requirements of the Securities
Exchange  Act  of  1934,  as  amended  (the  "Exchange  Act"), and in accordance
therewith  files reports, proxy and information statements and other information
with  the  Securities and Exchange Commission (the "Commission"). Reports, proxy
statements  and  other  information  may  be inspected and copied (at prescribed
rates)  at  the public reference facilities maintained by the Commission at Room
1024,  450  Fifth  Street, N.W., Washington, D.C. 20549, and at the Commission's
regional  offices located at 75 Park Place, 14th Floor, New York, New York 10047
and  500  West  Madison  Street,  Suite 1400, Chicago, Illinois 60661. Copies of
such  material  also  can  be  obtained  from the Public Reference Branch of the
Commission  at  450  Fifth  Street,  N.W., Washington, D.C. 20549, at prescribed
rates.  The  Commission  maintains  a  World Wide Web site at http://www.sec.gov
that  contains  reports,  proxy and information statements and other information
regarding registrants that are filed electronically with the Commission.

     The  Company has filed with the Commission a registration statement on Form
S-3  (herein,  together  with  all  amendments  and exhibits, referred to as the
"Registration  Statement")  under  the  Securities  Act of 1933, as amended (the
"Securities  Act").  This Prospectus does not contain all of the information set
forth  in  the  Registration  Statement,  certain  parts of which are omitted in
accordance  with  the  rules  and  regulations  of  the  Commission. For further
information, reference is hereby made to the Registration Statement.


                     INFORMATION INCORPORATED BY REFERENCE

     The  following  documents  filed  with  the  Commission  (File No. 0-10211)
pursuant to the Exchange Act are incorporated herein by reference:

     1.   The  Company's  Annual  Report on Form 10-K for the fiscal  year ended
          December 31, 1996.

     2.   The Company's  Quarterly  Reports on Form 10-Q for the quarters  ended
          March 31 and June 30, 1997.

     3.   The  description  of  the  Company's  Common  Stock  contained  in its
          Registration  Statement  on Form  8-A  filed  with the  Commission  on
          February 26, 1982 pursuant to Section 12(g) of the Exchange Act.

     4.   All  reports  and other  documents  subsequently  filed by the Company
          pursuant to Sections  13(a),  13(c),  14 or 15(d) of the  Exchange Act
          after the date of this Prospectus and prior to the termination of this
          offering.
      

     Any  statement  incorporated  herein  shall be  deemed  to be  modified  or
superseded  for  purposes  of this  Prospectus  to the extent  that a  statement
contained herein, in a Prospectus  Supplement or in any other subsequently filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies or supersedes such  statement.  Any statement so modified or superseded
shall not be deemed,  except as so modified or superseded,  to constitute a part
of the Registration Statement or this Prospectus.

     The Company  will provide  without  charge to each  person,  including  any
beneficial owner, to whom this Prospectus is delivered, upon the written or oral
request  of  such  person,  a copy of any and  all of the  documents  which  are
incorporated herein by reference (other than exhibits to such documents,  unless
such exhibits are  specifically  incorporated  by reference into such document).
Requests for such documents should be directed to Inter-Tel,  Incorporated,  120
North 44th Street, Suite 200, Phoenix,  Arizona 85034-1822,  or by calling (602)
302-8900.

                                   -----------

     CERTAIN PERSONS  PARTICIPATING  IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT  STABILIZE,  MAINTAIN,  OR  OTHERWISE  AFFECT THE PRICE OF THE COMMON STOCK
OFFERED  HEREBY.  SUCH  TRANSACTIONS  MAY INCLUDE  STABILIZING,  THE PURCHASE OF
COMMON STOCK TO COVER  SYNDICATE  SHORT  POSITIONS AND THE IMPOSITION OF PENALTY
BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE "UNDERWRITING."

     IN CONNECTION WITH THIS OFFERING,  CERTAIN  UNDERWRITERS  AND SELLING GROUP
MEMBERS (IF ANY) MAY ENGAGE IN PASSIVE MARKET MAKING  TRANSACTIONS IN THE COMMON
STOCK ON THE NASDAQ NATIONAL MARKET IN ACCORDANCE WITH RULE 103 OF REGULATION M.
SEE "UNDERWRITING."

                                   -----------

     "Inter-Tel,"   "AXXESS,"  "AXXESSORY  Talk,"  "AXXESSORY  ACD,"  "AXXESSORY
Connect,"  "Inter-Tel.net,"  "Visual Mail" and "Vocal'Net" are trademarks of the
Company. This Prospectus also includes trademarks of other companies.


                                       2



                              PROSPECTUS SUMMARY

     The  following  summary  is  qualified in its entirety by the more detailed
information,  including "Risk Factors" and consolidated financial statements and
notes  thereto,  appearing elsewhere in, or incorporated by reference into, this
Prospectus.  In this Prospectus, the words "expects," "anticipates," "believes,"
"intends,"  "will"  and similar expressions identify forward-looking statements,
which  speak  only  as  of the date hereof, and are subject to certain risks and
uncertainties.  The  Company's  actual  results  may  differ materially from the
results  discussed  in  such  forward-looking statements. Factors that may cause
such  a  difference  include,  but  are not limited to, those discussed in "Risk
Factors."  Unless  otherwise indicated, (i) all share and per share data in this
Prospectus  have been adjusted to give effect to the Company's two-for-one stock
split,  effected  in  the form of a 100% stock dividend, paid to shareholders on
October  21,  1997  (the  "Stock Split"), (ii) the information contained in this
Prospectus assumes no exercise of the Underwriters' over-allotment   option  and
(iii)  references  in  this  Prospectus to "Inter-Tel"and the "Company" refer to
Inter-Tel, Incorporated and its subsidiaries.


                                  The Company

     Inter-Tel  is a single point of contact,  full service  provider of digital
business  telephone  systems,   Internet  protocol  ("IP")  telephony  products,
computer-telephone  integration ("CTI") applications,  voice processing software
and long distance calling  services.  Inter-Tel's  products and services include
the AXXESS and Inter-Tel Axxent digital business  communication  platforms,  the
AXXESSORY Talk voice processing platform, the Vocal'Net IP telephony gateway and
the  Inter-Tel.net  private IP  telephony  network.  The Company  also  provides
maintenance, leasing and support services for its products. The Company believes
that it is a  leading  supplier  of  small to  medium  size  business  telephone
systems.

     The  Company's  strategy  is  to  offer  its  customers,  through  a  broad
distribution   network,   a   single   source   for   their   full   range   of
telecommunications  requirements  and  to  provide  its  targeted market segment
advanced  technologies  on a cost-effective basis. The Company believes that its
customers  prefer  to  purchase telecommunications equipment and services from a
single  source  because  of  the  convenience,  consistency  of service, ease of
upgrade  and  confidence  in the performance of integrated systems and services.
The  Company  has  developed  a  distribution  network  of direct sales offices,
dealers  and value added resellers ("VARs") which sell the Company's products to
small  and  medium  size organizations and to divisions or departments of larger
organizations,  such  as  Fortune 500 companies, large service organizations and
governmental  agencies.  The  Company  has 29 direct sales offices in the United
States,  one  in  the  United Kingdom, one in Japan and a network of hundreds of
dealers and VARs who purchase directly from the Company.

     In  September  1997,  the  Company  released  Vocal'Net,  a  stand-alone IP
telephony  gateway  that  can  be  used  with the AXXESS system or virtually any
business  telephone  system  equipped  with  T-1/E-1, ISDN or analog capability.
Vocal'Net   provides   a  gateway  for  bridging  traditional  circuit  switched
telephone  networks  and  IP  packet  switched networks such as the Internet and
corporate  intranets. With Vocal'Net, users can conduct real-time, two-way voice
communications  over  IP  networks  and  realize  potential  savings compared to
standard   long  distance  phone  service.  In  addition  to  targeting  private
enterprises  for  their  independent  use  of the Vocal'Net gateway, the Company
seeks  to  enter  into  relationships  with Internet service providers ("ISPs"),
cable  television  companies,  telephone  service  providers  and companies with
extensive  IP  data  networks  to  build  IP  telephony  networks.  Inter-Tel is
developing  and  implementing  Inter-Tel.net,  a  private IP network designed to
carry  long  distance  telephone traffic. To date, the Inter-Tel.net network has
established  points of presence in the San Francisco Bay Area, Washington, D.C.,
Chicago, New York, Phoenix and Los Angeles.

     Inter-Tel  was  founded  in  1969  and  is  incorporated  in  Arizona.  The
Company's  principal  offices  are  located at 120 North 44th Street, Suite 200,
Phoenix,  Arizona  85034-1822, and its telephone number at that address is (602)
302-8900.


                                       3




                                  The Offering

                                                     
Common Stock offered by the Company  .................. 3,000,000 shares
Common Stock offered by the Selling Shareholders ......    70,000 shares
Common Stock to be outstanding after the Offering ..... 26,553,942 shares(1)
Use of Proceeds    .................................... To develop and expand Inter-Tel.net and for
                                                        potential acquisitions, strategic alliances,
                                                        working capital and general corporate
                                                        purposes
Nasdaq National Market Symbol  ........................ INTL



                      Summary Consolidated Financial Data
                     (in thousands, except per share data)


                                                                                                           Nine Months Ended
                                                          Year Ended December 31,                            September 30,
                                   --------------------------------------------------------------------- ----------------------
                                     1992       1993        1994           1995              1996           1996        1997
                                   --------- ----------- ----------- ----------------- ----------------- ----------- ----------
                                                                                                
Statement of Operations Data:
 Net sales   ..................... $88,120   $ 103,373   $ 123,878    $   150,533       $   185,884      $ 133,384   $ 162,061
 Gross profit   ..................  34,089      40,285      49,845         62,837            80,918         58,036      72,870
 Operating income  ...............   5,121       6,489       8,806         12,180(2)         13,409(3)      12,870      15,983
 Net income  ..................... $ 3,164   $   3,941   $   5,940    $     8,499(2)    $     9,042(3)   $   8,372   $  10,072
                                   ========  ==========  ==========   ===========       ===========      ==========  ==========
 Net income per share(4):                                                                              
  Primary    ..................... $  0.18   $    0.22   $    0.27    $      0.35(2)    $      0.34(3)   $    0.31   $    0.39
                                   ========  ==========  ==========   ===========       ===========      ==========  ==========
  Fully diluted    ............... $  0.18   $    0.22   $    0.27    $      0.35(2)    $      0.34(3)   $    0.31   $    0.37
                                   ========  ==========  ==========   ===========       ===========      ==========  ==========
 Weighted average shares and share
  equivalents(4):
  Primary    .....................  17,320      18,060      21,800         24,002            26,790         26,720      26,035
  Fully diluted    ...............  17,320      18,132      21,800         24,048            26,794         26,796      27,155



                                      September 30, 1997
                                 ----------------------------
                                   Actual      As Adjusted(5)
                                 ----------   ---------------
 Working capital  ............    $ 62,206       $130,975
 Total assets  ...............     125,282        194,051
 Shareholders' equity   ......      79,543        148,312

- ------------

(1)  Based upon shares  outstanding  as of  September  30,  1997.  Excludes  (i)
     3,018,150  shares reserved for issuance upon exercise of outstanding  stock
     options as of  September  30,  1997 and (ii)  1,994,776  additional  shares
     reserved for future  issuance  pursuant to the  Company's  stock option and
     employee stock purchase plans.

(2)  Operating  income in the year ended  December  31, 1995  includes a special
     charge of  $1,315,000,  which reduced net income by $815,000,  or $0.03 per
     share after tax. This special  charge  reflects the costs  associated  with
     integrating  the operations of American  Telcom Corp. of Georgia,  Inc. and
     Access  West,  Inc.  Without this special  charge,  the Company  would have
     reported operating income of approximately  $13.5 million and net income of
     approximately $9.3 million, or $0.39 per share for such period.

(3)  Operating  income in the year ended  December  31, 1996  includes a special
     charge of $4,542,000,  which reduced net income by $2,725,000, or $0.10 per
     share after tax. This special  charge  reflects the decision by the Company
     to replace its MIS software. Without this special charge, the Company would
     have  reported  operating  income of  approximately  $18.0  million and net
     income of approximately $11.8 million, or $0.44 per share for such period.

(4)  Financial  data for all  periods  have been  restated  to reflect the Stock
     Split.

(5)  Adjusted to give  effect to the sale of  3,000,000  shares of Common  Stock
     offered  by the  Company  hereby at an  assumed  public  offering  price of
     $24.375 per share and the receipt of the estimated net proceeds  therefrom.
     See "Use of Proceeds" and "Capitalization."


                                       4



                                 RISK FACTORS

     This  Prospectus contains forward-looking statements that involve risks and
uncertainties.  The  statements contained in this Prospectus that are not purely
historical  are  forward-looking statements within the meaning of Section 27A of
the  Securities Act of 1933, as amended, including without limitation statements
regarding   the   Company's  expectations,  beliefs,  intentions  or  strategies
regarding  the  future. All forward-looking statements included in this document
are  based  on  information available to the Company on the date hereof, and the
Company  assumes  no  obligation  to update any such forward-looking statements.
The  cautionary  statements  made  in  this  Prospectus  should be read as being
applicable to all related forward-looking  statements  wherever  they  appear in
this  Prospectus.  The  Company's  actual  results  could differ materially from
those  anticipated  in  these  forward-looking statements as a result of certain
factors,  including  those set forth in the following risk factors and elsewhere
in  this Prospectus. In evaluating the Company's business, prospective investors
should  consider  carefully  the  following  factors  in  addition  to the other
information set forth in this Prospectus.


Rapid Technological Change; Dependence On Recently Introduced Products

     The   market   for   the  Company's  software,  products  and  services  is
characterized  by  rapid  technological  change  and  continuing  demand for new
products,  features and applications. Current competitors or new market entrants
may  develop  new  products  or product features that could adversely affect the
competitive   position  of  the  Company's  products.  Accordingly,  the  timely
introduction   of   new   products   and   product  features,  as  well  as  new
telecommunications  applications,  will  be  key factors in the Company's future
success.

     During  the past twelve months, the Company introduced unified messaging on
its  AXXESSORY Talk platform, developed a number of enhancements to its existing
AXXESS  and  AXXESSORY  Talk  platforms and introduced Vocal'Net. The Company is
also  currently  in  the  later  stages of developing the AXXESS 5.0 platform, a
significant  software  upgrade  and enhancement to its AXXESS and AXXESSORY Talk
platforms.  The  Company's  future  success will depend, in large part, upon the
timely  and  successful  introduction  of the AXXESS 5.0 platform. The Company's
future  success  will  also depend upon market acceptance of the Company's other
new  products  or  enhancements,  including Vocal'Net. There can be no assurance
that  these  introduced  products  and  enhancements  will be successful. In the
event  that  the  Company  were  to fail to successfully introduce new software,
products  or  services  or  upgrades  to  its  existing systems or products on a
regular  and  timely basis, demand for the Company's existing software, products
and  services  could  decline, which could have a material adverse effect on the
Company's  business  and  operating  results.  Further,  if  the  markets for IP
network  products  or  CTI applications fail to develop or grow more slowly than
the  Company  anticipates,  or  if  the  Company  is  unable  for  any reason to
capitalize  on  either  of  these  emerging  market opportunities, the Company's
business,  financial  condition  and  results  of operations could be materially
adversely affected.

     Occasionally,  new  products  contain  undetected  program errors or "bugs"
when  released. Such bugs may result from defects contained in software products
offered  by  the Company's suppliers or other third parties that are intended to
be  compatible with the Company's products, over which the Company has little or
no  control.  For example, in the third quarter of 1996, the Company's operating
results  were  adversely  impacted  by  a recall of the Inter-Tel Axxent digital
communication  platform.  Although  the  Company seeks to minimize the number of
bugs  in  its  products by its test procedures and quality control, there can be
no  assurance  that  its  new  products  will be error free when introduced. Any
significant  delay  in the commercial introduction of the Company's products due
to  bugs, any design modifications required to correct bugs or any impairment of
customer  satisfaction  as a result of bugs could have a material adverse effect
on  the  Company's  business  and  operating  results. In addition, new products
often  take several months before their manufacturing costs stabilize, which may
adversely  affect operating results for a period of time following introduction.
 


Developing Market for IP Network Telephony; Uncertain Regulatory Environment

     The  market  for IP network voice communications products has only recently
begun  to  develop,  is  rapidly  evolving and is characterized by an increasing
number of market entrants who have introduced or


                                       5



developed  products  and  services  for  Internet  or  other  IP  network  voice
communications.  As  is  typical  in  the  case  of  a  new and rapidly evolving
industry,  the  demand  for  and  market  acceptance  of  recently introduced IP
network  products  and  services  are  subject  to a high degree of uncertainty.
There  can  be  no  assurance  that  voice  communications over IP networks will
become  widespread.  Further,  even  if  voice  communications  over IP networks
achieve  broad  market  acceptance, there can be no assurance that the Company's
products, in particular Vocal'Net, will achieve market acceptance.

     The  adoption  of  voice communications over IP networks generally requires
the   acceptance  of  a  new  way  of  exchanging  information.  In  particular,
enterprises  that  have already invested substantial resources in other means of
communicating  information  may  be reluctant or slow to adopt a new approach to
communications.  The  lack  of  control  over IP network infrastructure and each
user's  system  configuration may cause users of IP network voice communications
delays  in  the transmission of speech, loss of voice packets and inferior sound
quality  relative  to  standard  telephony  networks. If these factors cause the
market  for  IP  network  voice  communications to fail to develop or to develop
more  slowly  than  the  Company anticipates, the Company's IP network telephony
products  could  fail  to  achieve market acceptance, which in turn could have a
material  adverse  effect  on  the  Company's  business, financial condition and
results of operations.

     The   regulatory  environment  for  IP  network  telephony  is  subject  to
substantial  uncertainty.  There can be no assurance that the sale and use of IP
network    telephony    products    such   as   Vocal'Net   will   not   violate
telecommunications  or  other  regulations in any of the countries in which such
products  are  or  will  be marketed and used. In the United States, the Company
believes  that  there  are currently few laws or regulations directly applicable
to  voice  communications  over  IP networks or to access to, or commerce on, IP
networks   generally.   However,   changes   in   the   regulatory  environment,
particularly  in  regulations relating to the telecommunications industry, could
have  a  material  adverse  effect  on  the  Company's  business.  The increased
commercial  acceptance  of voice communications over IP networks could result in
intervention  by  governmental  regulatory  agencies  in  the  United  States or
elsewhere  in  the  world under existing or newly enacted legislation and in the
imposition  of  fees,  charges  or  taxes on users and providers of products and
services  in  this  area.  There  can  be no assurance that such intervention or
imposition  of  fees,  charges or taxes would not have a material adverse effect
upon  the  acceptance  and  attractiveness  of  IP network voice communications.
Moreover,   legislative   proposals   from   international,  federal  and  state
government  bodies  could  impose  additional  regulations  and obligations upon
on-line  service  providers.  The growing popularity and use of the Internet has
increased  public  focus and could lead to increased pressure on legislatures to
impose  such  regulations.  While the Company is not aware of any other proposed
legislation  or  regulation  directly affecting its business, the Company cannot
predict  the  likelihood  that  any  future  legislation  or  regulation will be
enacted,  nor  the  financial  impact,  if any, of such resulting legislation or
regulation.  In  the  future,  the  Company may also develop and introduce other
products  with  new  or  additional telecommunications capabilities or services,
which  could  be subject to existing federal government regulations or result in
the  imposition  of  new  government regulations, either in the United States or
elsewhere.


Risks  Associated  with  Vocal'Net;  Dependence upon IP Network Infrastructures;
Risk of System Failure; Security Risks

     In  September 1997, the Company began commercial shipment of Vocal'Net, its
stand-alone  IP  telephony  gateway product and, to date, revenues from the sale
of  this  product  have  not  been  significant.  To  achieve market acceptance,
Vocal'Net  will  be  required  to demonstrate its functionality, scalability and
reliability,  of  which  there can be no assurance. In addition, there can be no
assurance  that  Vocal'Net  will comply with industry standards or that industry
standards  will  not  change  and  render  Vocal'Net obsolete. In the event that
Vocal'Net  fails to achieve market acceptance, the Company's business, financial
condition  and results of operations could be materially and adversely affected.
 

     The  success  of  Vocal'Net  will also depend upon, among other things, the
continued  expansion  of  the  Internet  and other IP networks and their network
infrastructures.   There   can  be  no  assurance  that  the  infrastructure  or
complementary  products  necessary  to  make  the  Internet  a viable commercial
network  will  continue  to be developed. In addition, there can be no assurance
that IP networks will retain their


                                       6



current  volume, distance and time-of-day-independent pricing structure, or that
the  costs of access to IP networks, lack of capacity or poor voice transmission
quality  of  IP  networks  will  not  adversely affect the market for IP network
products  and  services. Moreover, critical issues concerning the commercial use
of  the  Internet (including security, reliability, cost, ease of use and access
and  quality  of  service)  remain  unresolved  and  may affect the growth of IP
network  use.  There  can be no assurance that the Internet will be able to meet
additional  demand  or  its users' changing requirements on a timely basis, at a
commercially reasonable cost, or at all.

     The  Vocal'Net  gateway  can  be  vulnerable to computer viruses or similar
disruptive  problems. Computer viruses or problems caused by third parties could
lead  to  interruptions,  delays or cessation of service. Further, inappropriate
use  of  the  Internet  or  other IP networks by third parties could potentially
jeopardize  the  security  of  confidential  information, such as credit card or
bank  account  information  or the content of conversations over the IP network,
which  may deter certain persons from ordering and using the Company's products.
Until  more  comprehensive security technologies are developed, the security and
privacy  concerns  of  existing and potential users may inhibit the growth of IP
networks  in  general  and  the  market for the Company's IP network products in
particular.


Development and Maintenance of Inter-Tel.net Network

     The  Company is currently utilizing its Vocal'Net technology to develop and
expand  its  own  IP  network,  Inter-Tel.net,  to  carry telephone traffic. The
Inter-Tel.net  network  is in its initial stages of deployment and, accordingly,
is  subject  to  a  high  degree of risk. To date, the Inter-Tel.net network has
established  points of presence in the San Francisco Bay Area, Washington, D.C.,
Chicago,  New  York,  Phoenix  and  Los  Angeles.  If  the market for IP network
products  fails to develop or develops more slowly than the Company anticipates,
the  Company's  Inter-Tel.net  network  could  become  financially burdensome to
maintain  or obsolete, either of which could materially and adversely affect the
Company's business, financial condition and results of operations.

     The  Company  is  dependent  on third-party suppliers of telecommunications
and  Internet  network transmission services for implementation of Inter-Tel.net
and  does  not  currently  have  long-term  contracts  with  such suppliers. The
Company's  ability  to  expand  Inter-Tel.net  is  dependent upon its ability to
obtain  services from such suppliers. Certain of these third party suppliers are
or  may  become competitors of the Company, and such suppliers generally are not
subject  to  restrictions upon their ability to compete with the Company. To the
extent  that  any  of  these suppliers raise their rates or change their pricing
structure,  the  Company may be materially adversely affected. Also, the Company
faces  the risk that there will be a disruption in the service provided by these
suppliers,  and  can  give  no  assurance  that  there will not be a significant
disruption  in  such  service in the future, thereby causing a disruption in the
services provided by the Company to its customers.

     Moreover,  although  the  Company  has  devoted, and intends to continue to
devote,  substantial resources to improve the quality of telephone conversations
using  Vocal'Net  and  the Inter-Tel.net network, there can be no assurance that
the  problems  of voice communications over the Inter-Tel.net network that exist
today,  including  delays  in  the transmission of speech, loss of voice packets
and  sound  quality  inferior  to  that  of standard telephony networks, will be
eliminated  or  reduced. In the event that the Company is unable to improve upon
the  sound  quality  and  other  limitations  of  voice  communications over the
Inter-Tel.net  network  and  to  offer  such  improvements to its customers on a
cost-effective  basis,  the  Inter-Tel.net  network could fail to achieve market
acceptance,  and  the  Company's  business,  financial  condition and results of
operations could be materially and adversely affected.


Highly Competitive Industry

     The  market  for the Company's products is highly competitive and in recent
periods   has   been   characterized   by   pricing   pressures   and   business
consolidations.  The  Company's  competitors  include  Lucent Technologies, Inc.
("Lucent")   and  Northern  Telecom  Limited  ("NorTel"),  as  well  as  Comdial
Corporation  ("Comdial"),  EXECUTONE  Information  Systems,  Inc. ("Executone"),
Iwatsu America, Inc.


                                       7



("Iwatsu"),  Mitel  Corporation  ("Mitel"),  NEC  Corporation  ("NEC"),  Nitsuko
Corporation    ("Nitsuko"),    Matsushita    Electric   Industrial   Co.,   Ltd.
("Panasonic"),  Siemens  Rolm Communications, Inc. ("Siemens"), Toshiba America,
Inc.  ("Toshiba")  and  others.  Many  of  these  competitors have significantly
greater  financial,  marketing  and  technical  resources  than the Company. The
Company  also  competes against the regional Bell operating companies ("RBOCs"),
which  offer  systems  produced by one or more of the aforementioned competitors
and  also  offer  Centrex  systems  in  which  automatic  calling facilities are
provided through equipment located in the telephone company's central office.

     The  Telecommunications Act of 1996 (the "Telecommunications Act") and AT&T
Corporation's  ("AT&T") announcement to divide itself into three enterprises has
had   an   impact   on   competition   in   the   communications  industry.  The
Telecommunications  Act  opened  the  market  for telephone and cable television
services,  forcing telephone companies to open their networks to competitors and
giving  consumers  a  choice  of  local  phone carriers. Conversely, local phone
companies  are  now  able  to  offer  long distance services. In addition, cable
television  companies  can  offer  telephone services and Internet access. These
changes  have  increased  competition  in  the  communications industry and have
created  additional competition and opportunities in customer premise equipment,
as these new services and interfaces have become available.

     In  the market for voice processing applications, including voice mail, the
Company  competes  against  Applied Voice Technology, Inc. ("AVT"), Active Voice
Corporation    ("Active    Voice"),    Centigram    Communications   Corporation
("Centigram"),   Lucent   and   other   competitors,   certain   of  which  have
significantly  greater  resources  than  the  Company.  In  the  market for long
distance   services,  the  Company  competes  against  AT&T,  MCI  Communication
Corporation,  Sprint  Corporation  and  other  competitors,  many  of which have
significantly  greater  resources  than the Company. The Company also expects to
compete  with  RBOCs,  cable  television companies, satellite and other wireless
broadband  service  providers  and  others  for  long distance business as those
companies  gradually  respond  to  the  Telecommunications  Act. Key competitive
factors  in  the  sale  of  telephone  systems  and related applications include
price,   performance,   features,   reliability,   service   and  support,  name
recognition  and  distribution capability. The Company believes that it competes
favorably  in its markets with respect to the price, performance and features of
its  systems,  as  well  as  the  level  of service and support that the Company
provides   to   its   customers.  Certain  of  the  Company's  competitors  have
significantly  greater  name  recognition and distribution capabilities than the
Company.  The  Company  expects  that competition will continue to be intense in
the  markets  addressed  by  the Company, and there can be no assurance that the
Company will be able to continue to compete successfully.

     In  the  market  for  IP  telephony  products, the Company competes against
existing  IP  telephony  gateway providers such as Lucent, NetSpeak Corporation,
VocalTec  Communications Ltd., Vienna Systems Corporation and others. Several of
these  competitors  have  been  active  in developing and marketing IP telephony
products  for  a  greater  period  of  time  than  the  Company and have already
established  relationships  with customers within their market. In addition, the
Company  could  face significant competition from vendors such as Cisco Systems,
Inc.,   Bay   Networks,   Inc.,  3Com  Corporation,  Motorola,  Inc.  and  MICOM
Communications  Corp.,  should such established data vendors choose to enter the
market  for  IP  telephony  products.  Such companies currently produce products
that,  if  equipped  with  voice  capabilities,  could  represent a considerable
threat  to  the  Company  within that market. Moreover, should the market for IP
telephony  products  become  fully  developed  or develop at a rapid rate, large
companies   such   as   IBM   Corporation   ("IBM")  and  Microsoft  Corporation
("Microsoft")   could   choose  to  develop  proprietary  software  designed  to
facilitate voice communication over an IP network.

     As  the  Company  enters  the  markets  for  local telephone service and IP
network  access,  it  will  face  additional  competition  from  RBOCs and other
providers,  which  have  larger marketing and sales organizations, significantly
greater  financial  and  technical  resources  and a larger and more established
customer  base  than  the  Company.  In addition, RBOCs and other providers have
greater  name  recognition,  more  established  positions in the market and long
standing  relationships  with  customers.  Therefore,  there can be no assurance
that the Company will compete successfully in these markets.


                                       8



     Many  of  the  Company's  current  and  potential  competitors  have longer
operating  histories,  are  substantially  larger,  and  have greater financial,
manufacturing,  marketing,  technical  and  other  resources. A number also have
greater  name  recognition  and  a  larger  installed  base of products than the
Company.  Competition  in  the Company's markets may result in significant price
reductions.  As  a result of their greater resources, many current and potential
competitors  may  be  better  able  than  the  Company to initiate and withstand
significant  price  competition  or  downturns  in  the economy. There can be no
assurance  that the Company will be able to continue to compete effectively, and
any  failure  to  do  so  would  have a material adverse effect on the Company's
business, financial condition and operating results.


Management of Growth; Implementation of New Management Information Systems

     The  growth  in  the  Company's  business  has  placed,  and is expected to
continue  to  place, a significant strain on the Company's personnel, management
and  other  resources.  The  Company's  ability  to  manage  any  future  growth
effectively  will  require  it  to  attract,  train,  motivate  and  manage  new
employees  successfully,  to integrate new employees into its overall operations
and   to   continue   to  improve  its  operational,  financial  and  management
information systems.

     The  Company  implemented  a  new  MIS  system late in 1995. The MIS system
significantly  affected  many  aspects  of the Company's business, including its
accounting,  operations,  purchasing,  sales  and marketing functions. Following
the  date of implementation, the Company experienced difficulty with the new MIS
software,  which  increased  the  Company's  costs, had an adverse effect on the
Company's  ability to provide products and services to its customers on a timely
basis  and  caused  delays  in  coordinating  accounting  and financial results.
During  the  fourth quarter of 1996, the Company determined that the limitations
of  the  existing  system  software would prevent Inter-Tel from establishing an
integrated  and  centralized dispatch and telemarketing center. As a result, the
Company  signed  an  agreement  with  a large, established software and database
vendor  to replace its existing MIS software and implement, maintain and support
alternate  MIS  software  to  be  utilized  throughout the Company. Accordingly,
during  the  fourth  quarter of 1996, the Company wrote off the software license
and implementation costs relating to the system software being replaced.

     The  actions  to  replace the MIS software could result in additional costs
and  delays  associated  with obtaining a fully functional MIS system, including
but  not  limited to the costs of procuring additional or alternate hardware and
software  required  but  not  available in the current system configuration, and
additional  personnel.  Any  such  cost  or  delay could have a material adverse
effect  on the Company's business, financial condition and operating results. In
addition,  implementation  of  this  system software and the transition from the
current  system  software  to  the  new information system software will require
substantial financial resources, time and personnel.

     The  Company  has  made  strategic  acquisitions in the past and expects to
continue  to  do  so in the future. Acquisitions require a significant amount of
the  Company's management attention and financial and operational resources, all
of  which  are  limited. The integration of acquired entities may also result in
unexpected  costs  and  disruptions  and significant fluctuations in, or reduced
predictability  of,  operating  results  from  period to period. There can be no
assurance   that   an   acquisition  will  not  adversely  affect  the  business
relationships  of  the  Company  or  the  acquired  entity  with  its respective
suppliers  or  customers.  Further,  there  can be no assurance that the Company
will  be  able  to successfully integrate any acquired operations or achieve any
of  the intended benefits of an acquisition. The Company's failure to manage its
growth  effectively  could  have  a  material  adverse  effect  on its business,
financial condition and operating results.


Dependence Upon Contract Manufacturers and Component Suppliers

     The  Company  currently  procures  certain  components  used in its digital
communication   platforms,   including   certain   microprocessors,   integrated
circuits,  power  supplies,  voice  processing  interface cards and IP telephony
cards  from  a  single  source  or  limited  sources of supply and, accordingly,
product  availability  could be limited. As the Company deploys its IP telephony
products  and  the  Inter-Tel.net  network,  the Company expects that it will be
required to increasingly rely upon third party software and hardware


                                       9



suppliers.  The  Company  currently  manufactures its products through a limited
number  of  contract manufacturers located in the United States, the Philippines
and  the  People's  Republic  of  China.  Foreign  manufacturing  facilities are
subject  to  changes  in governmental policies, imposition of tariffs and import
restrictions  and other factors beyond the Company's control. Varian Associates,
Inc.  ("Varian")  currently  manufactures a significant portion of the Company's
products  at  Varian's  Tempe,  Arizona facility, including substantially all of
the  printed  circuit  boards  used  in  the AXXESS and Inter-Tel Axxent digital
communication  platforms.  From time to time, the Company has experienced delays
in  the  supply  of components and finished goods, and there can be no assurance
that  the  Company  will not experience such delays in the future. The Company's
reliance  on  third  party  manufacturers involves a number of additional risks,
including  reduced control over delivery schedules, quality assurance and costs.
Any  delay  in  delivery  or  shortage of supply of components or finished goods
from  Varian  or  any other supplier, or the Company's inability to develop in a
timely  manner  alternative  or  additional  sources if and when required, could
damage  the  Company's  relationships with current and prospective customers and
could   materially  and  adversely  affect  the  Company's  business,  financial
condition  and  operating  results. The Company has no long term agreements with
its  suppliers  that  require  such  suppliers  to  provide  fixed quantities of
components  or  finished goods at set prices. There can be no assurance that the
Company  will  be  able  to  continue  to obtain components or finished goods in
sufficient  quantities  or quality or on favorable pricing and delivery terms in
the future.

Product Protection and Infringement

     The  Company's  future  success  will  depend in part upon its  proprietary
technology.  Although the Company has applied to the U.S.  Patent and  Trademark
Office for a patent related to certain aspects of the Vocal'Net technology,  the
Company currently has no issued patents and relies  principally on copyright and
trade  secret  law  and  contractual  provisions  to  protect  its  intellectual
property.  There can be no  assurance  that any patent,  trademark  or copyright
owned by the Company will not be invalidated, circumvented or challenged or that
the  rights  granted  thereunder  will  provide  meaningful  protection  or  any
commercial  competitive  advantage  to the  Company.  Further,  there  can be no
assurance that others will not develop technologies that are similar or superior
to the Company's technology or that duplicate the Company's  technology.  As the
Company expands its international  operations,  effective  intellectual property
protection may be unavailable or limited in certain foreign countries. There can
be  no   assurance   that  the  steps   taken  by  the  Company   will   prevent
misappropriation of its technology. Litigation may be necessary in the future to
enforce the Company's  intellectual  property  rights,  to protect the Company's
trade secrets,  to determine the validity and scope of the proprietary rights of
others,  or to  defend  against  claims  of  infringement  or  invalidity.  Such
litigation  could result in  substantial  costs and  diversion of resources  and
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and operating results.

     From  time  to  time,  the  Company  is  subject  to  proceedings  alleging
infringement  by  the  Company of intellectual property rights of others. If any
such  claim  is  asserted  against the Company, the Company may seek to obtain a
license  under  the  third party's intellectual property rights. There can be no
assurance  that  a  license will be available on terms acceptable to the Company
or  at  all.  In  the  alternative,  the  Company  could resort to litigation to
challenge  any  such  claim.  Any  such  litigation could require the Company to
expend  significant  sums, divert management's attention and require the Company
to  pay  significant  damages,  develop  non-infringing  technology  or  acquire
licenses  to  the  technology which is the subject of the asserted infringement,
any  of  which  could  have a material adverse effect on the Company's business,
financial  condition  and  operating  results.  In the event that the Company is
unable  or  chooses  not  to license such technology or decides not to challenge
such  third  party's  rights, the Company could encounter substantial and costly
delays  in  product  introductions  while attempting to design around such third
party  rights,  or  could  find  that  the  development,  manufacture or sale of
products requiring such licenses could be foreclosed.
 

                                       10



Reliance on Dealer Network

     A  substantial  portion  of  the  Company's  net sales are made through its
network  of  independent  dealers.  The  Company  faces intense competition from
other  telephone  system  and  voice  processing  system  manufacturers for such
dealers'  business,  as  most  of  the  Company's  dealers  carry products which
compete  with  the  Company's  products. The Company has no exclusive agreements
with  any  of  its  dealers.  The  loss  of  any  significant dealer or group of
dealers,  or  any  event  or  condition adversely affecting the Company's dealer
network,  could  have  a  material  adverse  effect  on  the Company's business,
financial condition and operating results.


Dependence on Key Personnel

     The  Company  is  dependent on the continued service of, and its ability to
attract  and  retain,  qualified  technical,  marketing,  sales  and  managerial
personnel.  The  competition  for such personnel is intense, and the loss of any
of  such persons, as well as the failure to recruit additional key technical and
sales  personnel in a timely manner, would have a material adverse effect on the
Company's  business  and  operating  results. There can be no assurance that the
Company  will  be able to continue to attract and retain the qualified personnel
necessary for the development of its business.


Risks of Providing Long Distance and Network Services

     Inter-Tel  depends  on  its  supply  of  telecommunications   services  and
information  from  several  long  distance  carriers.  Because  it does  not own
transmission facilities, the Company relies on long distance carriers to provide
network services to the Company's  customers and for billing  information.  Long
distance services are subject to extensive and uncertain governmental regulation
on both  the  federal  and  state  level.  There  can be no  assurance  that the
promulgation of certain regulations will not materially and adversely affect the
Company's business,  financial  condition and operating results.  Contracts with
the long distance  carriers from which the Company  currently  resells  services
typically  have a one year term in which the  Company's  prices  are  relatively
fixed and have minimum use  requirements.  The market for long distance services
is  currently   experiencing  and  is  expected  to  experience  in  the  future
significant price competition, resulting in decreasing end-user rates. There can
be no assurance that the Company will meet minimum use commitments, will be able
to negotiate  lower rates with carriers in the event of any decrease in end user
rates or will be able to extend its  contracts  with long  distance  carriers at
prices favorable to the Company. The Company's ability to continue to expand its
long distance  services  depends upon its ability to continue to secure reliable
long  distance  services  from a  number  of  long  distance  carriers  and  the
willingness of such carriers to continue to provide telecommunications  services
and billing information to the Company on favorable terms.


Potential Fluctuations In Quarterly Results; Limited Backlog

     The  Company's  quarterly  operating  results  depend  upon  a  variety  of
factors,  including the volume and timing of orders received during the quarter,
the  mix  of  products  sold,  mix  of  distribution  channels, general economic
conditions,  patterns  of  capital  spending  by  customers,  the  timing of new
product  announcements  and releases by the Company and its competitors, pricing
pressures,  the  cost  and effect of acquisitions, and the availability and cost
of   products  and  components  from  the  Company's  suppliers.  The  Company's
customers  typically  require  immediate  shipment and installation of platforms
and  software.  As  a  result,  the  Company  has  historically  operated with a
relatively  small  backlog,  and  sales and operating results in any quarter are
principally   dependent   on   orders   booked  and  shipped  in  that  quarter.
Historically,  a  substantial  portion  of  the  Company's  net sales in a given
quarter  have  been  recorded  in  the  third  month  of  the  quarter,  with  a
concentration  of  such  net  sales in the last two weeks of the quarter. Market
demand  for  investment  in  capital  equipment  such  as  digital communication
platforms   and   associated  call  processing  and  voice  processing  software
applications  is  largely dependent on general economic conditions, and can vary
significantly  as a result of changing conditions in the economy as a whole. The
Company's  expense levels are based in part on expectations of future sales and,
if  sales  levels do not meet expectations, operating results could be adversely
affected.   Because   sales  of  digital  communication  platforms  through  the
Company's dealers produce lower gross margins than sales through the Company's


                                       11



direct  sales  organization, operating results have varied, and will continue to
vary  based upon the mix of sales through direct and indirect channels. Although
the  Company  to  date  has  been  able to resell the rental streams from leases
under  its  Totalease  program  profitably and on a substantially current basis,
the  timing  and  profitability  of  lease resales from quarter to quarter could
impact   operating  results,  particularly  in  an  environment  of  fluctuating
interest  rates.  Long  distance  sales, which have lower gross margins than the
Company's  core business, have grown in recent periods at a faster rate than the
Company's  overall  net  sales.  As  a  result, gross margins could be adversely
affected  in  the event that long distance calling services continue to increase
as  a  percentage  of  net  sales.  In  addition,  the  Company  is  subject  to
seasonality  in  its  operating  results,  as  net sales for the first and third
quarters  are  frequently  less than those experienced, in the fourth and second
quarters,  respectively. As a result of these and other factors, the Company has
in  the  past  experienced,  and could in the future experience, fluctuations in
sales  and  operating results on a quarterly basis. See "Management's Discussion
and Analysis of Financial Condition and Results of Operations."


Volatility of Stock Price

     The  market  price for the Company's Common Stock has been highly volatile.
The  Company  believes  that  factors  such  as  announcements  of  developments
relating  to  the  Company's  business,  fluctuations in the Company's operating
results,  shortfalls  in  revenue  or  earnings relative to securities analysts'
expectations,  announcements  of  technological  innovations  or new products or
enhancements  by  the  Company  or  its  competitors,  general conditions in the
telecommunications  industry or the worldwide economy, changes in legislation or
regulation   affecting   the   telecommunications   industry,   an  outbreak  of
hostilities,  developments  in  intellectual property rights and developments in
the  Company's  relationships  with  its customers and suppliers could cause the
price  of  the  Company's Common Stock to fluctuate, perhaps substantially. Many
of  such  factors are beyond the Company's control. In addition, in recent years
the  stock  market in general, and the market for shares of technology stocks in
particular,  have  experienced extreme price fluctuations, which have often been
unrelated  to  the  operating performance of affected companies. There can be no
assurance  that  the  market  price  of  the  Company's  Common  Stock  will not
experience  significant  fluctuations in the future, including fluctuations that
are unrelated to the Company's performance.


Year 2000 Compliance

     Many  currently  installed computer systems and software products are coded
to  accept  only two digit entries in the date code field. Beginning in the year
2000,  these  date  code  fields  will  need  to  accept  four  digit entries to
distinguish  21st  century  dates  from 20th century dates. As a result, in less
than  three  years,  computer systems and/or software used by many companies may
need  to  be  upgraded to comply with such "Year 2000" requirements. Significant
uncertainty  exists  in  the  software industry concerning the potential effects
associated  with such compliance. Although the Company currently offers software
products  that are designed to be Year 2000 compliant, there can be no assurance
that the Company's software products contain all necessary date code changes.

     The  Company  believes  that  the  purchasing  patterns  of  customers  and
potential  customers  may  be affected by Year 2000 issues in a variety of ways.
Many  companies  are  expending  significant resources to correct or patch their
current  software  systems  for  Year  2000  compliance.  These expenditures may
result  in  reduced  funds available to purchase software products such as those
offered  by  the  Company.  Many  potential  customers  may also choose to defer
purchasing  Year  2000  compliant  products  until they believe it is absolutely
necessary,  thus  resulting  in  potentially  stalled  market  sales  within the
industry.  Conversely,  Year 2000 issues may cause other companies to accelerate
purchases,  thereby  causing  an  increase in short-term demand and a consequent
decrease  in  long-term  demand  for  software products. Additionally, Year 2000
issues  could  cause  a  significant  number  of  companies,  including existing
customers  of  the Company, to reevaluate their current communications platform,
IP  network  telephony  or  voice  processing  software  needs,  and as a result
consider  switching  to  other  systems  or  suppliers.  


                                       12



Any of the foregoing could result in a material  adverse effect on the Company's
business, financial condition and operating results.


Concentration of Ownership

     As  of September 30, 1997, Steven G. Mihaylo, the Company's Chairman of the
Board  of Directors and Chief Executive Officer beneficially owned approximately
23.4%  of  the  outstanding  shares of the Common Stock. As a result, he has the
ability  to  exercise  significant  influence over matters requiring shareholder
approval.  In  addition, the concentration of ownership could have the effect of
delaying or preventing a change in control of the Company.


                                       13



                                USE OF PROCEEDS

     The net  proceeds  from the sale of the  3,000,000  shares of Common  Stock
offered by the Company  hereby are  estimated to be $68.8  million,  based on an
assumed public  offering  price of $24.375 per share and after  deduction of the
estimated  underwriting  discount and offering expenses.  The Company intends to
use a portion of the net  proceeds  of this  offering  to develop and expand its
Inter-Tel.net  network.  The Company may use another portion of the net proceeds
to finance  acquisitions of additional  resellers of telephony  products,  other
strategic  acquisitions  or  corporate  alliances.  The Company  considers  such
acquisitions  on an  ongoing  basis  but  has no  current  commitments  for  any
acquisition  which  would have a  material  impact on the  Company's  results of
operations or financial condition. The Company intends to use the balance of the
net proceeds primarily for working capital and other general corporate purposes.
Pending such uses, the Company will invest the net proceeds in investment  grade
short or medium term income producing investments.  The Company will not receive
any proceeds from the sale of shares by the Selling Shareholders.


                                DIVIDEND POLICY

     On  September  24,  1997,  the Company's Board of Directors declared a cash
dividend  (the  "Cash  Dividend")  of  $0.01  for  every  share of Common Stock,
payable  to  shareholders  of  record  as  of  December  31, 1997, with dividend
payments  to  commence on or about January 15, 1997. Prior to the Cash Dividend,
the   Company  had  declared  no  cash  dividends  on  its  Common  Stock  since
incorporation.


                                       14



                          PRICE RANGE OF COMMON STOCK

     The  Company's  Common  Stock is traded on the Nasdaq National Market under
the  symbol  INTL.  The  following  table sets forth, for the periods indicated,
high  and  low  sale  prices  for  the  Common  Stock  as reported on the Nasdaq
National Market.


                                                                 High       Low
                                                               --------   -------
                                                                    
         1995
          First Quarter    .................................    $ 6.50    $3.44
          Second Quarter   .................................      8.06     5.78
          Third Quarter    .................................      9.88     7.44
          Fourth Quarter   .................................      8.69     6.94
         1996
          First Quarter    .................................      9.25     5.69
          Second Quarter   .................................     14.19     8.75
          Third Quarter    .................................     13.31     8.00
          Fourth Quarter   .................................     12.25     6.00
         1997
          First Quarter    .................................      9.75     5.69
          Second Quarter   .................................     11.00     4.75
          Third Quarter    .................................     26.75     9.88
          Fourth Quarter (through October 29, 1997)   ......     32.38    18.50


     On  October  29,  1997, the last reported sale price of the Common Stock on
the  Nasdaq  National  Market was $24.375 per share. As of October 22, 1997, the
Company had approximately 590 holders of record of its Common Stock.


                                       15



                                CAPITALIZATION

     The  following  table  sets forth the short-term debt and capitalization of
the  Company  at  September  30,  1997  and  as  adjusted  to give effect to the
issuance  and  sale  by  the Company of 3,000,000 shares of Common Stock offered
hereby  at an assumed public offering price of $24.375 per share and the receipt
of the estimated net proceeds therefrom.


                                                                      September 30, 1997
                                                                  ---------------------------
                                                                     Actual       As Adjusted
                                                                  ------------   ------------
                                                                        (in thousands)
                                                                           
Short-term debt   .............................................    $     --       $    --
                                                                   =========      ========
Long-term debt    .............................................    $     --       $    --

Shareholders' equity:
 Common Stock, no par value, 30,000,000 shares authorized,
   actual, 100,000,000 shares authorized, as adjusted;
   23,553,942 shares issued and outstanding, actual, 26,553,942
   shares issued and outstanding, as adjusted(1)   ............       60,473       106,185
 Retained earnings   ..........................................       42,441        42,441
 Equity adjustment for foreign currency translation   .........         (314)         (314)
                                                                   ---------      --------
                                                                     102,600       148,312
 Less treasury stock at cost  .................................      (23,057)          --
                                                                   ---------      --------
   Total shareholders' equity    ..............................       79,543       148,312
                                                                   ---------      --------
    Total capitalization   ....................................    $  79,543      $148,312
                                                                   =========      ========
<FN>
- ------------
(1) As  adjusted  authorized shares reflect the approval of the amendment of the
    Company's  articles  of  incorporation  as  of November 12, 1997 to increase
    the  authorized  number  of  shares  of  Common  Stock  from  30,000,000  to
    100,000,000.  Shares  issued  and  outstanding  exclude (i) 3,018,150 shares
    reserved  for  issuance  upon  exercise of stock options as of September 30,
    1997  and  (ii)  1,994,776  additional  shares  reserved for future issuance
    pursuant to the Company's stock option and employee stock purchase plans.
</FN>



                                       16



                     SELECTED CONSOLIDATED FINANCIAL DATA

     The following table summarizes certain selected consolidated financial data
of the Company and its subsidiaries. The selected consolidated financial data as
of  December  31,  1995 and 1996 and for each of the three  years in the  period
ended December 31, 1996 are derived from consolidated  financial statements that
have  been  audited  by  Ernst & Young  LLP,  independent  auditors,  which  are
incorporated  by  reference  in  this  Prospectus.   The  selected  consolidated
financial  data as of December 31,  1992,  1993 and 1994 and for each of the two
years in the period  ended  December  31,  1993 are  derived  from  consolidated
financial  statements  that have been audited by Ernst & Young LLP,  independent
auditors,   which  are  not  included  or  incorporated  by  reference  in  this
Prospectus.  The selected consolidated financial data for the nine month periods
ended  September 30, 1996 and 1997 and as of September 30, 1997 are derived from
unaudited  consolidated financial statements which are incorporated by reference
into this Prospectus.  The unaudited  consolidated  financial statements include
all  adjustments,  consisting of normal  recurring  accruals,  which the Company
considers  necessary for a fair  presentation of the financial  position and the
results of operations for these periods. Operating results for nine months ended
September  30, 1997 are not  necessarily  indicative  of the results that may be
expected  for the entire  fiscal  year  ending  December  31, 1997 or for future
periods.  The  data  presented  below  should  be read in  conjunction  with the
Consolidated   Financial  Statements  and  Notes  thereto  and  other  financial
information incorporated by reference into this Prospectus.


                                                                                                            Nine Months
                                                         Year Ended December 31,                        Ended September 30,
                                   ------------------------------------------------------------------- ----------------------
                                     1992       1993        1994           1995             1996          1996        1997
                                   --------- ----------- ----------- ---------------- ---------------- ----------- ----------
                                                             (in thousands, except per share data)
                                                                                               
Statement of Operations Data:
 Net sales   .....................  $88,120   $ 103,373   $ 123,878  $   150,533      $   185,884       $ 133,384   $ 162,061
 Cost of sales  ..................   54,031      63,088      74,033       87,696          104,966          75,348      89,191
                                    --------  ----------  ---------- -----------      -----------       ----------  ----------
 Gross profit   ..................   34,089      40,285      49,845       62,837           80,918          58,036      72,870
 Research and development   ......    3,928       4,114       4,537        5,764            6,581           4,933       5,852
 Selling, general and 
  administrative .................   25,040      29,682      36,502       43,578           56,386          40,233      51,035
 Special charge    ...............      --          --          --         1,315 (1)        4,542 (2)         --          --
                                    --------  ----------  ---------- -----------      -----------       ----------  ----------
 Operating income  ...............    5,121       6,489       8,806       12,180 (1)       13,409 (2)      12,870      15,983
 Interest and other income  ......      680         282         904        1,674            1,974           1,356         924
 Interest expense  ...............      736         449         122          106               77              43          37
 Income taxes   ..................    1,901       2,381       3,648        5,249            6,264           5,811       6,798
                                    --------  ----------  ---------- -----------      -----------       ----------  ----------
 Net income     ..................  $ 3,164   $   3,941   $   5,940  $     8,499 (1)  $     9,042 (2)   $   8,372   $  10,072
                                    ========  ==========  ========== ===========      ===========       ==========  ==========
 Net income per share(3):
  Primary    .....................  $  0.18   $    0.22   $    0.27  $      0.35 (1)  $      0.34 (2)   $    0.31   $    0.39
                                    ========  ==========  ========== ===========      ===========       ==========  ==========
  Fully diluted    ...............  $  0.18   $    0.22   $    0.27  $      0.35 (1)  $      0.34 (2)   $    0.31   $    0.37
                                    ========  ==========  ========== ===========      ===========       ==========  ==========
 Weighted average shares and
  share equivalents(3):
  Primary    .....................   17,320      18,060      21,800       24,002           26,790          26,720      26,035
  Fully diluted    ...............   17,320      18,132      21,800       24,048           26,794          26,796      27,155





                                                          December 31,
                                 --------------------------------------------------------------   September 30,
                                    1992         1993         1994         1995         1996           1997
                                 ----------   ----------   ----------   ----------   ----------   --------------
                                                                 (in thousands)
                                                                                
Balance Sheet Data:
 Working capital  ............    $ 12,484     $ 34,244     $ 37,220     $ 75,623     $ 79,709       $ 62,206
 Total assets  ...............      37,838       57,467       67,748      118,767      132,611       125,282
 Shareholders' equity   ......      19,375       38,605       45,122       85,117       94,934        79,543
<FN>
- ------------
(1) Operating  income  in  the  year  ended December 31, 1995 includes a special
    charge  of  $1,315,000,  which  reduced net income by $815,000, or $0.03 per
    share  after  tax.  This  special  charge reflects the costs associated with
    integrating  the  operations  of  American Telcom Corp. of Georgia, Inc. and
    Access  West,  Inc.  Without  this  special  charge,  the Company would have
    reported  operating  income of approximately $13.5 million and net income of
    approximately $9.3 million, or $0.39 per share, for such period.

(2) Operating  income  in  the  year  ended December 31, 1996 includes a special
    charge  of  $4,542,000, which reduced net income by $2,725,000, or $0.10 per
    share  after  tax.  This special charge reflects the decision by the Company
    to  replace  its  MIS  software.  Without  this  special charge, the Company
    would  have  reported  operating  income  of approximately $18.0 million and
    net  income  of  approximately  $11.8  million, or $0.44 per share, for such
    period.

(3) Financial  data  for  all  periods  have  been restated to reflect the Stock
    Split.
</FN>


                                       17



                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS


     This  Management's  Discussion  and  Analysis  of  Financial  Condition and
Results   of   Operations   and   other   parts   of   this  Prospectus  contain
forward-looking  statements  that  involve  risks  and  uncertainties. The words
"expects,"  "anticipates," "believes," "intends," "will" and similar expressions
identify forward-looking  statements which are based on information available to
the  Company on the date hereof, and the Company assumes no obligation to update
any  such  forward-looking statements. The Company's actual results could differ
materially  from  those  anticipated  in  these  forward-looking statements as a
result  of  certain  factors,  including  those  set forth in "Risk Factors" and
elsewhere in this Prospectus.


General

     Inter-Tel  is  a  single point of contact, full service provider of digital
business  telephone  systems,  IP  telephony  products,  CTI applications, voice
processing software and long distance calling services. Inter-Tel's    products
and   services   include  the  AXXESS  and  Inter-Tel  Axxent  digital  business
communication  platforms,  the  AXXESSORY  Talk  voice  processing platform, the
Vocal'Net  IP  telephony  gateway  and  the  Inter-Tel.net  private IP telephony
network.  The  Company  also  provides maintenance, leasing and support services
for its products.

     The  Company  has  developed  networks of direct sales offices, dealers and
VARs  that  sell  the  Company's  products.  In  recent periods, the Company has
focused  on  expanding  its  direct  sales  capabilities  and its dealer and VAR
network.  The  Company  has acquired a number of resellers of telephony products
and  integrated  these  operations  with its existing direct sales operations in
the same geographic areas and in other strategic markets.

     Sales  of systems through the Company's dealers and VARs typically generate
lower  gross margins than sales through the Company's direct sales organization,
although  direct  sales  typically require higher levels of selling, general and
administrative  expenses.  In  addition, the Company's long distance and network
services  typically  generate  lower  gross  margins  than sales of software and
system  products.  Accordingly,  the  Company's  margins may vary from period to
period  depending  upon  distribution channel and product mix. In the event that
sales  through  dealers  or  sales  of  long  distance  services  increase  as a
percentage of net sales, the Company's overall gross margin could decline.

     The   Company's  operating  results  depend  upon  a  variety  of  factors,
including  the  volume and timing of orders received during a period, the mix of
products  sold  and  mix  of distribution channels, general economic conditions,
patterns   of   capital  spending  by  customers,  the  timing  of  new  product
announcements   and  releases  by  the  Company  and  its  competitors,  pricing
pressures,  the cost and effect of acquisitions and the availability and cost of
products   and   components   from  the  Company's  suppliers.  Historically,  a
substantial  portion  of  the  Company's  net sales in a given quarter have been
recorded  in  the  third  month of the quarter, with a concentration of such net
sales  in the last two weeks of the quarter. In addition, the Company is subject
to  seasonality  in  its operating results, as net sales for the first and third
quarters  are  frequently  less  than  those  experienced  during the fourth and
second  quarters,  respectively.  See  "Risk  Factors--Potential Fluctuations in
Quarterly Results; Limited Backlog."

     The  Company offers to its customers a package of lease financing and other
services  under  the  name  Totalease.  Totalease  provides  to  customers lease
financing,  maintenance  and  support  services,  fixed price upgrades and other
benefits.  The  Company  finances  this  program  through the periodic resale of
monthly lease payments to financial institutions.


                                       18




Results of Operations

     The  following  table  sets  forth  certain  statement  of  operations data
expressed as a percentage of net sales:


                                                                                           Nine Months
                                                  Year Ended December 31,              Ended September 30,
                                          ---------------------------------------   -------------------------
                                             1994          1995          1996          1996          1997
                                          -----------   -----------   -----------   -----------   -----------
                                                                                      
Net sales   ...........................      100.0%        100.0%        100.0%        100.0%        100.0%
Cost of sales  ........................       59.8          58.3          56.5          56.5          55.0
                                           -------       -------       -------       -------       -------
Gross profit   ........................       40.2          41.7          43.5          43.5          45.0
Research and development   ............        3.6           3.8           3.5           3.7           3.6
Selling, general and administrative   .       29.5          28.9          30.3          30.2          31.5
Special charge    .....................         --           0.9           2.5            --            --
                                           -------       -------       -------       -------       -------
Operating income  .....................        7.1           8.1           7.2           9.6           9.9
Interest and other income  ............        0.7           1.1           1.1           1.0           0.5
Interest expense  .....................        0.1           0.1           0.0           0.0           0.0
Income taxes   ........................        2.9           3.5           3.4           4.3           4.2
                                           -------       -------       -------       -------       -------
Net income  ...........................        4.8%          5.6%          4.9%          6.3%          6.2%
                                           =======       =======       =======       =======       =======


 Nine  Months  Ended  September 30, 1997 Compared to Nine Months Ended September
 30, 1996

     Net  Sales. Net  sales  increased 21.5% to $162.1 million in the first nine
months  of 1996 from $133.4 million in the first nine months of 1996. Sales from
the  Company's  direct  sales  offices  and wholesale distribution accounted for
approximately  $19.6  million  of the increase. The remaining increases occurred
in network and long distance sales and other operations.

     Gross  Profit. Gross  profit  increased  to  $72.9 million, or 45.0% of net
sales,  in  the  first  nine  months of 1997 from $58.0 million, or 43.5% of net
sales,  in  the  first nine months of 1996. This increase was primarily a result
of  higher  sales,  as  a  percentage  of  total  net  sales,  of AXXESS digital
communication   platforms,   call   processing  software  and  voice  processing
software.  In addition, gross margin increased based on a percentage increase in
sales  through  the  Company's  direct  sales  offices  compared  to  its dealer
network.

     Research  and  Development. Research  and development expenses increased to
$5.9  million,  or 3.6% of net sales, in the first nine months of 1997 from $4.9
million,  or  3.7%  of net sales, for the first nine months of 1996. This dollar
increase  was  primarily  attributable  to  expenses  relating  to the continued
development  of  the  AXXESS  software  and systems, unified messaging and voice
processing  software,  Vocal'Net  and CTI applications. The Company expects that
research  and development expenses will continue to increase in absolute dollars
as  the  Company  continues to develop and enhance existing and new technologies
and products. These expenses may vary, however, as a percentage of net sales.

     Selling,  General  and  Administrative. Selling, general and administrative
expenses  increased  to $51.0 million, or 31.5% of net sales, for the first nine
months  of  1997  from  $40.2 million, or 30.2% of net sales, for the first nine
months  of 1996. This reflected increased selling, incentive, training and other
compensation  costs  attributable  to  the increased sales through the Company's
direct  sales offices, additional personnel to support the direct dealer network
and  the expansion of long distance operations, development of the Inter-Tel.net
network  and expenses associated with the expansion of international operations.
In  addition,  the  Company  increased  its  sales and technical training staff,
expanded  its  credit  management  group  and  made  increases  in  reserves for
accounts   receivable.   The   Company   expects   that   selling,  general  and
administrative  expenses  will  increase  in absolute dollars, but may vary as a
percentage of net sales.

     Interest   and   Other   Income. Interest   and   other   income  decreased
approximately  $400,000  in 1997 principally as a result of lower levels of cash
available for investment.

     Net  Income. Net  income  increased  20.3%  to  $10.1 million, or $0.39 per
share,  for  the  first  nine  months  of  1997  compared  to net income of $8.4
million, or $0.31 per share, for the first nine months of 1996.


                                       19



 Year Ended December 31, 1996 Compared to Year Ended December 31, 1995

     Net  Sales. Net sales increased 23.5% to $185.9 million in 1996 from $150.5
million  in  1995.  Sales  from direct sales offices accounted for approximately
$14.7  million  of the increase, and increased sales from wholesale distribution
accounted  for  approximately  $12.2  million  of  the  increase.  The remaining
increases occurred in long distance sales and other operations.

     Gross  Profit. Gross  profit  increased  to  $80.9 million, or 43.5% of net
sales  in 1996 from $62.8 million, or 41.7% of net sales in 1995. This reflected
the  continuing  transition  to  the  dealer network and the expansion of AXXESS
software and systems sales.

     Research  and  Development. Research  and development expenses increased to
$6.6  million,  or  3.5%  of net sales in 1996 from $5.8 million, or 3.8% of net
sales,  in  1995. These expenses in both 1996 and 1995 were directed principally
to  the  continued  development  of the AXXESS and Inter-Tel Axxent software and
systems,  unified  messaging  and  voice  processing software, Vocal'Net and CTI
applications.

     Selling,  General  and  Administrative. Selling, general and administrative
expenses  increased  to $56.4 million, or 30.3% of net sales in 1996, from $43.6
million,  or 28.9% of net sales, in 1995. This reflected increased incentive and
other  compensation,  costs  associated with the implementation of the Company's
information  systems,  additional personnel to support the direct dealer network
and  expanded  long  distance  operations,  and  expenses  associated  with  the
expansion of international operations.

     Special  Charge. During  the fourth quarter of 1996, the Company decided to
replace  its  MIS  software  with an integrated solution from a more established
vendor  and  accordingly wrote off the software license and implementation costs
relating  to  the  system software being replaced. The special pre-tax charge of
$4.5  million  ($0.10  per  share after tax), reflects the costs associated with
the  Company's  decision  to  abandon  its  current  MIS  software  in  favor of
different system software.

     Other   Income. Other   income  increased  in  1996  principally  from  the
investment  of the funds received from the August 1995 public offering and funds
generated through operating cash flow.

     Net  Income. Net income increased 6.4% to $9.0 million, or $0.34 per share,
in  1996 including the special charge recognized in the fourth quarter, compared
to  $8.5  million, or $0.35 per share, in 1995. Excluding the special charges in
both  periods, net income would have been $11.8 million, or $0.44 per share, for
1996  compared  to  $9.3  million, or $0.39 per share for 1995. In addition, net
income  per  share in 1996 was based on additional average shares outstanding in
1996,  primarily  reflecting the public offering of 4.0 million shares in August
1995.


 Year Ended December 31, 1995 Compared to Year Ended December 31, 1994

     Net  Sales. Net sales increased 21.5% to $150.5 million in 1995 from $123.9
million  in  1994.  Sales  from direct sales offices accounted for approximately
$9.5  million  of  the  increase,  with  wholesale distribution sales increasing
approximately  $11.2  million. The remaining increases occurred in long distance
sales and other operations.

     Gross  Profit. Gross  profit  increased  to  $62.8 million, or 41.7% of net
sales  in 1995 from $49.8 million, or 40.2% of net sales in 1994. This reflected
the  transition  to  the  direct  dealer  network  and  the  expansion of AXXESS
software and systems sales.

     Research  and  Development. Research  and development expenses increased to
$5.8  million,  or  3.8%  of net sales in 1995 from $4.5 million, or 3.6% of net
sales,  in  1994. These expenses in both 1995 and 1994 were directed principally
to  the  continued  development  of the AXXESS and Inter-Tel Axxent software and
systems,  unified  messaging  and voice processing software applications and CTI
applications.

     Selling,  General and Administrative.  Selling,  general and administrative
expenses  increased to $43.6 million,  or 28.9% of net sales in 1995, from $36.5
million,  or 29.5% of net sales, in 1994. This reflected increased incentive and
other compensation,  costs associated with the implementation of new information
systems,  additional personnel to support the direct dealer network and expanded
long distance  operations,  and expenses associated with expansion of operations
of the Company's Asian subsidiary.


                                       20



     Special  Charge. The  special  pre-tax  charge  of  $1.3 million ($0.03 per
share  after tax), reflects the costs associated with integrating the operations
of  American  Telcom  Corp.  of  Georgia, Inc. and Access West, Inc. The special
charge  principally  includes  costs  associated with redundancy in inventories,
equipment  abandonment,  the  combination and relocation of business operations,
employee reductions and the write-off of intangible assets.

     Other   Income. Other   income  increased  in  1995  principally  from  the
investment  of the funds received from the August 1995 public offering and funds
generated through operating cash flow.

     Net  Income. Net  income  increased  43.1%  to  $8.5  million, or $0.35 per
share,  in  1995  after  a special charge recognized in the second quarter, from
$5.9  million,  or  $0.27  per  share,  in 1994. Without the special charge, net
income  would  have  been  $9.3  million,  or  $0.39 per share, for the year. In
addition,  net  income  per share in 1995 was based on additional average shares
outstanding,  primarily  reflecting the public offering of 4.0 million shares in
August 1995.


Inflation/Currency Fluctuation

     Inflation  and  currency  fluctuations  have  not previously had a material
impact  on  Inter-Tel's  operations.  International  procurement agreements have
traditionally  been denominated in U.S. currency. Moreover, a significant amount
of  contract  manufacturing  has  been  or  is  expected to be moved to domestic
sources.  The  expansion  of  international operations in the United Kingdom and
Europe  and  increased  sales,  if  any,  in  Japan  and other parts of Asia and
elsewhere  could  result  in higher international sales as a percentage of total
revenues; however, international revenues are currently not significant.


Liquidity and Capital Resources

     At  September  30,  1997,  the  Company  had  $22.2  million  in  cash  and
equivalents,  which  represents  a  decrease of approximately $16.7 million from
December  31,  1996.  The  Company  maintains a $7.0 million unsecured revolving
line  of  credit  with  Bank  One, Arizona, NA. This credit facility is annually
renewable  and  is  available  through July 31, 1998. Under the credit facility,
the  Company has the option to borrow at a prime rate or adjusted LIBOR interest
rate.  Historically,  the  credit  facility  has  been used primarily to support
international letters of credit to suppliers.

     Net  cash  provided  by  operating activities totaled $17.6 million for the
nine  months  ended  September  30, 1997, compared to net cash used by operating
activities  of  $722,000  for  the  same  period  in  1996. The increase in cash
generated  in  1997  was  primarily the result of profitable operations plus non
cash  depreciation charges and a slightly improved net working capital position.
Net  working  capital  improved  principally  due  to a $5.0 million increase in
current  liabilities,  which  was  largely  offset  by  accounts  receivable and
inventory  increases  of $4.9 million due to higher revenues and operations. The
Company  continues  to  expand  its  dealer  network,  which has required and is
expected   to  continue  to  require  working  capital  for  increased  accounts
receivable and inventories.

     Net  cash  used  in  investing activities, primarily in the form of capital
expenditures,  was  $8.8  million  and  $4.6  million  for the nine months ended
September  30,  1997  and 1996, respectively. Capital expenditures and cash used
in   an   acquisition   totaled   approximately   $8.1   million  and  $825,000,
respectively,  in  the first nine months of 1997. The Company anticipates making
additional  capital expenditures during the remainder of 1997, which will relate
to  the  expansion  of  facilities, equipment and management information systems
used in operations.

     Net cash used in financing  activities  totaled  $25.6 million for the nine
months ended  September 30, 1997 compared to net cash  generated of $591,000 for
the same  period  in 1996.  During  the  second  quarter  of 1997,  the  Company
initiated  a stock  repurchase  program  under  which  the  Board  of  Directors
authorized the repurchase of up to 1,470,000 shares (on a pre-Stock Split basis)
of the Common Stock. The Company expended  approximately  $7.6 million and $25.1
million for stock  repurchases  in the third  quarter and the nine months  ended
September 30, 1997,  respectively,  which were funded primarily through existing
cash balances.  The Company  reissued shares with a cost basis of  approximately
$2.1  million  and $4.1  million  in the third  quarter  and nine  months  ended
September 30, 1997, respectively,


                                       21



relating  to stock option exercises and issuances. The proceeds received for the
stock  reissued  was  less  than its cost basis. Accordingly, the difference has
been recorded as a reduction to retained earnings.

     The  Company  offers  to  its customers lease financing and other services,
including  its  Totalease  program.  The  Company  funds  these programs in part
through  the  sale  to financial institutions of rental income streams under the
leases.  Resold  lease  rentals  totaling $92.0 million and $66.0 million remain
unbilled  at September 30, 1997 and December 31, 1996, respectively. The Company
is  obligated  to  repurchase  such  income  streams in the event of defaults by
lease  customers and, accordingly, maintains reserves based upon loss experience
and  past due accounts. Although the Company to date has been able to resell the
rental  streams  from  leases  under  its  lease  programs  profitably  and on a
substantially  current  basis,  the  timing  and  profitability of lease resales
could  impact  the  Company's business and operating results, particularly in an
environment  of  fluctuating  interest  rates  and  economic uncertainty. If the
Company  is  required to repurchase rental streams and realize losses thereon in
amounts  exceeding  its  reserves,  its  operating  results  will  be  adversely
affected.

     The  Company  believes  that  the  net  proceeds from this offering and its
working  capital  and  credit  facilities,  together  with  cash  generated from
operations,  will be sufficient to develop and expand its Inter-Tel.net network,
to  finance acquisitions of additional resellers of telephony products and other
strategic  acquisitions  or corporate alliances, and to provide adequate working
capital  for  at  least  the  next  twelve  months.  However, to the extent that
additional  funds  are  required  in the future to address working capital needs
and  to  provide  funding for capital expenditures, expansion of the business or
the Inter-Tel.net  network  or  additional  acquisitions,  the Company will seek
additional  financing.  There can be no assurance that additional financing will
be available when required or on acceptable terms.


Impact of Recently Issued Accounting Standards

     In  February  1997,  the  Financial Accounting Standards Board (the "FASB")
issued  SFAS  No.  128, "Earnings Per Share" ("SFAS No. 128"), which is required
to  be  adopted on December 31, 1997. At that time, the Company will be required
to  change  the  method  currently  used  to  compute  earnings per share and to
restate  all  prior  periods. Under the new requirements for calculating primary
earnings  per  share, the dilutive effect of stock options will be excluded. The
impact  is  expected  to result in an increase in primary earnings per share for
the  third  quarter ended September 30, 1997 and September 30, 1996 of $0.01 and
$0.00  per  share  respectively. The impact is expected to result in an increase
in  primary  earnings per share for the nine months ended September 30, 1997 and
September  30,  1996  of  $0.01  and $0.02 per share respectively. The impact of
SFAS  No.  128  on the calculation of fully diluted earnings per share for these
quarters is not expected to be material.

     In  June 1997, the FASB issued SFAS No. 131, "Disclosures about Segments of
an   Enterprise  and  Related  Information"  ("SFAS  No.  131").  SFAS  No.  131
establishes  standards  for  the  way  that  public  business enterprises report
information   about  operating  segments  in  annual  financial  statements  and
requires  that  those  enterprises  report  selected information about operating
segments   in   interim  financial  reports  issued  to  shareholders.  It  also
establishes  standards  for  related  disclosures  about  products and services,
geographic  areas,  and major customers. SFAS No. 131 is effective for financial
statements  for  fiscal years beginning after December 15, 1997. The adoption of
SFAS  131  will  have  no  impact  on  the  Company's  consolidated  results  of
operations, financial position or cash flows.

                                       22




                                   BUSINESS


     This  Prospectus  contains forward-looking statements within the meaning of
Section  27A  of the Securities Act and Section 21E of the Exchange Act of 1934.
Readers  are  cautioned  that  such  statements are only predictions and involve
risks  and  uncertainties.  Actual  results  could  differ materially from those
projected  in  the  forward-looking  statements  as  a result of the factors set
forth under "Risk Factors" and elsewhere in this Prospectus.

     Inter-Tel  is  a  single point of contact, full service provider of digital
business  telephone  systems.  IP  telephony  products,  CTI applications, voice
processing software and long distance calling services. Inter-Tel's    products
and   services   include  the  AXXESS  and  Inter-Tel  Axxent  digital  business
communication  platforms,  the  AXXESSORY  Talk  voice  processing platform, the
Vocal'Net  IP  telephony  gateway  and  the  Inter-Tel.net  private IP telephony
network.  The  Company  also  provides maintenance, leasing and support services
for  its  products.  Because  of  the  modular design and high level of software
content  in  the  Company's  products, including its AXXESS and Inter-Tel Axxent
systems,  customers  can  readily  increase  the size and functionality of their
systems  as  their  future telecommunications needs change. The Company believes
that  it  is  a  leading  supplier  of  small  to medium size business telephone
systems.

     The  Company  has developed a distribution network of direct sales offices,
dealers  and  VARs  which  sell  the Company's products to small and medium size
organizations  and  to  divisions or departments of larger organizations such as
Fortune 500 companies, large service organizations and governmental
agencies.  The  Company has 29 direct sales offices in the United States, one in
the  United  Kingdom, one in Japan and a network of hundreds of dealers and VARs
who  purchase  directly  from  the  Company.  The  Company  is in the process of
expanding its international dealer network.


Industry Background

     In  recent  years,   advances  in   telecommunications   technologies  have
facilitated the development of increasingly  sophisticated telephone systems and
applications.  Users rely upon a variety of applications,  including  conference
calling,  speaker  phones,  automated  attendant,  voice  processing and unified
messaging (the  integration of voice mail,  facsimile and electronic  mail),  to
improve  communications  within  their  organizations  and  with  customers  and
vendors.  Digital  technology has  facilitated  the integration of computing and
telecommunications  technologies,  which  has  made  possible  a  number  of new
applications that further enhance  productivity.  Examples of these applications
include   automatic   call   distribution   (which   provides  for  queuing  and
prioritization of incoming calls), call accounting (which permits accounting for
telephone usage and toll calls), unified messaging,  electronic data interchange
between  customers  and vendors and the use of automatic  number  identification
coupled  with  database   look-up  (where  customer   information  is  retrieved
automatically from a computerized database when the customer calls).

     The  emergence  of  high-performance,  low-cost computers and the growth of
the  Internet  and  other  digital  IP  networks  have  enabled  real-time voice
communications  to  be  transmitted  on  digital packet switched networks rather
than  over  traditional circuit switched telephone networks. This development of
voice  applications  for  the  Internet and other IP networks reflects a broader
convergence  of  standard  voice  communications  and  data networks. Because IP
network  telephony  converts all transmissions to the same type of packets, both
voice  and  data  can  use the same data circuits, thereby increasing efficiency
and  maximizing  the  use  of  available  bandwidth.  The  lowering  of  federal
regulatory  barriers to competition across traditionally distinct sectors of the
telecommunications   industry   has   opened   new  markets  for  and  increased
competitive  pressures  on  telecommunications  companies.  In response to these
factors,  telecommunications  companies  have  begun  to establish a presence in
Internet and other IP network voice communications services.

     Following   the   breakup  of  the  Bell  system  in  1984,  which  removed
restrictions  on  the  ability  of  the  RBOCs  to  purchase  telecommunications
equipment  from independent suppliers and to resell such equipment to end users,
the  market  for telecommunications systems and applications became increasingly
fragmented.   The   number   of   independent   suppliers  and  distributors  of
telecommunications equipment


                                       23



initially  increased,  but  increased  levels of competition subsequently led to
consolidation   among   suppliers   and  distributors.  In  addition,  different
telecommunications  systems  and applications were often available from only one
or  a  limited  number  of suppliers, which required businesses seeking complete
systems  to  work  with  a  number  of different suppliers. A business seeking a
telephone  system,  voice  mail  and  long  distance  services would most likely
purchase  the  products  and  services  from three separate vendors. As business
telecommunications  requirements  have  become more advanced, the integration of
different systems has become increasingly difficult.


Strategy

     Inter-Tel's  objective  is  to  continue  to  strengthen  its position as a
leading   single-source   provider  of  telecommunications  equipment,  software
applications  and  network  services.  The  Company's  strategy incorporates the
following key elements:


     Offer Total Telephony Solution

     The Company  intends to  continue  to offer a broad  range of products  and
services that incorporates  advanced  technologies and provides customers with a
single  source to fulfill  their  telecommunications  needs on a  cost-effective
basis.  Inter-Tel couples this  solution-oriented  approach with a high level of
customer  service  and  support  and a  commitment  to  quality  throughout  the
Company's  operations.  The Company's  telephone systems are integrated with the
Company's long distance calling services,  voice mail,  automated  attendant and
other telecommunications  applications,  support for interactive voice response.
Because of the  modular  design of the  Company's  systems and the high level of
software  content in its products,  customers can readily  increase the size and
functionality  of their  systems as their needs  change by adding  software  and
hardware  applications  or services or by  upgrading  to new systems or advanced
versions of existing systems.  The Company believes that its customers prefer to
purchase telecommunications  equipment and services from a single source because
of the  convenience,  consistency of service,  ease of upgrade,  availability of
financing  alternatives and confidence in the performance of integrated  systems
and services.


     Accelerate Adoption of Vocal'Net Gateway

     In  September  1997,  Inter-Tel  commercially released Vocal'Net, a gateway
for  bridging  public circuit switched telephone networks and IP packet switched
networks  such  as  the  Internet.  The  Company  intends  to  focus its initial
marketing  efforts  on  existing  customers  as  well  as  other  multi-location
companies  and  international  enterprises.  Vocal'Net  can be used to reduce an
enterprise's  communications  costs  through  more  effective  use  of  its data
network  and reduced use of traditional long distance services. In addition, the
Company  plans to pursue relationships with ISPs, long distance resellers, cable
television  companies  and  other  service  providers  that  choose to establish
alternative  networks  to compete with traditional long distance services and to
provide additional applications to their customers.


     Expand Inter-Tel.net Network

     The  Company  is  currently  developing and implementing its own private IP
telephony  network, Inter-Tel.net, to carry telephone traffic at rates typically
lower  than  those  of  standard  telephone networks. To date, the Inter-Tel.net
network  has  established  points  of  presence  in  the San Francisco Bay Area,
Washington,  D.C.,  Chicago,  New  York,  Phoenix  and  Los Angeles. The Company
intends  to  expand  the  number  of  points  of presence, both domestically and
internationally,  as well as increase capacity in existing cities. Inter-Tel.net
is  designed to carry long distance traffic originated from Inter-Tel's customer
base  and  provide  other  exchange  carriers,  individuals,  and  enterprises a
cost-effective  alternative  to  current  offerings  of the conventional circuit
switched long distance carriers.


     Continue to Develop Advanced Communications Products

     The  Company  commits  substantial  research  and  development resources in
order  to provide its customers with advanced telecommunications technologies on
a  cost-effective  basis. The Company has developed an extensive C++ library and
significant  telecommunications  expertise.  In many cases, the Company develops
new  technologies  as software upgrades or add-ons to existing products. In this
regard,

                                       24



the  AXXESS  5.0 platform, which is currently scheduled for release in the first
half  of  1998,  will  provide an extensive enhancement of AXXESS, the Company's
primary  product.  Ongoing  research and development efforts are directed to the
development  of  new  products,  applications  and  services  for  sale into the
Company's  existing customer base and to new customers. Through CTI applications
and  advanced  network  services, Inter-Tel provides technology that is designed
to   enable  its  customers  to  improve  their  efficiency  and  enhance  their
competitiveness.

     Expand Distribution Channels

     The  Company  continues  to  expand  its  distribution  channels  through a
growing  network  of  direct  dealers,  expansion  of the Company's direct sales
presence,   hiring   additional   direct  sales  personnel  and  extension  into
international  markets.  The  Company  has  established sales relationships with
hundreds  of direct dealers and continues to expand this network. The Company is
in  the process of establishing dealer networks in Japan and other parts of Asia
and  is  expanding  its  dealer  network  in  the United Kingdom and Europe. The
Company  has  expanded  its  direct  sales  activity  in  recent periods through
strategic  acquisitions of resellers of telephony products and services in areas
where  the  Company  has  existing  direct  sales  offices  and  other strategic
markets,  and  considers  additional  acquisition  opportunities  on  an ongoing
basis.  The  Company also is expanding its distribution into other channels such
as  computer  equipment  dealers, resellers of data communications equipment and
software resellers.

Products and Services

     The  Company  offers  a  broad  range  of products and services designed to
support  the  needs  of  businesses  and other organizations requiring voice and
data  communications  systems.  The  Company's  principal  products  are digital
telephone  systems  which  support  installations  up to 512 ports, IP telephony
products  and  services,  CTI applications, unified messaging software and voice
processing  software.  The  Company's  principal system sales consist of systems
supporting  10  to 300 telephones with suggested retail prices of up to $300,000
per  system,  depending  on configuration. The Company also offers long distance
calling  services,  network  design  and  implementation  services, maintenance,
leasing and support services, and resells other telecommunications products.

 Digital Communication Platforms

     Inter-Tel  offers  an  extensive  line  of  digital  communication systems,
including  hardware  platforms  and  C++  software  applications.  Because these
platforms  are  based upon open architecture and conform to established computer
and  telephone  industry  standard programming interfaces and protocols (such as
TAPI,  TSAPI  and  TCP/IP), customers can choose from a variety of either server
level or desktop applications.

     AXXESS. Inter-Tel's  primary  product,  the  AXXESS  platform, incorporates
advanced  technology for computer and telephone integration providing businesses
with  the  ability  to  customize  applications  to enhance their operations and
increase  productivity.  The  current  AXXESS  system release supports up to 512
ports  and  includes such advanced capabilities as primary rate ISDN, integrated
call  recording,  voice  prompts  in  different  languages,  and a Windows-based
attendant's  console.  The AXXESS 5.0 platform, which is currently scheduled for
release  in  the  first  half  of  1998,  is  designed  to  allow, through fully
transparent  digital  networking,  two or more systems to operate as one, and to
increase capacity to 20,000 ports.

     The system  incorporates  fully-digital  processing and transmission to the
desktop and open architecture interfaces which allow the system to be integrated
with and  controlled by attached  computers  such as PCs and  workstations.  The
system incorporates object-oriented C++ software developed by the Company, which
facilitates   upgrades  and  the   incorporation  of  additional   features  and
functionality.

     AXXESS  system  telephones incorporate user-friendly, 6-by-16 character LCD
displays  with  menu  keys  that  permit  the  user to select from multiple menu
choices  or  access additional menu screens. AXXESSORY Talk, permits push-button
selection  of  voice  processing  commands  to  appear  on  the  telephone's LCD
display,  as well as voice-prompted selections through the telephone keypad. The
AXXESS  system  is  multi-lingual,  currently offering English or Japanese voice
prompts  and  LCD  displays and allowing the user to switch from one language to
the other. Additional languages can be added in the future.


                                       25



     The  open  architecture  interface  permits  tight integration with a PC or
workstation  system  bus,  using several industry-standard interfaces to provide
efficient  access  to  voice  processing  and  other  applications  on the PC or
workstation.  Applications  include  database  look-up (which utilizes Caller-ID
information  to  retrieve customer information automatically from a computerized
database),  automated  attendant,  interactive  voice  response,  automatic call
distribution  (which queues and prioritizes incoming calls), and call accounting
(which  permits  the  monitoring  of  telephone usage and toll cost). The AXXESS
system  is managed through a Microsoft Windows-based graphical user interface on
a PC to facilitate installation, system configuration and programming.

     The AXXESS  system  utilizes  advanced  software to  configure  and utilize
real-time   digital   signal   processor   semiconductor   components   ("DSPs")
incorporated  into the system  hardware.  The use of DSPs and  related  software
lowers  system  costs,   permits  higher   functionality  and  increases  system
flexibility.  For  example,  DSPscan be  configured  by the system  manager  for
different  combinations  of  speakerphones,  conference  capabilities  and other
DSP-based  facilities.   The  system's  speakerphones   incorporate  full-duplex
technology,  which permits  speakerphones  to transmit in both directions at the
same time  without the  necessity  to override  one  speaker's  voice to prevent
feedback interference.

     The  AXXESS  software  is written in a high-level, object-oriented language
which  can  operate  on many commonly used processors. Accordingly, the software
can  be  readily ported to other hardware platforms. The Company intends to port
the  AXXESS  software  to faster microprocessors which will permit the AXXESS to
grow  to  a  much  larger  size,  in  order  to  enhance  the  functionality and
performance  of  these  larger  systems  and to permit a migration path from the
smaller AXXESS system as a customer's system requirements increase.

     Inter-Tel  Axxent.   Small  businesses  are  demanding  advanced  telephony
applications formerly reserved only for large corporations. The Inter-Tel Axxent
is designed to bring many of the  advanced  features  and  functionality  of the
AXXESS system to smaller  installations on a cost-effective basis while enabling
users to migrate to an AXXESS system as their  telecommunications  needs evolve.
The Inter-Tel  Axxent supports 24 lines and 12 trunks and provides  capabilities
such as computer telephone integration, DSP technology, real-time ACD reporting,
and integrated voice processing. Housed in a compact, PC-type mid-tower chassis,
the Inter-Tel  Axxent platform also offers the convenience of a default database
so the system is fully  operational  as soon as it is plugged in. Basic database
programming can also be performed through the digital telephone terminals.


IP Network Gateway and Inter-Tel.net Network

     Gateway  products  are  designed as transition points between two different
network  types,  such  as  between the public circuit switched telephone network
and  a packet switched IP network such as the Internet. Gateway products convert
regular  voice  transmissions to or from the compressed data packets that travel
over packetized networks.

     In  September  1997,  the  Company  released  Vocal'Net,  a  stand-alone IP
network  telephony  solution  available  for use with the AXXESS system or other
traditional  telephone systems equipped with T-1/E-1, ISDN or analog capability.
It  provides  a  gateway  for  bridging  the  telephone  network and a company's
intranet  or  the  Internet.  With  the  Vocal'Net  gateway,  users  can conduct
real-time,  two-way voice communications over the Internet and realize potential
savings  compared  to standard long distance telephone service. Designed to meet
the  needs  of  most  businesses, the Vocal'Net gateway is available in multiple
port sizes.

     Vocal'Net  does  not  require  customized  telephone  sets  or  specialized
software  or cards in each desktop computer. Further, Vocal'Net does not rely on
the   central   processing   unit   of  the  computer  for  the  compression  or
packetization  of  information,  but  instead uses high speed DSPs, enabling the
server to handle additional functions such as unified messaging.

     A  caller  can  dial  from  a  standard telephone to the Vocal'Net gateway,
which  connects  the  call from the circuit switched telephone network, converts
it  into  the  compressed,  digitized  data  packets  used by an IP network, and
routes the call via the IP network to another Vocal'Net gateway. The second


                                       26



gateway  connects  with  the  regular  telephone  system  and  dials  the  final
destination. (See illustration below.)

                               [GRAPHIC OMITTED]

     When  used  in  a  corporate  environment,  Vocal'Net  can be attached to a
T-1/E-1,  ISDN  or  analog  trunk  interface on the PBX, and the PBX's Automatic
Route   Selection   or  Least  Cost  Routing  features  will  be  programmed  to
automatically  route  calls  for  other  locations  that  have Vocal'Net Servers
through  that  trunk  interface.  When  phone  users  wish to place a call, they
simply  dial  the  desired  telephone  number  like any other call. The PBX will
route  the  call  to Vocal'Net, which converts it into the compressed, digitized
data  packets  used  by an IP network, and routes the call via the IP network to
another  Vocal'Net gateway. The second gateway connects with the far-end PBX and
dials  either  the  extension number of the desired party or accesses a trunk on
the PBX and makes a call into the switched network. (See illustration below.)

                               [GRAPHIC OMITTED]

     Because  IP  network  telephony converts all transmissions to the same type
of  packets,  both  voice  and  data  can  use  the  same data circuits, thereby
increasing   efficiency   and   maximizing   the  use  of  bandwidth.  Bandwidth
utilization  can  be  maximized to a point that some users may be able to reduce
the overall number of circuits needed.

     In  its  initial  commercial  release,  Vocal'Net  is designed to work with
business  telephone  systems  that  operate over T-1/E-1, ISDN and analog lines,
and  to  handle  up  to  24 simultaneous calls per server. Vocal'Net servers can
also  be  networked  to  operate  seamlessly  in  configurations  consisting  of
thousands   of   ports.   The   Company   is   currently  developing  additional
enhancements,  including industry standard compatibility (H.323) for integration
with  PC-based  software  applications  and other types of gateways as well as a
fax  gateway  to provide fax and broadcast fax capabilities across the Internet.
Other  planned  enhancements  to the Vocal'Net include functionality designed to
allow businesses to create virtual offices,


                                       27



enabling  traveling  or  off-site  employees  to connect to the main office from
remote    locations.    Another    planned    application   is   "Touch-To-Talk"
telephony-enabled  web  pages,  which  will allow users to press a link on a web
page  and  to  automatically  connect  over  an  IP  network to talk to customer
service agents.

     Utilizing  Vocal'Net  technology, Inter-Tel continues to develop and expand
Inter-Tel.net,  a  private  IP network designed to carry long distance telephone
traffic  at  rates  typically  lower  than  traditional long distance providers.
Inter-Tel.net  is  currently  being  used  by  the Company's employees for calls
between  Inter-Tel.net's  six  points  of  presence: the San Francisco Bay Area,
Washington  D.C.,  Chicago,  New  York,  Phoenix and Los Angeles. In its initial
commercial  release,  the Vocal'Net gateway supports calls placed from telephone
to  telephone.  Later  releases  are  planned  to  support  communications  from
telephone  to  computer,  computer  to  telephone,  computer  to  computer and a
facsimile  machine  to  facsimile  machine. See "Risk Factors--Developing Market
for   IP   Network   Telephony;   Uncertain  Regulatory  Environment,"  "--Risks
Associated  with  Vocal'Net; Dependence upon IP Network Infrastructures; Risk of
System   Failure;   Security   Risks"  and  "--Development  and  Maintenance  of
Inter-Tel.net Network."


 Computer-Telephone Integration

     Through   CTI,   the  computer  and  the  telephone  are  linked  into  one
environment.  Inter-Tel's  AXXESSORY  Connect  software  for  the  AXXESS system
enables  users  to  receive  phone  calls through their desktop PC. Using Caller
I.D.,  a  caller's information can be retrieved from the company's database even
before  the call is accepted. On an individual desktop or a company-wide network
basis,  Inter-Tel  offers a variety of products, such as AXXESSORY ACD, that can
manage  automatic  call  distribution  at  peak  efficiency  or  route  incoming
telephone  calls, based on various parameters, to a specific person. It can also
collect,  analyze  and  report  real-time  call processing information for staff
forecasting and analysis.

     Inter-Tel's  software  applications  integrate, through the use of Novell's
TSAPI  and  Microsoft's  TAPI  standard  interfaces,  with other "off-the-shelf"
Windows  applications  such  as  personal  information managers, call routing or
call  management  software  that  can  further  enhance  customer  service while
increasing  call  efficiency  and  employee  productivity.  Inter-Tel has formed
relationships  with  a  number  of  third party software developers to integrate
with  their  existing applications to create a working environment for database,
personal organizer, or terminal emulation programs.

     If  these  "off-the-shelf" applications do not adequately meet the needs of
a  customer,  the  open  design  of  Inter-Tel's  software  enables  independent
software   developers   to   write   custom   applications  through  Inter-Tel's
Developer's  Program. Alternatively, Inter-Tel's CTI Solutions Group can provide
professional   consulting   services   or  development  of  individual  customer
applications,   for   either   desktop   or  local  area  network  ("LAN")-based
applications.


 Unified Messaging and Voice Processing Software

     Inter-Tel's  unified  messaging software, Visual Mail, works in conjunction
with  a  variety  of  messaging  platforms,  including  the  Microsoft  Exchange
messaging  application,  Lotus  Notes,  Lotus  cc:Mail,  Novell's  GroupWise and
Internet  mail  applications  such  as Qualcomm's Eudora. Visual Mail integrates
all  types of messages into a single-user interface on a PC, supports both voice
mail  and  facsimile  mail  and  provides  another means for improving workplace
productivity and retrieving messages from a PC connected to a modem.

     Inter-Tel's  AXXESSORY  Talk,  Axxent  Talk and IVX500 are voice processing
platforms   that  work  with  Inter-Tel's  communication  platforms.  All  three
applications  use  the  Multi-Vendor  Interface  Protocol  ("MVIP"), an industry
standard  for  connecting multi-vendor PC-based boards in voice processing, data
switching and video systems.


 Other Services and Products

     Networking  Technologies  Integration. To  develop  a  solid foundation for
state-of-the-art  data  and  telecommunications  networking,  customers  require
strategic  network  expertise from their networking provider. Inter-Tel designs,
installs  and supports the complete integration of a customer's complex data and
telecommunications  network,  from  land-based  LANs to geographically dispersed
wide area networks ("WANs").


                                       28



     By forming  relationships with major manufacturers of hardware and software
technologies,  Inter-Tel provides the routers,  ATM, LAN and WAN switches,  file
servers,  intelligent  hubs and any other  device  required  for the  customer's
intranet  or for  usage  of  the  Internet.  Pre-sale  design  support,  project
coordination for  implementation,  and  installation  support are offered on the
full line of Inter-Tel server-based telephony products and services.

     Network and Long  Distance  Services.  The Company,  through its  Inter-Tel
NetSolutions,  Inc.  subsidiary,  resells a  variety  of long  distance  calling
services,  including  domestic and international  calling services,  800 calling
services,  dedicated services, voice and video conferencing,  customized billing
and a variety of other  telecommunication  services.  The Company  believes that
certain of its  customers  desire the  convenience  of acquiring  long  distance
calling  services through the same vendor that the customer uses to purchase its
other  telephony  equipment and  services.  The Company  currently  resells long
distance  services  pursuant to contracts with four of the six largest U.S. long
distance  carriers.  There can be no  assurance  that the Company  will meet its
minimum use commitments,  will be able to negotiate lower rates with carriers in
the  event of any  decrease  in end user  rates  or will be able to  extend  its
contracts with long distance carriers on prices favorable to the Company.

     Call  centers  using  T-1  access  for  incoming  toll-free  traffic, sales
offices   using  NetSolutions'  switched  long  distance  or  companies  linking
multiple  offices  throughout  the country on a frame relay network are examples
of the applications currently supported by Inter-Tel NetSolutions.

     Leasing  Services. The  Company  offers  its  Totalease program through its
Inter-Tel  Leasing,  Inc. subsidiary. Totalease enables an end user to acquire a
full   range   of  telephony  systems,  applications,  maintenance  and  support
services,  as  well  as  lease  financing,  from  a single vendor. The Totalease
contract  provides  a  total  system  solution  to the customer at a set monthly
cost,  with  system  expansion  available  at  predictable  additional fees. The
typical  Totalease  contract has a term of 60 months, with the customer entitled
to renew the contract at a specified price for up to an additional 36 months.

     Inter-Tel  also  offers  a line of low cost lease purchase financing. Lease
terms  range  from  24  to  84  months  with  $1.00, fixed and fair market value
purchase  options.  In  addition, Inter-Tel will customize financing packages to
suit  customers with special financial needs. By offering this type of financing
to  acquire  Inter-Tel  products  and  services,  the  customer is able to lease
directly  from  the manufacturer and Inter-Tel, or the Inter-Tel dealer, is able
to maintain a close customer relationship.

     Other Products. Inter-Tel also distributes other leading telecommunications
products from its Factored  Products  Division through its direct sales offices,
dealers and VARs.  Factored  Products  represents  products  that  Inter-Tel has
endorsed  as leading  communications  peripherals  utilized  in many  day-to-day
functions.  Businesses require telecommunications  products to provide increased
productivity,  ease  of  operations  and  reliability.  Many of  these  products
interface  with  Inter-Tel  telephone  systems.  Inter-Tel's  product  selection
consists of  videoconferencing,  battery  backup,  headsets,  surge  protection,
paging equipment, wireless communications and data multiplexers.


Sales and Distribution

     The  Company  has developed a distribution network of direct sales offices,
dealers  and  VARs  which  market the Company's products to small to medium size
organizations  and  divisions  or  departments  of  larger organizations. In the
United  States,  the  Company  has  29  direct  sales  offices  and a network of
hundreds  of  dealers  who  purchase  systems  directly from the Company. Direct
dealers  are typically located in geographic areas in which the Company does not
maintain  direct  sales  offices.  The  Company  also  distributes  its products
through  VARs. These resellers have traditionally sold complex data solutions to
customers,  and  the Company is seeking to leverage this distribution network to
capitalize  on the merging of the computer and telephony industries. The Company
maintains  a dealer support office and direct sales office in the United Kingdom
and  has a network of dealers in the United Kingdom and Europe. In addition, the
Company  maintains  a dealer support office and direct sales office in Japan and
is in the process of establishing dealers in other parts of Asia.

     The  Company believes that its success depends in part upon the strength of
its  distribution  channels  and  the  ability  of the Company to maintain close
access to its end user customers. In recent periods, the


                                       29



Company  has  sought  to  improve  its access to end user customers by effecting
strategic  acquisitions  of  resellers  of  telephony  products  and services in
markets  in  which  the  Company  has existing direct sales offices and in other
strategic markets.

     Direct  dealers  and  VARs  typically  enter  into  non-exclusive  reseller
contracts  for  a  term  of  one  or  more years. The Company generally provides
support  and  other  services  to  the  reseller  pursuant  to  the terms of the
agreement.  The  agreements often include requirements that the reseller meet or
use  its  best efforts to meet minimum annual purchase quotas. The Company faces
intense  competition  from  other  telephone  system and voice processing system
manufacturers  for  its  dealers'  attention,  as  most of the Company's dealers
carry products which compete with the Company's products. There can be no
assurance  that  any  such dealer will not promote the products of the Company's
competitors  to  the  detriment  of  the  Company's  products.  The  loss of any
significant  dealer  or  group  of  dealers, or any event or condition adversely
affecting  the Company's dealer network, could have a material adverse effect on
the  Company's  business,  financial  condition and operating results. See "Risk
Factors--Reliance on Dealer Network."

     International  sales,  which  to  date  have not been significant, are made
through  the  Company's  United Kingdom and Japan subsidiaries. In order to sell
its  products  to  customers  in  other  countries, the Company must comply with
local  telecommunications  standards. The Company's AXXESS system can be readily
altered   through  software  modifications,  which  the  Company  believes  will
facilitate  compliance  with  these  local  regulations. In addition, the AXXESS
system  has  been designed to support multi-lingual functionality, and currently
supports  English  and  Japanese.  The  Company is presently establishing dealer
networks  in  Japan  and other parts of Asia and is working to expand its dealer
network  in  the United Kingdom and Europe. International sales are subject to a
number  of  risks,  including  changes  in  foreign  government  regulations and
telecommunications  standards,  export  license requirements, tariffs and taxes,
other  trade  barriers,  fluctuations  in currency exchange rates, difficulty in
collecting  accounts  receivable,  difficulty  in  staffing and managing foreign
operations  and  political  and  economic  instability. Fluctuations in currency
exchange  rates  could  cause  the  Company's products to become relatively more
expensive  to customers in a particular country, leading to a reduction in sales
or  profitability  in  that  country.  In  addition,  the  costs associated with
developing  international  sales  may  not  be  offset by increased sales in the
short term, or at all.

Customer Service and Support

     The Company  believes  that  customer  service  and  support  are  critical
components of customer  satisfaction and the success of the Company's  business.
The Company operates a technical support hotline to provide a range of telephone
support to its distributors,  dealers and end user customers through a toll-free
number.  The Company also provides  on-site customer support and, through remote
diagnostic  procedures,  has the ability to detect and correct  system  problems
from its technical support facilities.

     Information   taken  from  customer  call  records  allows   feedback  into
Inter-Tel's Quality First continuous  improvement process, thus providing a road
map for continuous product and service enhancements. Each direct sales office is
given  a  periodic  service   activity  report   summarizing  the  reasons  that
technicians  are  asking for  assistance  and  common  issues  that give rise to
technical  inquiries.  This  allows  them to  analyze  trends  in their  service
operations and provide better customer service.

Research and Development

     The Company  believes  that its  ability to enhance  its current  products,
develop and  introduce new products on a timely  basis,  maintain  technological
competitiveness  and meet customer  requirements  are essential to the Company's
success.  The Company's  research and development  efforts over the last several
years have been focused primarily on enhancing the existing AXXESS and AXXESSORY
Talk systems with additional applications,  capacity and features,  developing a
unified  messaging  software   application,   developing  a   telecommunications
networking  package,  and  developing  new products like the  Vocal'Net  Server.
Current  efforts are related to support the  development  and  enhancement of IP
telephony  products  like  the  Vocal'Net  Server,   development  of  additional
applications  and  features  of the AXXESS  and  AXXESSORY  Talk  communications
products.  The  software-based  architecture  of the AXXESS  system  facilitates
maintenance and support,  upgrades, and incorporation of additional features and
functionality.


                                       30



     The   Company  had  a  total  of  94  personnel  engaged  in  research  and
development  as  of  September  30, 1997. Research and development expenses were
$4.5  million,  $5.8  million, $6.6 million and $5.9 million in 1994, 1995, 1996
and the nine months ended September 30, 1997, respectively.


Manufacturing

     The Company  manufactures  substantially  all of its systems  through third
party  subcontractors  located in the United States,  China and the Philippines.
These  subcontractors use both standard and proprietary  integrated circuits and
other  electronic   devices  and  components  to  produce  telephone   switches,
telephones   and   printed   circuit   boards  to  the   Company's   engineering
specifications  and designs.  The suppliers  also inspect and test the equipment
before delivering them to the Company, which in some cases then performs systems
integration,   software   loading,   final  testing  and  shipment.   Varian,  a
multinational electronic company,  currently manufacturers a significant portion
of the Company's  products,  including  substantially all of the printed circuit
boards used in the AXXESS and  Inter-Tel  Axxent  systems,  at  Varian's  Tempe,
Arizona  facility.  If Varian or any of the Company's other  manufacturers  were
unable or unwilling to  manufacture  the Company's  products in the future,  the
Company could  experience  substantial  delays in finding  alternative  sources,
which  could  have a  material  adverse  effect on the  Company's  business  and
operating  results.  The Company maintains written agreements with its principal
suppliers. The Company provides a forecast schedule to its suppliers and revises
the forecast on a periodic basis.

     Foreign  manufacturing  facilities  are  subject to changes in governmental
policies,  imposition  of  tariffs  and  import  restrictions, and other factors
beyond  the  Company's  control.  Certain  of  the  microprocessors,  integrated
circuits  and voice processing interface cards used in the Company's systems are
currently  available  from  a  single or limited sources of supply. From time to
time,  the  Company  experiences delays in the supply of components and finished
goods.  Delay  or  lack  of  supply  from  existing  sources or the inability to
develop  alternative sources if and when required in the future could materially
and  adversely  affect  operating  results.  See  "Risk  Factors--Dependence  on
Contract Manufacturers and Component
Suppliers."


Quality

     The Company believes that the quality of its systems,  customer service and
support,  and other aspects of its organization is a critical element of meeting
the needs of its  customers.  Through its Quality First  continuous  improvement
process initiated in 1991, Inter-Tel implements quality processes throughout its
business  operations.  The Company has established  formal  procedures to ensure
responsiveness  to customer  requests,  to monitor response times and to measure
customer  satisfaction.  The Company has also established means by which all end
users,  including  customers  of  the  Company's  resellers,  can  make  product
enhancement  requests directly to the Company.  The Company supports its dealers
and VARs through an extensive  training program at the Company's facility and at
dealer sites, a toll-free telephone number for sales and technical support,  and
the provision of end user marketing materials.  The Company typically provides a
one year  warranty on its systems to end users.  In  manufacturing,  the Company
continuously  monitors the quality of the products produced on its behalf by the
Company's manufacturing  subcontractors,  and is extending the Company's Quality
First continuous improvement process to its suppliers.


Competition

     The market for the Company's  products is highly  competitive and in recent
periods has been characterized by pricing pressures and business consolidations.
The  Company's  competitors  include  Lucent  and  NorTel,  as well as  Comdial,
Executone, Iwatsu, Mitel, NEC, Nitsuko, Panasonic,  Siemens, Toshiba and others.
Many of these competitors have significantly  greater  financial,  marketing and
technical  resources  than the Company.  The Company also  competes  against the
RBOCs,  which  offer  systems  produced  by one or  more  of the  aforementioned
competitors and also offer Centrex systems in which automatic calling facilities
are  provided  through  equipment  located in the  telephone  company's  central
office.


                                       31



     The  Telecommunications  Act  and AT&T's announcement to divide itself into
three  enterprises  has  had  an  impact  on  competition  in the communications
industry.  The  Telecommunications Act opened the market for telephone and cable
television  services,  forcing  telephone  companies  to  open their networks to
competitors  and  giving consumers a choice of local phone carriers. Conversely,
local  phone  companies  are  now  able  to  offer  long  distance  services. In
addition,  cable  companies  can  offer  telephone services and Internet access.
These  changes  have  increased  competition  in the communications industry and
have  created  additional  competition  and  opportunities  in  customer premise
equipment, as these new services and interfaces have become available.

     In the market for voice processing applications,  including voice mail, the
Company  competes  against  AVT,  Active  Voice,  Centigram,  Lucent  and  other
competitors,  certain of which have  significantly  greater  resources  than the
Company. In the market for long distance services,  the Company competes against
AT&T,  MCI,  Sprint  Corporation  and  other  competitors,  many of  which  have
significantly  greater resources than the Company. The Company will also compete
with RBOCs, cable television  companies,  satellite and other wireless broadband
service  providers,  and others for long  distance  business as those  companies
gradually respond to the Telecommunications  Act. Key competitive factors in the
sale of telephone systems and related applications  include price,  performance,
features,  reliability,  service and support,  name recognition and distribution
capability.  The Company believes that it competes favorably in its markets with
respect to the price,  performance  and features of its systems,  as well as the
level of service and support that the Company provides to its customers. Certain
of the Company's  competitors  have  significantly  greater name recognition and
distribution  capabilities than the Company,  although the Company believes that
it has  developed  a  competitive  distribution  presence  in  certain  markets,
particularly  those  where the  Company has direct  sales  offices.  The Company
expects that competition will continue to be intense in the markets addressed by
the  Company,  and there can be no  assurance  that the Company  will be able to
continue to compete successfully.

     In the market for IP  telephony  products,  the  Company  competes  against
existing IP telephony  gateway providers such as Lucent,  NetSpeak  Corporation,
Vocaltec  Communications Ltd., Vienna Systems Corporation and others. Several of
these  competitors  have been active in  developing  and  marketing IP telephony
products  for a  greater  period  of time  than the  Company  and  have  already
established  relationships with customers within their market. In addition,  the
Company could face  significant  competition from vendors such as Cisco Systems,
Inc.,  Bay  Networks,   Inc.,  3Com  Corporation,   Motorola,  Inc.,  and  MICOM
Communications  Corp.,  should such established data vendors choose to enter the
market for IP telephony  products.  Such companies  currently  produce  products
that, if equipped with voice capabilities, could represent a considerable threat
to the Company within that market. Moreover,  should the market for IP telephony
products become fully developed or develop at a rapid rate, large companies such
as IBM and Microsoft could choose to develop  proprietary  software  designed to
facilitate voice communication over an IP network.

     As the  Company  enters the  markets  for local  telephone  service  and IP
network  access,  it will  face  additional  competition  from  RBOCs  and other
providers,  which have larger marketing and sales  organizations,  significantly
greater  financial  and technical  resources  and a larger and more  established
customer  base than the Company.  In addition,  RBOCs and other  providers  have
greater  name  recognition,  more  established  positions in the market and long
standing relationships with customers. Therefore, there can be no assurance that
the Company will compete successfully in these markets.


Intellectual Property Rights

     The  Company's  future  success  will  depend in part upon its  proprietary
technology.  Although the Company has applied to the U.S.  Patent and  Trademark
Office for a patent related to certain aspects of the Vocal'Net technology,  the
Company currently has no issued patents and relies  principally on copyright and
trade  secret  law  and  contractual  provisions  to  protect  its  intellectual
property.  There can be no  assurance  that any patent,  trademark  or copyright
owned by the Company will not be invalidated, circumvented or challenged or that
the  rights  granted  thereunder  will  provide  meaningful  protection  or  any
commercial  competitive  advantage  to the  Company.  Further,  there  can be no
assurance that others will not develop technologies that are similar or superior
to the Company's technology or that duplicate the Company's


                                       32



technology.  As  the  Company  expands  its  international operations, effective
intellectual  property  protection  may  be  unavailable  or  limited in certain
foreign  countries.  There  can  be  no  assurance  that  the steps taken by the
Company  will  prevent  misappropriation  of  its  technology. Litigation may be
necessary  in  the future to enforce the Company's intellectual property rights,
to  protect  the Company's trade secrets, to determine the validity and scope of
the  proprietary  rights  of others, or to defend against claims of infringement
or  invalidity.  Such litigation could result in substantial costs and diversion
of  resources and could have a material adverse effect on the Company's business
and operating results.

     From  time  to  time,  the  Company  is  subject  to  proceedings  alleging
infringement  by the Company of intellectual  property rights of others.  If any
such claim is  asserted  against the  Company,  the Company may seek to obtain a
license under the third party's  intellectual  property rights.  There can be no
assurance that a license will be available on terms acceptable to the Company or
at all. In the alternative,  the Company could resort to litigation to challenge
any such  claim.  Any such  litigation  could  require  the  Company  to  expend
significant  sums and could  require  the  Company to pay  significant  damages,
develop non-infringing technology or acquire licenses to the technology which is
the  subject of the  asserted  infringement,  any of which could have a material
adverse  effect on the Company's  business and operating  results.  In the event
that the Company is unable or chooses not to license such  technology or decides
not to  challenge  such  third  party's  rights,  the  Company  could  encounter
substantial  and costly  delays in product  introductions  while  attempting  to
design  around  such third  party  rights,  or could find that the  development,
manufacture or sale of products requiring such licenses could be foreclosed.


Employees

     As  of  September  30, 1997, the Company had a total of 1,220 employees, of
whom  964  were engaged in sales, marketing and customer support, 57 in quality,
manufacturing  and  related  operations, 94 in research and development, and 105
in  finance,  leasing  and  administration.  The  Company's  future success will
depend  upon  its  ability  to  attract,  retain  and  motivate highly qualified
employees,  who  are  in  great  demand.  The Company believes that its employee
relations are excellent.


Property

     The  Company  maintains its corporate headquarters in 23,000 square feet of
a  building  located  in  Phoenix,  Arizona  pursuant to a lease that expires in
2000,  and  its  principal  manufacturing  operations  in  an 85,000 square foot
building  located in Chandler, Arizona pursuant to a lease that expires in 2008.
The  Company also leases sales and support offices in a total of 28 locations in
the  United  States  and  two  locations overseas. The Company believes that its
facilities  will  be  adequate  to meet its current needs and that additional or
alternative  space  will be available as necessary in the future on commercially
reasonable  terms.  See  "Risk  Factors--Management of Growth; Implementation of
New Management Information Systems."


Legal Proceedings

     The  Company  is involved from time to time in litigation incidental to its
business.  The  Company believes that the outcome of current litigation will not
have  a  material  adverse  effect  upon  its  business,  financial condition or
results  of  operations  and  will  not  disrupt  the  normal  operations of the
Company.


                                       33



                                   MANAGEMENT


     The executive officers and directors of the Company are as follows:


            Name               Age                               Position
- ----------------------------- -----   ---------------------------------------------------------------
                                
Steven G. Mihaylo   .........  53     Chairman of the Board of Directors and Chief Executive Officer
Thomas C. Parise    .........  43     President and Chief Operating Officer
Craig W. Rauchle    .........  42     Executive Vice President
Ross McAlpine    ............  46     President of Inter-Tel Leasing, Inc.
Kurt R. Kneip    ............  35     Vice President, Chief Financial Officer, Secretary and
                                      Assistant Treasurer
J. Robert Anderson  .........  61     Director
Gary Edens    ...............  55     Director
Maurice H. Esperseth   ......  72     Director
C. Roland Haden  ............  57     Director
Norman Stout  ...............  40     Director


     Mr.  Mihaylo,  the  founder  of  the Company, has served as Chairman of the
Board  of  Directors  of the Company since September 1983 and as Chief Executive
Officer  of  the  Company  since  its  inception in July 1969. From July 1969 to
September  1983 and from March 1984 to December 1994, Mr. Mihaylo also served as
President  of  the  Company, and from July 1969 to October 1982 he served as the
Company's  Chairman of the Board of Directors. Mr. Mihaylo also is a director of
MicroAge, Inc. and Microtest, Inc.

     Mr.  Parise  was  elected  President  and  Chief  Operating  Officer of the
Company  in  December  1994.  Since  1986,  he  has  been President of Inter-Tel
Integrated   Services,   Inc.,   a   wholly   owned  research  and  development,
manufacturing  and distribution subsidiary of the Company. From 1986 to December
1994,  he  served  as  Senior  Vice  President  of the Company. From joining the
Company  in  1981  until 1986, Mr. Parise served in various sales management and
executive   capacities.  Mr.  Parise  also  is  a  director  of  Globe  Business
Resources,  Inc.  He  has  also  been  a  director  of  the American Electronics
Association  (the  "AEA")  since 1995 and was elected to the Executive Committee
of the AEA in 1997.

     Mr.  Rauchle  was elected Executive Vice President in December 1994. He had
served  as  Senior  Vice  President  of  the Company, and serves as President of
Inter-Tel  Technologies,  Inc.,  a wholly-owned sales subsidiary of the Company.
Mr.  Rauchle  joined  the  Company  in  1979  as a Branch General Manager of the
Denver  direct  sales  office  and  in  1983  was  appointed Central Region Vice
President and subsequently the Western Regional Vice President.

     Mr.  McAlpine  has served as President of Inter-Tel Leasing, Inc., a wholly
owned  subsidiary  of  the  Company,  since April 1993. From April 1992 to April
1993,  Mr.  McAlpine  served  as the Company's Treasurer, and from April 1991 to
April  1992  served  as  Vice  President  of  Inter-Tel  Communications, Inc., a
wholly-owned  subsidiary  of  the Company. He joined the Company in July 1991 in
connection  with  the  Company's  acquisition of Telecommunications Specialists,
Inc.,  a  telecommunications  firm. Prior to joining Inter-Tel, Mr. McAlpine was
employed in the leasing and financial services industry for 17 years.

     Mr.  Kneip  has served as Vice President and Chief Financial Officer of the
Company  since  September  1993,  and  as  Secretary and Treasurer since October
1994.  He  joined  the  Company  in May 1992 as Director of Corporate Tax, after
being  employed  for  seven years with the accounting firm of Ernst & Young. Mr.
Kneip  is  a  Certified  Public  Accountant,  and  holds  a  B.S.  in Commercial
Economics   from   South  Dakota  State  University  and  a  masters  degree  in
Professional Accountancy from the University of South Dakota.

     Mr.  Anderson  was  elected  as a director of the Company in February 1997.
From  1991  to  1994,  Mr.  Anderson  served  as  Vice Chairman, Chief Financial
Officer  and  a  director  of  the  Grumman  Corporation. From 1983 to 1991, Mr.
Anderson  served  in various senior management capacities for the Firestone Tire
and  Rubber Company, including Vice Chairman of Bridgestone/Firestone, Inc. from
1989  to  1991.  Mr.  Anderson  worked for Ford Motor Company from 1963 to 1983,
serving  from  1978  to  1983  as  President  of the Ford Motor Land Development
Corporation.  Mr.  Anderson  retired  in  1994, and has been an active leader in
various business, civic and philanthropic organizations.


                                       34



     Mr.  Edens  was elected as a director of the Company in October 1994. He is
presently  the  President  of  the  Hanover Companies, Inc., an investment firm.
From  1970  to  October, he served in various executive management capacities in
the  broadcasting media industry, including Chairman and Chief Executive Officer
of  Edens Broadcasting, Inc. from 1984 to 1994. Mr. Edens is an active leader in
various business, civic and philanthropic organizations.

     Mr.  Esperseth  has  been a director of the Company since October 1986. Mr.
Esperseth  joined  the Company in January 1983 as Senior Vice President-Research
and  Development,  after  a  32-year  career with GTE Corporation, and served as
Executive  Vice  President of Inter-Tel from 1986 to 1988. Mr. Esperseth retired
as an officer of the Company in December 1989.

     Dr.  Haden  has  been  a  director of the Company since 1983. Dr. Haden has
been  Vice  Chancellor  and  Dean  of  Engineering of Texas A&M University since
1993.  Previously,  he  served  as Vice Chancellor of Louisiana State University
from  1991  to  1993, Dean of the College of Engineering and Applied Sciences at
Arizona  State University from 1989 to 1991, Vice President for Academic Affairs
at  Arizona  State  University  from  1987  to  1988, and Dean of the College of
Engineering  and Applied Sciences at Arizona State University from 1978 to 1987.
Dr.  Haden holds a doctoral degree in Electrical Engineering from the University
of  Texas  and  has  served  on  the faculties of the University of Oklahoma and
Texas A&M University.

     Mr.  Stout was elected a director of the Company in October 1994. Mr. Stout
has  been  President of Superlite Block, a manufacturer of concrete block, since
February  1993.  Since  1996  Mr.  Stout  has  also  been President of Oldcastle
Architectural  West,  the  parent  company  of  Superlite  Block  and four other
concrete  product  plants.  Mr.  Stout  was  employed  by Bouhem-Fields, Inc. of
Dallas,  Texas, a manufacturer of crushed stone, as Chief Executive Officer from
1990  to  1993 and as Chief Financial Officer from 1986 to 1990. Previously, Mr.
Stout was a Certified Public Accountant with Coopers & Lybrand.

     The   Board  of  Directors  has  an  Audit  Committee  and  a  Compensation
Committee.  The  Audit  Committee,  consisting  of  Messrs.  Anderson, Stout and
Esperseth,  is  charged with reviewing the Company's annual audit and meets with
the  Company's  independent  auditors  to review the Company's internal controls
and  financial  management  practices. The Compensation Committee, consisting of
Messrs.  Esperseth,  Edens  and  Stout,  recommends  to  the  Board of Directors
compensation  for  the  Company's  key  employees  and administers the Company's
stock option plans.


                                       35



                             SELLING SHAREHOLDERS


     The   following   table   sets  forth  certain  information  regarding  the
beneficial  ownership  of  the  Company's Common Stock as of September 30, 1997,
and  as  adjusted  to  reflect  the sale of Common Stock offered hereby, of each
Selling Shareholder:


                                                            Including                      Shares Beneficially
                                Shares Beneficially            All                             Owned After
                            Owned Prior to Offering(1)      Vested and      Number             Offering(1)
                           -----------------------------    Unvested      of Shares     -------------------------
      Name of Owner          Number       Percentage(2)      Options      Offered(3)      Number       Percent(2)
- -------------------------- -----------   ---------------   -----------   ------------   -----------   -----------
                                                                                       
Steven G. Mihaylo   ...... 5,500,000          23.7%        5,900,000           --       5,500,000        20.7%
Thomas C. Parise    ......  187,380             *           561,380        40,000        147,380           *
Craig W. Rauchle    ......   97,900             *           385,400        30,000         67,900           *

<FN>
- ------------

* Less than 1%

(1) Unless  otherwise  indicated  below,  the  persons and entities named in the
    table  have  sole  voting  and  sole  investment  power  with respect to all
    shares   beneficially  owned,  subject  to  community  property  laws  where
    applicable.  Shares  of Common Stock subject to options or warrants that are
    currently  exercisable  or  exercisable within 60 days of September 30, 1997
    are  deemed  to  be  outstanding  and to be beneficially owned by the person
    holding  such  options for the purpose of computing the percentage ownership
    of  such  person  but  are  not  treated  as  outstanding for the purpose of
    computing the percentage ownership of any other person.

(2) Based  on  23,553,942  shares  of  Common  Stock  outstanding  prior  to the
    offering and 26,553,942 shares outstanding after the offering.

(3) Assumes  that  the  Underwriters'  over-allotment  option  to purchase up to
    340,000  shares  from Steven G. Mihaylo, 72,951 shares from Thomas C. Parise
    and 47,549 shares from Craig W. Rauchle has not been exercised.
</FN>



                                       36



                                 UNDERWRITING


     NationsBanc  Montgomery  Securities,  Inc.,  Donaldson,  Lufkin  & Jenrette
Securities   Corporation  and  Jefferies  &  Company,  Inc.  (collectively,  the
"Underwriters")  have  severally agreed, subject to the terms and conditions set
forth  in  the  Underwriting  Agreement,  to  purchase  from the Company and the
Selling  Shareholders  the  number  of shares of Common Stock as indicated below
opposite   their  respective  names  at  the  public  offering  price  less  the
underwriting  discount  set  forth  on  the  cover  page of this Prospectus. The
Underwriting  Agreement  provides  that  the obligations of the Underwriters are
subject   to  certain  conditions  precedent,  and  that  the  Underwriters  are
committed to purchase all of such shares if any are purchased.


     Underwriters                                                    Number of Shares
     ------------                                                    ----------------
                                                                    
     NationsBanc Montgomery Securities, Inc.   ..................
     Donaldson, Lufkin & Jenrette Securities Corporation   ......
     Jefferies & Company, Inc.  .................................
                                                                        ---------
           Total    .............................................       3,070,000
                                                                        =========


     The  Underwriters  have  advised  the  Company and the Selling Shareholders
that  they  propose  initially  to  offer  the Common Stock to the public on the
terms  set  forth  on  the  cover  page of this Prospectus. The Underwriters may
allow  to  selected  dealers a concession of not more than $      per share, and
the  Underwriters may allow, and such dealers may reallow, a concession not more
than  $       per  share  to  certain  other  dealers.  After  the offering, the
offering  price  and other selling terms may be changed by the Underwriters. The
Common  Stock  is offered subject to receipt and acceptance by the Underwriters,
and  to  certain other conditions, including the right to reject orders in whole
or part.

     The  Selling  Shareholders  have  granted  an  option  to  the Underwriters
exercisable  during  the  30-day  period  after  the  date of this Prospectus to
purchase   up   to   460,500   additional   shares  of  Common  Stock  to  cover
over-allotments,  if  any,  at the same price per share as the initial 3,070,000
shares  to be purchased by the Underwriters. To the extent that the Underwriters
exercise  this  option,  each  of the Underwriters will be committed, subject to
certain  conditions,  to  purchase  such  additional shares in approximately the
same  proportion  as set forth in the above table. The Underwriters may purchase
such  shares  only  to  cover  over-allotments  made  in  connection  with  this
offering.

     The  Underwriting  Agreement  provides  that  the  Company  and the Selling
Shareholders   will   indemnify   the   several   Underwriters  against  certain
liabilities,  including  civil  liabilities  under  the  Securities Act, or will
contribute  to  payments  the  Underwriters  may  be required to make in respect
thereof.

     The Company's executive officers, including the Selling Shareholders,  will
collectively hold an aggregate of approximately 5,577,180 shares of Common Stock
after this  offering,  have  agreed  that  without  the  consent of  NationsBanc
Montgomery Securities,  Inc., they will not, directly or indirectly offer, sell,
contract  to sell or  otherwise  dispose  of any  shares of Common  Stock or any
securities  convertible  into or  exchangeable  therefor for a period of 90 days
from the date of this  Prospectus.  The Company has agreed that, for a period of
90 days from the date of this  Prospectus,  it will  not,  without  the  written
consent of  NationsBanc  Montgomery  Securities,  Inc.,  directly or indirectly,
offer, sell, contract to sell or otherwise dispose of any shares of Common Stock
or any  securities,  convertible or  exchangeable  therefor,  subject to limited
exceptions.

     Until  the  distribution  of  the  Common  Stock is completed, rules of the
Commission  may  limit the ability of the Underwriters and certain selling group
members  to  bid  for  and  purchase  the Common Stock. As an exception to these
rules,  an  Underwriter  is  permitted  to  engage  in certain transactions that
stabilize  the  price  of the Common Stock. Such transactions consist of bids or
purchases  for  the  purpose  of pegging, fixing or maintaining the price of the
Common  Stock.  If  the Underwriters create a short position in the Common Stock
in  connection with the offering, i.e., if they sell more shares of Common Stock
than  are  set  forth on the cover page of this Prospectus, the Underwriters may
reduce  that  short  position by purchasing Common Stock in the open market. The
Underwriters  may  also  elect to reduce any short position by exercising all or
part of the over-allotment option described above. The Underwriters may also


                                       37



impose  a  penalty  bid on certain selling group members. This means that if the
Underwriters  purchase shares of Common Stock in the open market to reduce their
short  position  or to stabilize the price of the Common Stock, they may reclaim
the  amount  of  the  selling concession from the selling group members who sold
those shares as part of the offering.

     In  general, purchases of a security for the purpose of stabilization or to
reduce  a short position could cause the price of the security to be higher than
it  might  be  in the absence of such purchases. The imposition of a penalty bid
might  also have an effect on the price of a security to the extent that it were
to  discourage  resales  of  the  security.  Neither  the Company nor any of the
Underwriters  makes  any  representation  or  predictions as to the direction or
magnitude  of  any  effect that the transactions described above may have on the
price  of  the  Common  Stock.  In  addition, neither the Company nor any of the
Underwriters  makes any representation that the Underwriters will engage in such
transactions   or   that   such   transactions,  once  commenced,  will  not  be
discontinued without notice.

     From  time  to  time,  certain of the Underwriters or their affiliates have
provided,  and  may  continue  to  provide,  investment  banking services to the
Company.


                                 LEGAL MATTERS

     The validity of the shares of Common Stock offered hereby and certain other
matters  relating  to Arizona law will be passed upon for the Company by John L.
Gardner,  the Company's  General Counsel.  Certain other legal matters are being
passed  upon for the  Company and the  Selling  Shareholders  by Wilson  Sonsini
Goodrich & Rosati,  Professional Corporation,  Palo Alto, California.  Pillsbury
Madison & Sutro LLP,  San  Francisco,  California,  is acting as counsel for the
Underwriters in connection with certain legal matters  relating to the shares of
Common Stock offered hereby.


                                    EXPERTS

     The  consolidated  financial  statements  of  the  Company appearing in the
Company's  Annual  Report on Form 10-K for the year ended December 31, 1996 have
been  audited  by Ernst & Young LLP, independent auditors, as set forth in their
report  thereon  included  therein  and  incorporated  herein by reference. Such
consolidated  financial  statements  are  incorporated  herein  by  reference in
reliance  upon  such  report given upon the authority of such firm as experts in
accounting and auditing.


                                       38



================================================================================

     No dealer,  sales representative or any other person has been authorized to
give any  information  or to make any  representations  in connection  with this
offering other than those contained in this  Prospectus,  and, if given or made,
such  information  or  representations  must not be relied  upon as having  been
authorized by the Company,  any Selling  Shareholder or the  Underwriters.  This
Prospectus  does not constitute an offer to sell or a solicitation  of any offer
to buy any securities  other than the shares of Common Stock to which it relates
or an offer to, or a solicitation of, any person in any jurisdiction  where such
an offer or  solicitation  would  be  unlawful.  Neither  the  delivery  of this
Prospectus nor any sale made hereunder shall, under any circumstances, create an
implication  that there has been no change in the affairs of the Company or that
information  contained  herein is correct as of any time  subsequent to the date
hereof.




                              ------------------

                               TABLE OF CONTENTS

                              ------------------

                                                 Page
                                                -----
Available Information   .....................      2
Information Incorporated by Reference  ......      2
Prospectus Summary   ........................      3
Risk Factors   ..............................      5
Use of Proceeds   ...........................     14
Dividend Policy   ...........................     14
Price Range of Common Stock   ...............     15
Capitalization ..............................     16
Selected Consolidated Financial Data   ......     17
Management's Discussion and Analysis
   of Financial Condition and Results of
   Operations  ..............................     18
Business ....................................     23
Management  .................................     34
Selling Shareholders ........................     36
Underwriting   ..............................     37
Legal Matters  ..............................     38
Experts  ....................................     38


================================================================================

================================================================================


                                3,070,000 Shares



                               (Graphic Ommitted)



                                  Common Stock


                             ---------------------

                                   PROSPECTUS

                             ---------------------


                            NATIONSBANC MONTGOMERY
                                SECURITIES, INC.



                          DONALDSON, LUFKIN & JENRETTE
                             SECURITIES CORPORATION



                           JEFFERIES & COMPANY, INC.




                                      , 1997

================================================================================




                                    PART II

                    INFORMATION NOT REQUIRED IN PROSPECTUS



ITEM 14. Other Expenses of Issuance and Distribution

     The  following  table  sets forth the various costs and expenses payable by
the  Company, other than underwriting discounts and commissions, of the sale and
distribution  of  the  securities being registered. All of the amounts shown are
estimates  except  the  Securities and Exchange Commission registration fee, the
Nasdaq Stock Market listing fee and the NASD filing fee.

         SEC Registration Fee    ...............  $ 23,805
         NASD Filing Fee   .....................     8,356
         Nasdaq Stock Market Listing Fee  ......    17,500
         Blue Sky Fees and Expenses    .........     5,000
         Legal Fees and Expenses    ............   200,000
         Accounting Fees and Expenses  .........    30,000
         Directors' and Officers' Insurance  ...   300,000
         Printing    ...........................    70,000
         Transfer Agent and Registrar Fees   ...    10,000
         Miscellaneous  ........................    35,339
                                                  ---------
            Total    ...........................  $700,000
                                                  =========

ITEM 15. Indemnification of Directors and Officers

     The  Company's  Restated  Articles  of  Incorporation limit, to the maximum
extent  permitted  by  Arizona  law,  the  personal  liability  of directors for
monetary  damages  for  breach  of  their  fiduciary  duties  as a director. The
Company's  Restated  Articles  of  Incorporation  provide that the Company shall
indemnify  its  officers  and  directors to the fullest extent permitted by law,
subject  to  certain  exceptions.  The  Company has entered into indemnification
agreements  with  its  officers and directors containing provisions which are in
some  respects broader than the specific indemnification provisions contained in
the  Arizona  Revised  Statutes.  The indemnification agreements may require the
Company,  among  other  things, to indemnify such officers and directors against
certain  liabilities  that  may  arise  by  reason of their status or service as
directors  or  officers  (other than liabilities arising from willful misconduct
of  a  culpable  nature),  to advance their expenses incurred as a result of any
proceeding  against  them  as  to which they could be indemnified, and to obtain
directors'  and  officers'  insurance,  if  available  on  reasonable terms. The
Company  believes  that  these  agreements  are  necessary to attract and retain
qualified persons as directors and officers.

     At  present,  there  is  no  pending litigation or proceeding involving any
director,  officer,  employee or agent of the Company where indemnification will
be  required or permitted. The Company is not aware of any threatened litigation
or proceeding which may result in a claim for such indemnification.

     The   Company   currently  maintains  directors'  and  officers'  liability
insurance.

     Reference  is  also  made  to  Section  11  of  the  Underwriting Agreement
contained  in  Exhibit  1.1  hereto,  indemnifying officers and directors of the
Registrant against certain liabilities.


                                      II-1




ITEM 16. Exhibits


 Exhibit
 Number                                             Description
- --------   ----------------------------------------------------------------------------------------------
        
  1.1      Form of Underwriting Agreement.
  4.1      Restated Articles of Incorporation of Registrant, as amended.*
  5.1      Opinion of John L. Gardner, General Counsel, regarding legality of securities being registered.*
 23.1      Consent of Ernst & Young LLP.
 23.2      Consent of John L. Gardner, General Counsel (included in Exhibit 5.1).*
 24.1      Power of Attorney (see page II-3).

<FN>
- ------------

* To be filed by amendment.
</FN>



ITEM 17. Undertakings

     The   undersigned  Registrant  hereby  undertakes  that,  for  purposes  of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
Registrant's  annual  report  pursuant  to Section 13(a) or Section 15(d) of the
Securities  Exchange  Act  that is incorporated by reference in the Registration
Statement  shall  be  deemed  to be a new Registration Statement relating to the
securities  offered  therein,  and  the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof.

     Insofar  as  indemnification  for  liabilities arising under the Securities
Act  may  be  permitted  to  directors,  officers and controlling persons of the
Registrant  pursuant  to  provisions  of the Company's Articles of Incorporation
and  Bylaws,  the  Arizona  Revised  Statutes,  the  Underwriting  Agreement  or
otherwise,  the  Registrant  has  been  advised  that  in  the  opinion  of  the
Securities  and  Exchange  Commission  such  indemnification  is  against public
policy  as  expressed in the Securities Act and is, therefore, unenforceable. In
the  event that a claim for indemnification against such liabilities (other than
the  payment  by  the  Registrant  of  expenses  incurred or paid by a director,
officer  or  controlling  person  of the Registrant in the successful defense of
any  action,  suit  or  proceeding)  is  asserted  by  such director, officer or
controlling   person   in   connection  with  the  securities  being  registered
hereunder,  the  Registrant  will,  unless  in  the  opinion  of its counsel the
question  has  been  settled  by  controlling  precedent,  submit  to a court of
appropriate  jurisdiction  the question of whether such indemnification by it is
against  public  policy  as expressed in the Securities Act and will be governed
by the final adjudication of such issue.

     The undersigned Registrant hereby undertakes that:

       (1) For  purposes  of determining any liability under the Securities Act,
    the  information  omitted  from the form of Prospectus filed as part of this
    Registration  Statement  in  reliance upon Rule 430A and contained in a form
    of  Prospectus  filed by the Registrant pursuant to Rule 424(b)(1) or (4) or
    497(h)  under  the  Securities  Act  shall  be  deemed  to  be  part of this
    Registration Statement as of the time it was declared effective.

       (2) For  the  purpose  of  determining any liability under the Securities
    Act,  each  post-effective  amendment  that  contains  a  form of Prospectus
    shall  be  deemed  to  be  a  new  Registration  Statement  relating  to the
    securities  offered  therein,  and  the  offering of such securities at that
    time shall be deemed to be the initial bona fide offering thereof.


                                      II-2



                                  SIGNATURES

     Pursuant  to  the  requirements  of the Securities Act of 1933, as amended,
the  Registrant,  Inter-Tel,  Incorporated, a corporation organized and existing
under  the law of the State of Arizona, certifies that it has reasonable grounds
to  believe that it meets all of the requirements for filing on Form S-3 and has
duly  caused  this  Registration  Statement  to  be  signed on its behalf by the
undersigned,  thereunto  duly  authorized,  in  the  City  of  Phoenix, State of
Arizona, on the 31st day of October, 1997.


                                        Inter-Tel, Incorporated


                                        By: /s/ Kurt R. Kneip
                                           ------------------------------------
                                           Kurt R. Kneip,
                                           Chief Financial Officer



                               POWER OF ATTORNEY

     KNOW  ALL  PERSONS  BY  THESE  PRESENTS,  that  each person whose signature
appears  below  constitutes  and  appoints  Steven G. Mihaylo and Kurt R. Kneip,
jointly  and  severally, his attorneys-in-fact, each with power of substitution,
for  him  in any and all capacities, to sign any amendments to this Registration
Statement  (including  post-effective  amendments),  and  to file the same, with
exhibits   thereto  and  other  documents  in  connection  therewith,  with  the
Securities  and  Exchange  Commission,  hereby ratifying and confirming all that
each  of  said  attorneys-in-fact,  or  his substitute or substitutes, may do or
cause to be done by virtue hereof.

     Pursuant  to  the  requirements  of the Securities Act of 1933, as amended,
this  Registration  Statement  has been signed below by the following persons in
the capacities and on the dates indicated:




         Signature                                 Title                              Date
- ----------------------------   ----------------------------------------------   -----------------
                                                                          
  /s/   STEVEN G. MIHAYLO      Chairman and Chief Executive Officer              October 31, 1997
- -------------------------      (Principal Executive Officer)
        Steven G. Mihaylo

   /s/      KURT R. KNEIP      Chief Financial Officer (Principal Financial      October 31, 1997
- -------------------------      Officer and Principal Accounting Officer)
           Kurt R. Kneip

   /s/      GARY D. EDENS      Director                                          October 31, 1997
- -------------------------
           Gary D. Edens

 /s/ MAURICE H. ESPERSETH      Director                                          October 31, 1997
- -------------------------
      Maurice H. Esperseth

  /s/     C. ROLAND HADEN      Director                                          October 31, 1997
- -------------------------
         C. Roland Haden

    /s/      NORMAN STOUT      Director                                          October 31, 1997
- -------------------------
           Norman Stout

 /s/   J. ROBERT ANDERSON      Director                                          October 31, 1997
- -------------------------
       J. Robert Anderson



                                      II-3



                            Inter-Tel, Incorporated

                       REGISTRATION STATEMENT ON FORM S-3


                                 EXHIBIT INDEX


                                                                                                  Sequentially
 Exhibit                                                                                           Numbered
 Number                                        Description                                           Page
- ---------   ----------------------------------------------------------------------------------   -------------
                                                                                           
    1.1     Form of Underwriting Agreement.
    4.1     Restated Articles of Incorporation of Registrant, as amended.*
    5.1     Opinion of John L. Gardner, General Counsel, regarding legality of securities being
              registered.*
   23.1     Consent of Ernst & Young LLP.
   23.2     Consent of John L. Gardner, General Counsel (included in Exhibit 5.1).*
   24.1     Power of Attorney (see page II-3).

<FN>
- ------------

* To be filed by amendment.
</FN>


                                      II-4