As filed with the Securities and Exchange Commission on December 14, 2001
                                                   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
 incorporation or organization)                              Identification No.)

                             1615 South 52nd Street
                              Tempe, Arizona 85281
                                 (480) 446-7630
     (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,
                      Chief Executive Officer and President
                             Inter-Tel, Incorporated
                             1615 South 52nd Street
                              Tempe, Arizona 85281
                                 (408) 446-7630
     (Address, including zip code and telephone number, including area code,
                              of agent for service)

                                   Copies to:
      Robert G. Day, Esq.                                    John L. Gardner
      Caine T. Moss, Esq.                                    General Counsel
Wilson Sonsini Goodrich & Rosati                         Inter-Tel, Incorporated
    Professional Corporation                             1615 South 52nd Street
       650 Page Mill Road                                 Tempe, Arizona 85281
      Palo Alto, CA 94304                                    (480) 446-7630
         (650) 493-9300
      Fax: (650) 493-6811

     Approximate date of commencement of proposed sale to the public:  From time
to time 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 (the "Securities  Act"),  other than securities  offered only in connection
with dividend or interest reinvestment plans, check the following box. [X]
     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


================================================================================================================
                                                        Proposed Maximum    Proposed Maximum
      Title of Each Class of            Amount to be     Offering Price    Aggregate Offering       Amount of
    Securities to be Registered          Registered        Per Share(1)         Price(1)        Registration Fee
- ----------------------------------------------------------------------------------------------------------------
                                                                                        
Common Stock, no par value per share   460,851 shares         $19.47          $8,972,768.97         $2,151.00
================================================================================================================

(1)  The price of $19.47  per share,  which was the  average of the high and low
     prices of the  Registrant's  Common Stock on the Nasdaq  National Market on
     December 10, 2001, is set forth solely for the purposes of calculating  the
     registration  fee in accordance  with Rule 457(c) of the  Securities Act of
     1933, as amended.

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 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME  EFFECTIVE ON
SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION,  ACTING PURSUANT TO SECTION
8(A), MAY DETERMINE.
================================================================================

PROSPECTUS

(SUBJECT TO COMPLETION, DATED DECEMBER 14, 2001)

                                 460,851 SHARES

                             INTER-TEL, INCORPORATED

                                  COMMON STOCK

     This  prospectus  relates  to the  public  offering,  which  is  not  being
underwritten,  of up to 460,851  shares of our Common  Stock held by some of our
current  shareholders.  The selling  shareholders  identified in this prospectus
acquired their shares of our Common Stock in a private transaction.

     The  prices  at  which  such  shareholders  may  sell  the  shares  will be
determined  by the  prevailing  market  price for the  shares  or in  negotiated
transactions.  We will  not  receive  any of the  proceeds  from the sale of the
shares.

     Our Common Stock is listed on the Nasdaq  National  Market under the symbol
"INTL." On December 11, 2001,  the closing price for our Common Stock was $19.65
per share.

     INVESTING IN THE COMMON STOCK INVOLVES  CERTAIN  RISKS.  SEE "RISK FACTORS"
BEGINNING ON PAGE 5.

     THE SECURITIES AND EXCHANGE COMMISSION AND STATE SECURITIES REGULATORS HAVE
NOT APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS
IS  TRUTHFUL  OR  COMPLETE.  ANY  REPRESENTATION  TO THE  CONTRARY IS A CRIMINAL
OFFENSE.

               The date of this Prospectus is ________ ___, 2001.

     No  person  has  been  authorized  to give any  information  or to make any
representations other than those contained in this prospectus in connection with
the  offering  made  hereby,   and  if  given  or  made,  such   information  or
representations  must not be relied upon as having been authorized by Inter-Tel,
Incorporated  (referred to in this prospectus as "Inter-Tel,"  the "Company" and
"we"), any selling  shareholder or by any other person.  Neither the delivery of
this  prospectus nor any sale made  hereunder  shall,  under any  circumstances,
create  any  implication  that  information  herein  is  correct  as of any time
subsequent to the date hereof.  This  prospectus does not constitute an offer to
sell or a solicitation of an offer to buy any security other than the securities
covered by this  prospectus,  nor does it constitute an offer to or solicitation
of any person in any  jurisdiction in which such offer or  solicitation  may not
lawfully be made.

                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

Where You Can Find More Information............................................3

Forward-Looking Statements.....................................................4

Risk Factors...................................................................5

Use of Proceeds...............................................................15

Selling Shareholders..........................................................15

Plan of Distribution..........................................................16

Indemnification of Directors and Officers.....................................17

Legal Matters.................................................................18

Experts.......................................................................18

                                       -2-

                       WHERE YOU CAN FIND MORE INFORMATION

     We file annual,  quarterly and special reports,  proxy statements and other
information  with the SEC.  You may  read and copy any  document  we file at the
SEC's  public  reference  rooms in  Washington,  D.C.,  New  York,  New York and
Chicago, Illinois. Please call the SEC at 1-800-SEC-0330 for further information
on the public conference rooms. Our SEC filings are also available to the public
at the SEC's website at http://www.sec.gov.

     The SEC allows us to  "incorporate  by reference"  the  information we file
with them,  which means that we can  disclose  important  information  to you by
referring you to those documents.  The information  incorporated by reference is
considered to be part of this prospectus,  and later  information filed with the
SEC will update and supersede this information.  We incorporate by reference the
documents  listed below and any future  filings made with the SEC under  Section
13a,  13(c),  14 or 15(d)  of the  Securities  Exchange  Act of 1934  until  our
offering is completed.

     (1)  The  Company's  Quarterly  Report on Form 10-Q for the  quarter  ended
          September 30, 2001, as filed with the Commission on November 14, 2001;

     (2)  The Company's Quarterly Report on Form 10-Q for the quarter ended June
          30, 2001, as filed with the Commission on August 14, 2001;

     (3)  The  Company's  Quarterly  Report on Form 10-Q for the  quarter  ended
          March 31, 2001, as filed with the Commission on May 15, 2001;

     (4)  The Company's  Annual Report on Form 10-K, for the year ended December
          31, 2000, as filed with the Commission on March 23, 2001; and

     (5)  The  description  of  the  Company's  Common  Stock  contained  in its
          Registration  Statement on Form 8-A, as filed with the  Commission  on
          February 26, 1982.

     You may  request  a copy of  these  filings,  at no  cost,  by  writing  or
telephoning us at the following address:

Kurt R. Kneip
Vice President and Chief Financial Officer
Inter-Tel, Incorporated
1615 South 52nd Street
Tempe, Arizona 85281
(480) 446-7630

     You  should  rely only on the  information  incorporated  by  reference  or
provided in this prospectus or the prospectus supplement.  We have authorized no
one to provide  you with  different  information.  We are not making an offer of
these  securities in any state where the offer is not permitted.  You should not
assume that the information in this  prospectus or the prospectus  supplement is
accurate as of any date other than the date on the front of the document.

                                       -3-

                                    INTER-TEL

     Inter-Tel,  incorporated  in Arizona in 1969, is a single point of contact,
full service provider of digital  business  telephone  systems,  call processing
software,  voice  processing  software,  call  accounting  software,  networking
software,  Internet  Protocol,  or IP, telephony  software,  computer  telephone
integration, or CTI, applications, IP and traditional long distance calling, and
other  communications  services.  Inter-Tel's  products and services include the
Axxess and Eclipse  digital  business  communication  software  platforms,  with
integrated voice processing and unified messaging systems,  InterPrise voice and
data routers,  ClearConnect  Talk-to-Agent e-Commerce software, and IP telephony
communications  services.  The Company also  provides  maintenance,  leasing and
support  services for its products.  The Company's Common Stock is listed on the
Nasdaq National Market System under the symbol "INTL."

                           FORWARD-LOOKING STATEMENTS

     This prospectus and the documents  incorporated herein by reference contain
forward-looking  statements  within the meaning of Section 27A of the Securities
Act and Section 21E of the Exchange Act. Words such as "anticipates," "expects,"
"intends," "may," "will," "should," "potential," "continue," "further," "plans,"
"believes,"  "seeks,"   "estimates,"   variations  of  such  words  and  similar
expressions  are intended to identify  such  forward-looking  statements.  These
statements are not guarantees of future  performance  and are subject to certain
risks,  uncertainties and assumptions that are difficult to predict.  Therefore,
actual results could differ materially from those expressed or forecasted in any
such forward-looking  statements as a result of certain factors, including those
set forth in "Risk  Factors," as well as those noted in similar  sections in the
documents  incorporated herein by reference.  In connection with forward-looking
statements which appear in these disclosures,  investors should carefully review
the factors set forth in this prospectus under "Risk Factors."

                                       -4-

                                  RISK FACTORS

     YOU SHOULD  CAREFULLY  CONSIDER THE RISKS  DESCRIBED BELOW BEFORE MAKING AN
INVESTMENT  DECISION.  THE RISKS AND  UNCERTAINTIES  DESCRIBED BELOW ARE NOT THE
ONLY ONES FACING OUR COMPANY.  ADDITIONAL RISKS AND  UNCERTAINTIES NOT PRESENTLY
KNOWN TO US OR THAT WE CURRENTLY  DEEM  IMMATERIAL  MAY ALSO IMPAIR OUR BUSINESS
OPERATIONS.

     IF ANY OF THE FOLLOWING  RISKS  ACTUALLY  OCCUR,  OUR  BUSINESS,  FINANCIAL
CONDITION OR RESULTS OF OPERATIONS COULD BE MATERIALLY  ADVERSELY  AFFECTED.  IN
SUCH CASE,  THE TRADING  PRICE OF OUR COMMON  STOCK COULD  DECLINE AND YOU COULD
LOSE ALL OR PART OF YOUR INVESTMENT.

     THIS PROSPECTUS ALSO CONTAINS FORWARD-LOOKING STATEMENTS THAT INVOLVE RISKS
AND  UNCERTAINTIES.  OUR  ACTUAL  RESULTS  COULD  DIFFER  MATERIALLY  FROM THOSE
ANTICIPATED IN THESE FORWARD-LOOKING  STATEMENTS AS A RESULT OF CERTAIN FACTORS,
INCLUDING  THE  RISKS  FACED  BY  US  DESCRIBED  BELOW  AND  ELSEWHERE  IN  THIS
PROSPECTUS.

OUR MARKET IS SUBJECT TO RAPID TECHNOLOGICAL CHANGE AND TO COMPETE SUCCESSFULLY,
WE MUST  CONTINUALLY  INTRODUCE  NEW AND ENHANCED  PRODUCTS  AND  SERVICES  THAT
ACHIEVE BROAD MARKET ACCEPTANCE.

     The  market  for our  products  and  services  is  characterized  by  rapid
technological  change,  evolving industry standards and vigorous customer demand
for new products,  applications and services. To compete  successfully,  we must
continually enhance our existing  telecommunications  products, related software
and customer  services as well as develop new technologies and applications in a
timely and  cost-effective  manner.  If we fail to  introduce  new  products and
services  that  achieve  broad  market  acceptance,  or if we do not  adapt  our
existing  products  and  services  to  customer  demands  or  evolving  industry
standards,  our business could be  significantly  harmed.  In addition,  current
competitors or new market entrants may offer products,  applications or services
that are better  adapted to changing  technology  or  customer  demands and that
could render our products and services unmarketable or obsolete.

     In addition, if the markets for CTI applications, Internet Protocol, or IP,
network  products,  or related  products  fail to develop or continue to develop
more slowly than we anticipate, or if we are unable for any reason to capitalize
on any of these emerging market opportunities, our business, financial condition
and operating results could be significantly harmed.

OUR FUTURE SUCCESS  LARGELY DEPENDS ON INCREASING  COMMERCIAL  ACCEPTANCE OF OUR
AXXESS, ECLIPSE AND ENCORE PLATFORMS,  INTERPRISE PRODUCTS, AND RELATED COMPUTER
TELEPHONY PRODUCTS.

     During the past few years,  we have introduced  transparent  networking and
unified messaging on our Axxess, Eclipse and Encore platforms and introduced our
InterPrise family of voice and data convergence products. In 2000, we introduced
ClearConnect,  a  software-based  telephone  that  runs  on a  PC,  ClearConnect
Talk-to-Agent,  an e-commerce  "touch-to-talk"  web call  product,  a line of IP
voice terminals that add IP telephony to the Axxess and Eclipse  platforms,  and
several other  telephony-related  products.  During the past 12 months, sales of
our Axxess digital communications  platforms and related software have comprised
a substantial  portion of our net sales.  Our future success  depends,  in large
part,  upon increased  commercial  acceptance and adoption of the InterPrise and
related computer telephony products,  the Axxess platform, the Eclipse platform,
Encore  products,  as well as future upgrades and enhancements to these products
and networking platforms. We cannot assure that these products or platforms will
achieve commercial acceptance in the future.

                                       -5-

OUR  PRODUCTS  ARE COMPLEX AND MAY CONTAIN  ERRORS OR DEFECTS  THAT ARE DETECTED
ONLY AFTER THEIR  RELEASE,  WHICH MAY CAUSE US TO INCUR  SIGNIFICANT  UNEXPECTED
EXPENSES AND LOST SALES.

     Our  telecommunications  products  are  highly  complex.  Although  our new
products and upgrades are examined and tested prior to release, they can only be
fully tested when used by a large customer base. Consequently, our customers may
discover  program  errors,  or bugs,  or other  defects  after new  products and
upgrades  have  been  released.  Some of these  errors or bugs may  result  from
defects  contained in component  parts or software  from our  suppliers or other
third  parties  that are  intended to be  compatible  with our products and over
which we have little or no control. Although we have test procedures and quality
control  standards  designed to minimize the number of errors and defects in our
products,  we cannot  assure that our new products and upgrades  will be free of
bugs when  released.  If we are unable to quickly or  successfully  correct bugs
identified after release, we could experience any of the following,  which would
harm our business:

     *    costs associated with the remediation of any problems;
     *    costs associated with design modifications;
     *    loss of or delay in revenues;
     *    loss of customers;
     *    failure to achieve market acceptance or loss of market share;
     *    increased service and warranty costs;
     *    liabilities to our customers; and
     *    increased insurance costs.

THE COMPLEXITY OF OUR PRODUCTS COULD CAUSE DELAYS IN THE DEVELOPMENT AND RELEASE
OF NEW  PRODUCTS AND  SERVICES.  AS A RESULT,  CUSTOMER  DEMAND FOR OUR PRODUCTS
COULD DECLINE, WHICH COULD CAUSE OUR BUSINESS TO BE HARMED.

     Due to the complexity of our products,  we have in the past experienced and
expect in the future to experience  delays in the development and release of new
products or product enhancements. If we fail to introduce new software, products
or  services in a timely  manner,  or fail to release  upgrades to our  existing
systems or products on a regular and efficient  basis,  customer  demand for our
products could decline, which would harm our business.

BUSINESS  ACQUISITIONS  OR JOINT  VENTURES  MAY  DISRUPT  OUR  BUSINESS,  DILUTE
SHAREHOLDER VALUE OR DISTRACT MANAGEMENT ATTENTION.

     As  part  of  our  business  strategy,  we  consider  acquisitions  of,  or
significant  investments  in,  businesses  that  offer  products,  services  and
technologies complementary to ours. Such acquisitions could materially adversely
affect our operating results and/or the price of our common stock.  Acquisitions
also entail numerous risks, including:

     *    unanticipated costs and liabilities associated with the acquisition;
     *    difficulty of assimilating  the operations,  products and personnel of
          the acquired business;

                                       -6-

     *    inability of management to manage the financial and strategic position
          of acquired or developed products, services and technologies;
     *    the diversion of management's attention from our core business;
     *    inability  to  maintain  uniform  standards,  controls,  policies  and
          procedures; and
     *    impairment of  relationships  with  employees and customers  which may
          occur as a result of integration of the acquired business.

     In  particular,  in 2000 we acquired  certain  assets and  assumed  certain
liabilities of Executone  Information  Systems,  Inc. Our operating results were
adversely  affected by several of the factors  described  above  relating to the
Executone acquisition,  including the risks related to unanticipated acquisition
costs and liabilities and impairment of employee and customer relationships,  as
well as the erosion of gross and operating margins. For these and other reasons,
we wrote-off our  investment  in Executone  during the third quarter of 2000. In
addition  to the  Executone  losses  discussed  above,  for  the  quarter  ended
September 30, 2000,  we also recorded a pre-tax loss of $2.0 million  related to
our equity share of Cirilium's net losses. As of the close of the third quarter,
the Company  wrote off its  remaining  investment  in Cirilium of $2.0  million.
Total pre-tax losses from Cirilium from all sources were $8.6 million for 2000.

     Moreover,  in January 2001, we acquired  certain assets and assumed certain
liabilities of Convergent  Technologies,  Inc. In connection with the Convergent
acquisition,  we hired over 200 Convergent  employees and opened eight Inter-Tel
branch offices in previous  Convergent  locations.  In addition to the foregoing
risks  and  uncertainties  we  face  generally  in  our  acquisitions,  we  have
experienced  and may continue to experience the following  difficulties or risks
associated with the Convergent acquisition:

     *    substantially  all of  Convergent's  sales  were  of our  competitor's
          products and services,  and these  manufacturers have made our service
          and maintenance of some of these products expensive and difficult;
     *    a number of  Convergent's  customers  have declined the  assignment of
          their maintenance contracts to us;
     *    a number  of the  employees  hired by  Inter-Tel  have not  integrated
          successfully,  and additional employees may not integrate successfully
          or timely into the Inter-Tel business model and plans; and
     *    some or all of the independent  contractors who performed projects for
          Convergent have not assumed similar roles with Inter-Tel.

     In  April  2001,   Convergent  and  its  parent   corporation,   Convergent
Communications,  Inc.,  filed  for  protection  under  Chapter  11 of  the  U.S.
Bankruptcy Code. As a result of this bankruptcy filing,  Inter-Tel concluded its
transactions with Convergent and its representatives, including matters relating
to accounts  receivable,  inventory,  maintenance and customer  relations issues
through  bankruptcy court petitions and other means.  Inter-Tel  completed these
contractual  matters and reached a settlement  agreement  which  resulted in the
payment  of $6.7  million to  Inter-Tel  from  escrow  funds and  directly  from
Convergent.

     In  July  2001,   Inter-Tel   agreed  to  sell  83%  of   Inter-Tel.NET  to
Comm-Services  Corporation.  In connection  with this  transaction,  the Company
assessed the fair value of the net assets of  Inter-Tel.NET  as of September 30,
2001 under FAS 121 to arrive at an  adjustment  to the  remaining  investment in
Inter-Tel.NET.  The  nonrecurring  charge  recorded as of the close of the third
quarter  totaled $5.4 million  ($3.4  million  after tax),  associated  with the

                                       -7-

impairment of the Company's  investment in Inter-Tel.NET.  The recording of this
charge adversely  affected our operating  results for the third quarter of 2001.
Moreover,   the  Company   continues  to  maintain  an   investment  of  17%  in
Inter-Tel.NET  and our  financial  condition  will be adversely  affected if the
Inter-Tel.NET business is unsuccessful.

     Finally,  to the extent  that shares of our stock or the rights to purchase
stock are issued in  connection  with any future  acquisitions,  dilution to our
existing  shareholders  will result and our earnings  per share may suffer.  Any
future  acquisitions may not generate  additional revenue or provide any benefit
to our business,  and we may not achieve a satisfactory return on our investment
in any acquired businesses.

WE MAY NOT BE ABLE TO ADEQUATELY  PROTECT OUR PROPRIETARY  TECHNOLOGY AND MAY BE
INFRINGING UPON THIRD-PARTY INTELLECTUAL PROPERTY RIGHTS.

     Our success  depends upon our  proprietary  technology.  We currently  hold
patents for 17  telecommunication  and unified messaging  products and have also
applied to the U.S. Patent and Trademark Office for six additional  patents.  We
also rely on  copyright  and trade  secret  law and  contractual  provisions  to
protect our  intellectual  property.  Despite these  precautions,  third parties
could copy or otherwise obtain and use our technology without authorization,  or
develop similar technology independently.

     We cannot  assure that any patent,  trademark or  copyright  that we own or
have applied to own, will not be  invalidated,  circumvented  or challenged by a
third  party.  Effective  protection  of  intellectual  property  rights  may be
unavailable  or  limited  in  foreign  countries.  We  cannot  assure  that  the
protection of our proprietary  rights will be adequate or that  competitors will
not independently  develop similar technology,  duplicate our services or design
around any patents or other intellectual property rights we hold. Litigation may
be  necessary  in the future to enforce our  intellectual  property  rights,  to
protect  our  trade  secrets,  to  determine  the  validity  and  scope  of  the
proprietary  rights of others,  or to defend against claims of  infringement  or
invalidity.  Litigation could be costly, absorb significant  management time and
harm our business.

     We are also  subject  to third  party  claims  that our  current  or future
products or services  infringe upon their rights. In this regard, we are subject
to  proceedings  alleging that certain of our key products  infringed upon third
party intellectual property rights, including patents,  trademarks,  copyrights,
or other intellectual  property rights. We have viewed presentations from two of
our primary competitors,  Lucent and Avaya, a spin-off of Lucent,  alleging that
our  Axxess  digital  communications  platform  utilizes  inventions  covered by
certain  of  such  competitor's  patents.  We  are  continuing  the  process  of
investigating this matter. Additionally, we recently received a letter from AT&T
alleging  that certain of our IP products  infringe  upon  certain  intellectual
property protected by AT&T's patents. Although we have denied AT&T's allegations
and intend to vigorously defend our position,  we cannot assure you that we will
ultimately  prevail in this dispute.  When any such claims are asserted  against
us, we may seek to  license  the third  party's  intellectual  property  rights.
Purchasing  such licenses can be expensive,  and we cannot assure that a license
will be available on prices or other terms acceptable to us, if at all.

     Alternatively,  we could resort to  litigation  to challenge  such a claim.
Litigation  could require us to expend  significant  sums of cash and divert our
management's  attention.  In the  event  that a  court  renders  an  enforceable
decision with respect to our  intellectual  property,  we may be required to pay
significant damages,  develop  non-infringing  technology or acquire licenses to
the technology that is the subject of the infringement.  Any of these actions or
outcomes could harm our business,  financial condition and operating results. If
we are unable or choose not to license technology,  or decide not to challenge a
third  party's  rights,  we could  encounter  substantial  and costly  delays in

                                       -8-

product  introductions.  These delays could result from efforts to design around
asserted third party rights or our discovery that the  development,  manufacture
or sale of products requiring these licenses could be foreclosed.

OUR IP NETWORK PRODUCTS MAY BE VULNERABLE TO VIRUSES, OTHER SYSTEM FAILURE RISKS
AND SECURITY CONCERNS.

     The Inter-Tel  InterPrise,  ClearConnect,  Axxess NT-CPU,  Voice Processing
Software,  and Unified Messaging Software products may 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 that
could harm our  operations and revenues.  In addition,  we may lose customers if
inappropriate  use of the  Internet  or  other  IP  networks  by  third  parties
jeopardized  the security of  confidential  information,  such as credit card or
bank account  information or the content of  conversations  over the IP network.
User  concerns  about  privacy and  security may cause IP networks in general to
grow more slowly,  and impair market  acceptance  of our IP network  products in
particular, until more comprehensive security technologies are developed.

WE HAVE MANY  COMPETITORS AND EXPECT NEW COMPETITORS TO ENTER OUR MARKET,  WHICH
COULD PUT PRESSURE ON US.

     The markets for our products and services are extremely  competitive and we
expect  competition  to  increase  in the  future.  Our  current  and  potential
competitors in our primary business segments include:

     *    PABX and  core  systems  providers  such as  Avaya  (formerly  part of
          Lucent),  Nortel,  Comdial,  Iwatsu,  Mitel, NEC, Panasonic,  Siemens,
          Toshiba, 3Com and Cisco Systems;
     *    large data routing companies such as Cisco Systems and 3Com;
     *    voice  processing  applications  providers such as AVT,  Active Voice,
          ADC, Lucent and Avaya;
     *    long distance  services  providers such as AT&T, MCI WorldCom,  Sprint
          and Qwest Communications;
     *    large computer corporations such as Microsoft and IBM; and
     *    regional  Bell  operating   companies,   or  RBOCs,  cable  television
          companies  and  satellite  and  other   wireless   broadband   service
          providers.

     These and other companies may form strategic  relationships with each other
to  compete  with  us.  These  relationships  may  take  the  form of  strategic
investments,   joint-marketing   agreements,   licenses  or  other   contractual
arrangements,  which arrangements  increase our competitors'  ability to address
customer needs with their product and service offerings.

     Many  of our  competitors  and  potential  competitors  have  substantially
greater financial,  customer support, technical and marketing resources,  larger
customer bases,  longer operating  histories,  greater name recognition and more
established  relationships in the industry than we do. We cannot be sure that we
will have the resources or expertise to compete  successfully in the future. Our
competitors may be able to:

     *    develop and expand their product and service offerings more quickly;
     *    adapt to new or emerging  technologies  and  changing  customer  needs
          faster;

                                       -9-

     *    take advantage of acquisitions and other opportunities more readily;
     *    negotiate more favorable licensing agreements with vendors;
     *    devote greater  resources to the marketing and sale of their products;
          and
     *    address customers' service-related issues better.

     Some  of our  competitors  may  also  be able  to  provide  customers  with
additional  benefits  at lower  overall  costs or to  reduce  their  application
service charges aggressively in an effort to increase market share. We cannot be
sure  that we will be able to  match  cost  reductions  by our  competitors.  In
addition,  we believe that there is likely to be  consolidation  in our markets,
which could lead to increased  price  competition and other forms of competition
that could cause our business to suffer.

OUR  RELIANCE  ON A  LIMITED  NUMBER OF  SUPPLIERS  FOR KEY  COMPONENTS  AND OUR
INCREASING  DEPENDENCE  ON CONTRACT  MANUFACTURERS  COULD  IMPAIR OUR ABILITY TO
MANUFACTURE AND DELIVER OUR PRODUCTS AND SERVICES IN A TIMELY MANNER.

     We currently  obtain certain key  components for our digital  communication
platforms,   including  certain  microprocessors,   integrated  circuits,  power
supplies,  voice  processing  interface  cards and IP  telephony  cards,  from a
limited  number of suppliers  and  manufacturers.  Our reliance on these limited
suppliers and contract  manufacturers  involves certain risks and uncertainties,
including  the  possibility  of a shortage  or  delivery  delay for  certain key
components,  although we believe that  alternate  sources are available for most
key  components.  We currently  manufacture our products  through  manufacturers
located in the United States, the People's Republic of China, the United Kingdom
and  Mexico.  Foreign  manufacturing   facilities  are  subject  to  changes  in
governmental  policies,  imposition of tariffs and import restrictions and other
factors beyond our control.  Varian currently manufactures a significant portion
of our products at Varian's  Tempe,  Arizona and Poway,  California  facilities,
including  substantially  all of the printed  circuit boards used in the Axxess,
the Eclipse, the Inter-Tel Axxent, as well as substantially all of the Executone
computer  telephony  products.  We have occasionally  experienced  delays in the
supply of  components  and  finished  goods.  We cannot  assure that we will not
experience similar delays in the future.

     Our reliance on third party  manufacturers  involves a number of additional
risks, including reduced control over delivery schedules,  quality assurance and
costs.  Our  business  may be harmed by any delay in delivery or any shortage of
supply of components or finished goods from a supplier. Our business may also be
harmed if we cannot  efficiently  develop  alternative or additional  sources if
necessary.  To date,  we have been able to obtain  supplies  of  components  and
products  in a  timely  manner  even  though  we do not  have  long-term  supply
contracts with any of our contract manufacturers. However, we cannot assure that
we 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.

WE RELY ON OUR DEALER NETWORK FOR A SUBSTANTIAL  PORTION OF OUR NET SALES AND IF
THESE DEALERS DO NOT EFFECTIVELY PROMOTE AND SELL OUR PRODUCTS, OUR BUSINESS AND
OPERATING RESULTS COULD BE HARMED.

     A  substantial  portion  of our net sales is made  through  our  network of
independent  dealers.  We face intense  competition from other telephone,  voice
processing,  and  voice/data  router  system  manufacturers  for these  dealers'
business,  as most of our dealers carry products that compete with our products.
Our  dealers  may choose to  promote  the  products  of our  competitors  to our
detriment.  The loss of any significant dealer or group of dealers, or any event
or condition  harming our dealer  network,  could harm our  business,  financial
condition and operating results.

                                      -10-

IF WE LOSE KEY PERSONNEL OR ARE UNABLE TO HIRE ADDITIONAL QUALIFIED PERSONNEL AS
NECESSARY,  WE MAY NOT BE ABLE TO  EFFECTIVELY  MANAGE GROWTH IN OUR BUSINESS OR
ACHIEVE OUR OBJECTIVES.

     We depend on the  continued  service  of, and our  ability  to attract  and
retain, qualified technical,  marketing, sales and managerial personnel, many of
whom would be  difficult  to replace.  Competition  for  qualified  personnel is
intense,  and we have had difficulty  hiring  employees in the timeframe that we
desire,  particularly  skilled  engineers.  Our loss of any key personnel or our
failure to effectively  recruit additional key personnel could make it difficult
for us to manage our business,  make timely product introductions and meet other
key objectives and therefore  harm our business.  For example,  our inability to
retain key executives of Executone following our Executone  acquisition impaired
our ability to benefit from the Executone business and to grow revenues from the
Executone assets.  Moreover, our operating results will be impaired if we lose a
substantial number of key Convergent employees. We cannot assure that we will be
able to continue  attracting and retaining the qualified personnel necessary for
the development of our business.

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

GOVERNMENT  REGULATION OF THIRD PARTY LONG DISTANCE AND NETWORK SERVICE ENTITIES
ON WHICH WE RELY MAY HARM OUR BUSINESS.

     Our  supply of  telecommunications  services  and  information  depends  on
several long distance carriers,  RBOCs,  local exchange  carriers,  or LECs, and
competitive  local  exchange  carriers,  or CLECs.  We rely on these carriers to
provide  network  services  to our  customers  and to  provide  us with  billing
information.  Long  distance  services  are subject to extensive  and  uncertain
governmental  regulation  on both the federal and state level.  We cannot assure
that the  increase  in  regulations  will not harm  our  business.  Our  current
contracts  for the resale of services  through long  distance  carriers  include
multi-year  periods during which we have minimum use requirements  and/or costs.
The market for long  distance  services  is  experiencing,  and is  expected  to
continue  experiencing  significant  price  competition,  and this  may  cause a
decrease  in end-user  rates.  We cannot  assure  that we will meet  minimum use
commitments,  that we will be able to  negotiate  lower  rates with  carriers if
end-user  rates  decrease or that we will be able to extend our  contracts  with
carriers at favorable  prices. If we are unable to secure reliable long distance
and network services from certain long distance carriers, RBOCs, LECs and CLECs,
or if these  entities are unwilling to provide  telecommunications  services and
billing information to us on favorable terms, our ability to expand our own long
distance and network services will be harmed.

THE  EMERGING  MARKET FOR IP NETWORK  TELEPHONY  IS SUBJECT TO MARKET  RISKS AND
UNCERTAINTIES THAT COULD CAUSE SIGNIFICANT DELAYS AND EXPENSES.

     The  market  for IP  network  voice  communications  products  has begun to
develop only recently, is evolving rapidly and is characterized by an increasing
number of market entrants who have introduced or developed products and services
for Internet or other IP network  voice  communications.  As is typical of a new

                                      -11-

and rapidly evolving industry,  the demand for and market acceptance of recently
introduced  IP network  products and services  are highly  uncertain.  We cannot
assure that packet switched technology networks will become widespread.  Even if
packet switched  technology  networks become widespread in the future, we cannot
assure that our products,  particularly the Inter-Tel  InterPrise product lines,
will  successfully  compete against other market players and attain broad market
acceptance.  Although the Company sold 83% of  Inter-Tel.NET  in July 2001,  the
Company   continues  to  maintain  an  investment   of  17%  in   Inter-Tel.NET.
Accordingly,   our  financial  condition  will  be  adversely  affected  if  the
Inter-Tel.NET business is unsuccessful.

     Moreover,  the adoption of packet switched  technology  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.  If the  market  for IP network  voice  communications  fails to
develop or to develop more slowly than we anticipate,  our IP network  telephony
products  could  fail  to  achieve  market  acceptance,   which  in  turn  could
significantly harm our business, financial condition and operating results. This
growth  may  be  inhibited   by  a  number  of  factors,   such  as  quality  of
infrastructure;  security  concerns;  equipment,  software  or other  technology
failures; regulatory encroachments;  inconsistent quality of service; poor sound
quality over IP networks as compared to circuit-switched  networks;  and lack of
availability  of  cost-effective,  high-speed  network  capacity.  Moreover,  as
IP-based data  communications and telephony usage grow, the infrastructure  used
to support  these IP  networks,  whether  public or private,  may not be able to
support the demands  placed on them and their  performance  or  reliability  may
decline.  The  technology  that  allows  voice and fax  communications  over the
Internet,  and the delivery of other value-added services, is still in the early
stages of development.

THE  INTRODUCTION  OF NEW  PRODUCTS  AND SERVICES HAS RESULTED IN CHANGES TO OUR
SALES CYCLES AND BACKLOG, WHICH MAY CAUSE FLUCTUATIONS IN OUR QUARTERLY RESULTS.

     In the  past  few  years,  we  introduced  Axxess  networking  systems  and
software,  which are  typically  sold to larger  customers  at a higher  average
selling price. Our Axxess networking products have a relatively high sales price
per unit,  and often  represent  a  significant  and  strategic  decision  by an
enterprise  regarding  our  communications   infrastructure.   Accordingly,  the
purchase of our products  typically  involves  significant  internal  procedures
associated with the evaluation,  testing,  implementation  and acceptance of new
technologies.  This  evaluation  process  frequently  results in a lengthy sales
process  which can range from a few months to more than 12 months,  and subjects
the sales cycle  associated  with the  purchase  of our  products to a number of
significant  risks,  including  budgetary  constraints  and internal  acceptance
reviews. The length of our sales cycle also may vary substantially from customer
to customer.  While our customers are evaluating our products and before placing
an order with us, we may incur  substantial  sales and  marketing  expenses  and
expend significant management effort.  Consequently,  if sales forecasted from a
specific customer for a particular quarter are not realized in that quarter, our
operating results could be materially adversely affected.

     Our  quarterly  operating  results have  historically  depended on, and may
fluctuate in the future as a result of, many factors including:

     *    volume and timing of orders received during the quarter;
     *    gross margin fluctuations associated with the mix of products sold;
     *    the mix of distribution channels;
     *    general economic conditions;

                                      -12-

     *    patterns of capital spending by customers;
     *    the timing of new  product  announcements  and  releases by us and our
          competitors;
     *    pricing pressures, the cost and effect of acquisitions,  in particular
          the Executone and Convergent acquisitions; and
     *    the  availability  and  cost  of  products  and  components  from  our
          suppliers.

     In addition, we have historically operated with a relatively small backlog,
with sales and operating results in any quarter principally  dependent on orders
booked and shipped in that quarter.  This results  primarily from our customers'
desire for immediate shipment and installation of platforms and software. In the
past,  we have  recorded  a  substantial  portion  of our net  sales for a given
quarter in the third month of that  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.  We cannot assure that  historical  trends
for small backlog will continue in the future.

     Our expense levels are based in part on  expectations  of future sales and,
if sales levels do not meet  expectations,  operating  results  could be harmed.
Because sales of digital  communication  platforms  through our dealers  produce
lower gross margins than sales through our direct sales organization,  operating
results  have  varied,  and will  continue  to vary  based upon the mix of sales
through  direct and indirect  channels.  Also, 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 our core  business,  have grown in
recent periods at a faster rate than our overall net sales.  As a result,  gross
margins could be harmed if long distance calling  services  continue to increase
as a percentage of net sales. In addition,  we experience seasonal  fluctuations
in our  operating  results,  as net sales for the first and third  quarters  are
frequently  less than  those  experienced  in the  fourth  and  third  quarters,
respectively.  As a result  of these  and other  factors,  we have  historically
experienced,  and could  continue to experience in the future,  fluctuations  in
sales and operating results on a quarterly basis.

OUR STOCK PRICE HAS BEEN AND MAY CONTINUE TO BE VOLATILE, IMPAIRING YOUR ABILITY
TO SELL YOUR SHARES AT OR ABOVE PURCHASE PRICE.

     The market price for our Common Stock has been highly  volatile.  We cannot
assure that you will be able to sell your shares at or above purchase price. The
volatility  of our stock  could be subject to  continued  wide  fluctuations  in
response to many risk  factors  listed in this  section,  and others  beyond our
control, including:

     *    announcements of developments relating to our business;
     *    fluctuations in our operating results;
     *    shortfalls  in revenue or earnings  relative to  securities  analysts'
          expectations;
     *    announcements  of   technological   innovations  or  new  products  or
          enhancements by us or our competitors;
     *    announcements  of  acquisitions  or  planned   acquisitions  of  other
          companies or businesses;

                                      -13-

     *    investors' reactions to acquisition announcements;
     *    general conditions in the telecommunications industry;
     *    the market for Internet-related products and services
     *    changes in the national or worldwide economy;
     *    changes in legislation or regulation affecting the  telecommunications
          industry;
     *    an outbreak of hostilities or terrorist acts;
     *    developments  relating  to our and third party  intellectual  property
          rights; and
     *    changes in our relationships with our customers and suppliers.

     In addition,  stock  prices of  technology  companies  in general,  and for
Internet-based  voice and data communications  companies of technology stocks in
particular,  have experienced  extreme price  fluctuations in recent years which
have often been unrelated to the operating performance of affected companies. We
cannot  assure  that the market  price of our Common  Stock will not  experience
significant   fluctuations  in  the  future,  including  fluctuations  that  are
unrelated to our performance.

OUR CHAIRMAN OF THE BOARD OF DIRECTORS,  CEO AND PRESIDENT CONTROLS 22.1% OF OUR
COMMON  STOCK  AND  BE  ABLE  TO  SIGNIFICANTLY   INFLUENCE   MATTERS  REQUIRING
SHAREHOLDER APPROVAL.

     As of September 30, 2001, Steven G. Mihaylo,  the Company's Chairman of the
Board of Directors,  Chief Executive Officer and President,  beneficially  owned
approximately  22.1% of the outstanding shares of the Common Stock. As a result,
he has the ability to exercise significant  influence over all 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.  Any of the
foregoing could result in a material  adverse effect on the Company's  business,
financial condition and operating results.

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

                                      -14-

                                 USE OF PROCEEDS

     Inter-Tel  will not receive any of the proceeds from the sale of the shares
offered by this  prospectus.  All proceeds  from the sale of the shares  offered
hereby will be for the account of the selling shareholders,  as described below.
See "Selling Shareholders" and "Plan of Distribution."

                              SELLING SHAREHOLDERS

     The following table sets forth as of the date of this prospectus,  the name
of each of the selling  shareholders,  the number of shares of Common Stock that
each  selling  shareholder  owns,  the number of shares of Common Stock owned by
each selling  shareholder that may be offered for sale from time to time by this
prospectus,  and the number of shares of Common Stock to be held by each selling
shareholder assuming the sale of all the Common Stock offered hereby.

     Some of the selling  shareholders may distribute their shares, from time to
time, to their limited and/or general partners,  who may sell shares pursuant to
this prospectus.  Each selling shareholder may also transfer shares owned by him
by gift,  and upon any such transfer the donee would have the same right of sale
as the selling shareholder.

     The shares  being  offered by the  selling  shareholders  were  acquired in
connection  with  the  acquisition  of  Intercomm  Americas,  Inc.,  a  Delaware
corporation,  by the Company's Inter-Tel.NET subsidiary,  effected in March 2000
and the subsequent  exercise of an option to convert their  Inter-Tel.Net  share
into Inter-Tel  shares.  We may amend or supplement this prospectus from time to
time to update the disclosure set forth herein.



                              SHARES BENEFICIALLY OWNED                      SHARES BENEFICIALLY OWNED
                                PRIOR TO OFFERING (1)                             AFTER OFFERING
                              -------------------------   NUMBER OF SHARES   -------------------------
NAME OF SELLING STOCKHOLDER     NUMBER         PERCENT      BEING OFFERED      NUMBER        PERCENT
- ---------------------------    --------        -------    ----------------     ------        -------
                                                                              
Greg Somers................     153,617           *            153,617            0             *
Humberto Galvan............     153,617           *            153,617            0             *
Mark Mohr..................     153,617           *            153,617            0             *
                               --------                       --------
     Total                      460,851                        460,851
                               ========                       ========

- ----------
*    Less than 1%
(1)  Based on 24,071,035 shares outstanding as of September 30, 2001.

                                      -15-

                              PLAN OF DISTRIBUTION

     The shares covered by this  prospectus may be offered and sold from time to
time  by  the  selling   shareholders.   The  selling   shareholders   will  act
independently  of  Inter-Tel  in making  decisions  with  respect to the timing,
manner and size of each sale. The selling shareholders may sell the shares being
offered hereby on the Nasdaq National Market, or otherwise,  at prices and under
terms then  prevailing or at prices related to the then current market price, at
varying prices or at negotiated  prices.  The shares offered hereby may be sold,
without limitation, by one or more of the following means of distribution: (a) a
block  trade in which the  broker-dealer  so engaged  will  attempt to sell such
shares as agent, but may position and resell a portion of the block as principal
to facilitate the transaction; (b) purchases by a broker-dealer as principal and
resale by such  broker-dealer  for its own account  pursuant to this prospectus;
(c) an over-the-counter  distribution in accordance with the rules of the Nasdaq
National Market; (d) ordinary  brokerage  transactions and transactions in which
the broker solicits purchasers; and (e) in privately negotiated transactions. To
the extent required,  this prospectus may be amended and supplemented  from time
to time to describe a specific plan of distribution.

     In connection with distributions of the shares offered hereby or otherwise,
the selling shareholders may enter into hedging transactions with broker-dealers
or  other  financial   institutions.   In  connection  with  such  transactions,
broker-dealers  or other  financial  institutions  may engage in short  sales of
Inter-Tel's Common Stock in the course of hedging the positions they assume with
selling shareholders.  The selling shareholders may also sell Inter-Tel's Common
Stock  short and  deliver  the  shares  offered  hereby to close out such  short
positions.  The  selling  shareholders  may  also  enter  into  option  or other
transactions with  broker-dealers or other financial  institutions which require
the delivery to such  broker-dealer  or other  financial  institution  of shares
offered hereby,  which shares such broker-dealer or other financial  institution
may resell  pursuant to this  prospectus (as  supplemented or amended to reflect
such transaction).  The selling  shareholders may also pledge the shares offered
hereby to a broker-dealer or other financial  institution,  and, upon a default,
such  broker-dealer  or other  financial  institution,  may effect  sales of the
pledged  shares  pursuant  to this  prospectus  (as  supplemented  or amended to
reflect such transaction).  In addition,  any shares offered hereby that qualify
for sale pursuant to Rule 144 may, at the option of the holder thereof,  be sold
under Rule 144 rather than pursuant to this prospectus.

     Any  broker-dealer  participating in such transactions as agent may receive
commissions from the selling shareholder and/or purchasers of the shares offered
hereby (and,  if it acts as agent for the  purchaser  of such shares,  from such
purchaser).  Usual and  customary  brokerage  fees  will be paid by the  selling
shareholder.  Broker-dealers  may agree with the selling  shareholder  to sell a
specified number of shares at a stipulated  price per share,  and, to the extent
such a  broker-dealer  is  unable  to do so  acting  as  agent  for the  selling
shareholder, to purchase as principal any unsold shares at the price required to
fulfill the broker-dealer commitment to the selling shareholder.  Broker-dealers
who acquire shares as principal may  thereafter  resell such shares from time to
time in transactions  (which may involve cross and block  transactions and which
may involve sales to and through other broker-dealers, including transactions of
the  nature  described  above) in the  over-the-counter  market,  in  negotiated
transactions or otherwise at market prices  prevailing at the time of sale or at
negotiated  prices,  and in connection with such resales,  may pay to or receive
from the purchasers of such shares commissions computed as described above.

     To comply with the securities  laws of certain states,  if applicable,  the
shares offered hereby will be sold in such jurisdictions only through registered
or  licensed  brokers or  dealers.  In  addition,  in certain  states the shares
offered hereby may not be sold unless they have been registered or qualified for
sale  in  the  applicable  state  or  an  exemption  from  the  registration  or
qualification requirement is available and is complied with.

                                      -16-

     We have advised the selling shareholders that the  anti-manipulation  rules
of Regulation M under the Exchange Act may apply to sales of the shares  offered
hereby in the market and to the activities of the selling shareholders and their
affiliates. In addition, we will make copies of this prospectus available to the
selling  shareholders  and have informed them of the need for delivery of copies
of this  prospectus  to  purchasers  at or  prior to the time of any sale of the
shares offered hereby. The selling  shareholders may indemnify any broker-dealer
than  participates  in  transactions  involving  the sale of the shares  against
certain liabilities, including liabilities arising under the Securities Act.

     Some of the selling  shareholders may distribute their shares, from time to
time, to their limited and/or general partners,  who may sell shares pursuant to
this prospectus.  Each selling shareholder may also transfer shares owned by him
by gift,  and upon any such transfer the donee would have the same right of sale
as the selling shareholder.

     At the time a particular offer of shares is made, if required, a prospectus
supplement  will be  distributed  that will set forth the number of shares being
offered and the terms of the offering,  including  the name of any  underwriter,
dealer or agent,  the  purchase  price paid by any  underwriter,  any  discount,
commission and other item constituting compensation, any discount, commission or
concession  allowed or reallowed or paid to any dealer, and the proposed selling
price to the public.

                    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 or such indemnification.

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

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers or persons controlling Inter-Tel
pursuant to the foregoing provisions,  we have been informed that in the opinion
of the Securities and Exchange Commission such indemnification is against public
policy as expressed in the Act and is therefore unenforceable.

                                      -17-

                                  LEGAL MATTERS

     Certain legal matters  relating to the validity of the  securities  offered
hereby will be passed upon for  Inter-Tel  by Kristi  Bonfiglio,  the  Company's
Corporate Counsel.

                                     EXPERTS

     The consolidated  financial statements of Inter-Tel,  Incorporated included
in Inter-Tel's  Annual Report on Form 10-K for the year ended December 31, 2000,
have been audited by Ernst & Young LLP,  independent  auditors,  as set forth in
their  report  therein and  incorporated  herein by  reference.  Such  financial
statements  have been  incorporated  herein by reference,  in reliance upon such
report  given  on the  authority  of such  firm as  experts  in  accounting  and
auditing.

                                      -18-

                                 460,851 SHARES



                             INTER-TEL, INCORPORATED


                                  COMMON STOCK


                                   ----------
                                   PROSPECTUS
                                   ----------


                             _________________, 2001

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

     The selling shareholders will pay all expenses incident to the offering and
sale to the public of the shares being registered other than any commissions and
discounts  of  underwriters,  dealers or agents  and any  transfer  taxes.  Such
expenses  are set forth in the  following  table.  All of the amounts  shown are
estimates except for the Securities and Exchange Commission ("SEC") registration
fee.

          SEC Registration Fee......................     $  2,151.00
          Accounting fees and expenses..............        5,000.00
          Legal fees and expenses...................       10,000.00
          Miscellaneous.............................        5,000.00
                                                         -----------
               Total................................     $ 22,151.00
                                                         ===========

ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS

     The Registrant'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
Registrant's  Restated  Articles of  Incorporation  provide that the  Registrant
shall  indemnify its officers and directors to the fullest  extent  permitted by
law,   subject  to  certain   exceptions.   The   Registrant  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  Registrant,  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
Registrant  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 Registrant  where  indemnification
will be required or permitted.  The  Registrant  is not aware of any  threatened
litigation or proceeding which may result in a claim or such indemnification.

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

ITEM 16. EXHIBITS

   EXHIBIT
    NUMBER
    ------
     5.1            Opinion  of  Kristi  Bonfiglio,   the  Company's   corporate
                    counsel, regarding legality of the securities being offered.

     23.1           Consent of Kristi Bonfiglio, the Company's corporate counsel
                    (included in Exhibit 5.1).

     23.2           Consent of Ernst & Young LLP, independent accountants.

     24.1           Power of Attorney (contained on Page II-4).

                                      II-1

ITEM 17. UNDERTAKINGS

     A. RULE 415 OFFERINGS:

          The undersigned Registrant hereby undertakes that:

          (1) To file,  during  any  period  in which  offers or sales are being
made, a post-effective  amendment to this Registration Statement: (i) to include
any  prospectus  required by section  10(a)(3) of the  Securities  Act;  (ii) to
reflect in the  prospectus  any facts or events arising after the effective date
of the  Registration  Statement  (or the most  recent  post-effective  amendment
thereof) which, individually or in the aggregate, represent a fundamental change
in the information set forth in the Registration Statement.  Notwithstanding the
foregoing,  any  increase or decrease  in volume of  securities  offered (if the
total  dollar  value of  securities  offered  would not  exceed  that  which was
registered) and any deviation from the low or high end of the estimated  maximum
offering  range  may be  reflected  in the  form of  prospectus  filed  with the
Commission  pursuant to Rule 424(b) (Section 230.424(b) of this chapter) if, the
aggregate,  the changes in volume and price  represent no more than a 20% change
in the  maximum  aggregate  offering  price  set  forth in the  "Calculation  of
Registration Fee" table in the effective  registration  statement;  and (iii) to
include any material  information  with respect to the plan of distribution  not
previously  disclosed in the  Registration  Statement or any material  change to
such information in the Registration Statement;  provided, however, that (i) and
(ii) do not apply if the Registration Statement is on Form S-3, Form S-8 or Form
F-3, and the information  required to be included in a post-effective  amendment
by (i) and (ii) is contained in periodic  reports filed with or furnished to the
Commission  by the  Registrant  pursuant  to Section 13 or Section  15(d) of the
Exchange Act that are incorporated by reference in the Registration Statement.

          (2) That,  for the  purpose of  determining  any  liability  under the
Securities Act, each such  post-effective  amendment 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.

          (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

     B. UNDERTAKING  REGARDING  FILINGS  INCORPORATING  SUBSEQUENT  EXCHANGE ACT
DOCUMENTS BY REFERENCE.

     The  undersigned   Registrant  hereby  undertakes  that,  for  purposes  of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable,  each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) 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.

     C. UNDERTAKING REGARDING INDEMNIFICATION.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors,  officers and controlling  persons of the
registrant pursuant to the provisions  described in Item 15 above, 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

                                      II-2

in the  Securities  Act and is,  therefore,  unenforceable.  In the event that a
claim for  indemnification  against  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,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  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.

     D. UNDERTAKING REGARDING REGISTRATION STATEMENT PERMITTED BY RULE 430A.

          The undersigned Registrant hereby undertakes that:

          (1) For purposes of determining any liability under the Securities Act
of 1933, 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  liability under the Securities Act
of 1933, 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-3

                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the Registrant
certifies  that it has  reasonable  cause 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 Tempe, State of Arizona, on December 14, 2001.

                                  INTER-TEL, INCORPORATED


                                  By: /s/ Kurt R. Kneip
                                      ------------------------------------------
                                      Kurt R. Kneip
                                      VICE PRESIDENT AND 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  the  power  of
substitution,  for him in any and all capacities,  to sign any amendment to this
Registration  Statement on Form S-3, and to file the same, with exhibits thereto
and other  documents in connection  therewith,  with the Securities and Exchange
Commission, granting to said attorney-in-fact full power and authority to do and
perform  each and every  act and thing  requisite  and  necessary  to be done in
connection therewith,  as fully to all intents and purposes as he might or could
do in person, hereby ratifying and confirming all that said attorney-in-fact, or
his  substitute  or  substitutes,  may lawfully do or cause to be done by virtue
hereof.

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement has been signed below by the following persons on behalf
of the Registrant on December 14, 2001.

           SIGNATURE                                    TITLE
           ---------                                    -----

/s/ Steven G. Mihaylo                   President  and  Chief Executive Officer,
- ----------------------------------      Chairman  of  the Board of Directors and
Steven G. Mihaylo                       Attorney-in-Fact


/s/ J. Robert Anderson                  Director
- ----------------------------------
J. Robert Anderson


/s/ Jerry W. Chapman                    Director
- ----------------------------------
Jerry W. Chapman


/s/ Gary D. Edens                       Director
- ----------------------------------
Gary D. Edens


/s/ C. Roland Haden                     Director
- ----------------------------------
C. Roland Haden

*By /s/ Kurt R. Kneip
    ----------------------------------
    Kurt R. Kneip
    (Attorney-in-fact)

                                      II-4

                                INDEX TO EXHIBITS

   EXHIBIT
    NUMBER
    ------
     5.1            Opinion  of  Kristi  Bonfiglio,   the  Company's   corporate
                    counsel, regarding legality of the securities being offered.

     23.1           Consent of Kristi Bonfiglio, the Company's corporate counsel
                    (included in Exhibit 5.1).

     23.2           Consent of Ernst & Young LLP, independent accountants.

     24.1           Power of Attorney (contained on Page II-4).