ARTICLES OF INCORPORATION
                                       OF
                          MCTI ACQUISITION CORPORATION

THIS IS TO CERTIFY THAT,

                  FIRST: The undersigned, William G. Miller, whose post office
address is c/o McGuire, Woods, Battle & Boothe, LLP, 1627 Eye Street, N.W.,
Washington D.C. 20006, being at least eighteen (18) years of age, does hereby
form a corporation under the general laws of the State of Maryland.

                  SECOND:  The name of the corporation (which is hereinafter
called the "Corporation") is:

                           MCTI Acquisition Corporation

                  THIRD: The purpose for which the Corporation is formed is to
carry on any lawful business, within the State of Maryland or elsewhere, and the
Corporation shall have, enjoy and exercise all of the powers and rights now or
hereafter conferred by statute upon corporations.

                  FOURTH:  The post office address of the principal office of
the Corporation in the State of Maryland is 11 East Chase Street, Baltimore,
Maryland 21202.

                  FIFTH: The Resident Agent of the Corporation is CSC-Lawyers
Incorporating Service Company, a Maryland corporation, whose post office address
is 11 East Chase Street, Baltimore, Maryland 21202.

                  SIXTH: The Corporation shall have a Board of Directors,
initially consisting of two (2) Directors, which number may be increased or
decreased in accordance with the By-Laws of the Corporation, but shall never be
less than the number required by Section 2-402 of the Corporation and
Associations Articles of the Amended Code of Maryland, as may be amended from
time to time. The names of the Directors who shall act as such until the first
annual meeting of the Stockholders and until their successors are elected and
qualify are:

                           Michael E. Jalbert
                           Massoud Safavi

                  SEVENTH: The total number of shares of stock which the
Corporation has authority to issue Five Thousand (5,000) shares of common stock,
par value $0.01 per share, all of one class.

                  EIGHTH: In carrying on its business, or for the purpose of
attaining or furthering any of its objects, the Corporation shall have all of
the rights, powers and privileges granted to corporations by the laws of the
State of Maryland, and the power to do any and all acts and things which a
natural person or partnership could do and which may now or hereafter be





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authorized by law, either alone or in partnership or conjunction with others. In
furtherance and not in limitation of the powers conferred by statute, the powers
of the Corporation and of the Directors and Stockholders shall include the
following:

                           (a)      Any Director individually, or any firm of
which any Director may be a member, or any corporation or association of which
any Director may be an officer or director or in which any Director may be
interested as the holder of any amount of its capital stock or otherwise, may be
a party to, or may be pecuniarily or otherwise interested in, any contract or
transaction of the Corporation, and, in the absence of fraud, no contract or
other transaction shall be thereby affected or invalidated, provided that in
case a Director, or firm of which a Director is a member, or a corporation or
association of which a Director is an officer or director or in which a Director
is interested as the holder of any amount of its capital stock or otherwise, is
so interested, such fact shall be disclosed or shall have been known to the
Board of Directors or a majority thereof. Any Director of the Corporation who is
also a Director, or officer of or interested in such other corporation or
association, or who, or the firm of which he is a member, is so interested, may
be counted in determining the existence of a quorom at any meeting of the Board
of Directors of the Corporation which shall authorize any such contract or
transaction, with like force and effect as if he were not such director or
officer of such other corporation or association or were not so interested or
were not a member of a firm so interested.

                           (b)      The Corporation reserves the right, from
time to time, to make any amendment of its Charter, now or hereafter authorized
by law, including any amendment which alters the contract rights, as expressly
set forth in its Charter, of any outstanding stock.

                           (c)      Except as otherwise provided in these
Articles of Incorporation, the Charter or the By-Laws of the Corporation, as
from time to time amended, the business of the Corporation shall be managed by
its Board of Directors, which shall have and may exercise all the powers of the
Corporation except such as are by law, these Articles of Incorporation, the
Charter or By-Laws, conferred upon or reserved to the Stockholders.
Additionally, the Board of Directors of the Corporation is hereby specifically
authorized and empowered from time to time in its discretion:

                                    (1)   To authorize the issuance from time
to time of shares of its stock of any class, whether now or hereafter
authorized, or securities convertible into shares of its stock of any class or
classes, whether now or hereafter authorized, for such consideration as said
Board of Directors may deem advisable, subject to such restrictions or
limitations, if any, as may be set forth in the By-Laws of the Corporation;

                                    (2)   By articles supplementary to these
Articles of Incorporation, to classify or reclassify any unissued shares by
fixing or altering in any one or more aspects, from time to time before issuance
of such shares, the preferences, rights, voting powers, restrictions and
qualifications of, the dividends on, the times and prices of redemption of, and
the conversion rights of such shares.

                  NINTH: No director or officer of the Corporation shall be
liable to the Corporation or its Stockholders for money damages, except (1) to
the extent that it is proved that





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the person actually received improper benefit or profit in money, property or
services, for the amount of the benefit or profit in money, property or services
actually received, or (2) to the extent that a judgment or other final
adjudication adverse to the person is entered in a proceeding based on a finding
in the proceeding that the person's action, or failure to act, was the result of
active and deliberate dishonesty and was material to the cause of action
adjudicated in the proceeding. No director or officer shall be deemed to have
received any improper benefit or profit within the meaning of this Article NINTH
by reason of any payment or distribution to or in respect of the common stock of
the Corporation, which payment or distribution applies or is available equally
to all outstanding shares of common stock of the Corporation.

                  TENTH: No holder of stock of any class shall have any
preemptive right to subscribe to or purchase any additional shares of any class,
or any bonds or convertible securities of any nature; provided, however, that
the Board of Directors may, in authorizing the issuance of stock of any class,
confer any preemptive right that the Board of Directors may deem advisable in
connection with such issuance.

                  ELEVENTH: The Corporation shall indemnify its directors and
officers to the full extent permitted by general corporate laws of the State of
Maryland now or hereafter in force, including the advance of expenses under the
procedures provided by such laws. The foregoing shall not limit the authority of
the Corporation to indemnify other employees and agents consistent with law.

                  IN WITNESS WHEREOF, I have signed these Articles of
Incorporation, and I acknowledge the same to be my act on this 4th day of
August, 1998.



                                                     /s/ William G. Miller
                                                     ---------------------------
                                                     William G. Miller




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                          ARTICLES OF SALE AND TRANSFER

         THESE ARTICLES OF SALE AND TRANSFER (these "Articles") are entered
into this 11th day of August, 1998, by and between ACCELERATION SYSTEMS, INC., a
Maryland corporation ("Transferor"), and MCTI ACQUISITION CORPORATION, a
Maryland corporation ("Transferee").

         THIS IS TO CERTIFY:

         FIRST:   Transferor hereby agrees to sell, assign and transfer
substantially all of its property and assets to Transferee, as hereinafter set
forth.

         SECOND:  The name and place of incorporation of each party to these
Articles are as follows:

                  Transferor is ACCELERATION SYSTEMS, INC., a corporation
organized under the laws of the State of Maryland.

                  Transferee is MCTI ACQUISITION CORPORATION, a corporation
organized under the laws of the State of Maryland.

         THIRD:   The name, address and principal place of business of
Transferee are as follows:

                           MCTI Acquisition Corporation
                           3601 Eisenhower Avenue
                           Alexandria, VA 22304

         FOURTH:  The counties in this State where each corporation has its
principal office and where Transferor has an interest in land are as follows:

                                    Transferor has its principal office in
                           Montgomery County. Transferor has no interest in land
                           in this State.

                                    Transferee has its principal office in
                           Baltimore City. Transferee has no interest in land in
                           this State.

         FIFTH: The terms and conditions of the transaction set forth in these
Articles were advised, authorized and approved by each corporation,
respectively, in the manner and by the vote required by its charter and the laws
of the place where it is organized.

         Transferor, by unanimous written consent of it Board of Directors,
dated August 10, 1998, duly adopted a resolution declaring that the sale,
assignment and transfer of substantially all of the assets of Transferor is
advisable and directing that these Articles and matters be submitted for action
thereon by the stockholders of Transferor, all in the manner and by the vote
required by statute and by the Articles of Incorporation of Transferor. On
August 10, 1998, the stockholders of Transferor, by unanimous written consent
approved the transaction.





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         Transferee, by unanimous written consent of its Board of Directors,
dated August 10, 1998, duly adopted a resolution declaring that the purchase
agreement and transfer affected by these Articles is advisable.

         SIXTH: Transferee shall pay to Transferor the amount of Two Hundred
Seventy-Eight Thousand Dollars ($278,000.00) in cash at the closing, and shall
assume certain liabilities of Transferor, in accordance with the terms of that
certain Stock and Asset Purchase Agreement dated as of August 11, 1998, for the
assets transferred.

         SEVENTH: Each of the undersigned acknowledges these Articles to be the
corporate act of the respective corporate party on whose behalf he has signed,
and further, as to all matters or facts required to be verified under oath, each
of the undersigned acknowledges that to the best of his knowledge, information
and belief, these matters and facts relating to the corporation on whose behalf
he has signed are true in all material respects and that this statement is made
under the penalties for perjury.


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         IN WITNESS WHEREOF, each of the parties hereto have caused these
Articles to be signed and acknowledged in the name of, and on behalf of the
Transferor and Transferee hereto, as of the date first written above.



                                            TRANSFEROR:

ATTEST:                                     ACCELERATION SYSTEMS, INC.,
                                              a Maryland corporation



By: /s/ Gary Gallupe                        By: /s/
    --------------------------                  -------------------------------
Name:  Gary Gallupe                         Name:
Title: Secretary                            Title:   Vice President



[Corporate Seal]



                                            TRANSFEREE

ATTEST:                                     MCTI ACQUISITION CORPORATION,
                                              a Maryland corporation



By: /s/ G. Higgins                          By: /s/ Massoud Safavi
    --------------------------                  -------------------------------
Name:  G. Higgins                           Name:
Title: Corporate                            Title:   Treasurer



[Corporate Seal]