Document:

<PAGE>
                                                                    Exhibit 4.38

                                 AMENDMENT NO. 2

THIS AMENDMENT is made September 20, 2004 among:

     MARCH NETWORKS CORPORATION, a Canadian business corporation having
     its offices at Tower B, 555 Legget Drive, Ottawa, ON K2K 2X3 ("MARCH
     NETWORKS")

-and-

     MITEL NETWORKS CORPORATION, a Canadian business corporation having its
     offices at 350 Legget Drive, Ottawa, ON K2K 2W7 ("MITEL NETWORKS")

-and-

     MITEL NETWORKS INTERNATIONAL LIMITED, a Barbadian business corporation
     having its offices at Charnic Business Centre, Spring Garden Highway, St.
     Michael, Barbados ("MNIL")

-and-

     MITEL NETWORKS LIMITED, a UK business corporation having its offices at
     Mitel Business Park, Portskewett, Caldicott, UK NPZ6 5YR ("MNL")

WHEREAS:

     A.   March Networks, Mitel Networks, MNIL and MNL entered into an alliance
          agreement effective as of September 21, 2001, as amended on September
          20, 2003 (the "Alliance Agreement").

     B.   Pursuant to Section 9.1 of the Alliance Agreement, the parties wish to
          renew the Alliance Agreement on the same terms and conditions for an
          additional six month term expiring on March 31, 2005.

NOW THEREFORE for good and valuable consideration, the receipt and sufficiency
of which is hereby acknowledged, the parties to this Amendment hereby agree as
follows:

1.   The term of the Alliance Agreement is hereby extended for an additional six
     month term, expiring March 31, 2005.
<PAGE>
2.   All terms and conditions of the Alliance Agreement to remain the same.

IN WITNESS WHEREOF the parties hereto have caused this Amendment to be signed by
their duly authorized representatives as of the date written above.

MITEL NETWORKS CORPORATION              MARCH NETWORKS CORPORATION

BY: /s/ DON SMITH                       BY: /s/ Peter Strom
    ---------------------------------       ------------------------------------
NAME: DON SMITH                         NAME: Peter Strom
TITLE: CEO                              TITLE: President & CEO

MITEL NETWORKS INTERNATIONAL LIMITED    MITEL NETWORKS LIMITED

BY: /s/ PAUL BUTCHER                    BY: /s/ PAUL BUTCHER
    ---------------------------------       ------------------------------------
NAME: PAUL BUTCHER                      NAME: PAUL BUTCHER
TITLE: PRESIDENT                        TITLE: PRESIDENT

                                       2<PAGE>
                                                                    Exhibit 4.41

(TECHNOLOGY PARTNERSHIPS CANADA LOGO)           TARTENARIAT TECHNOLOGIQUE CANADA

An Agency of Industry Canada                    Un organlsme d'Industrie Canada

                                                      TPC PROJECT NO. 720-481443
                                                                 AMENDMENT NO. 2

                         TECHNOLOGY PARTNERSHIPS CANADA

                               AMENDMENT AGREEMENT

THIS AGREEMENT made

BETWEEN: HER MAJESTY THE QUEEN IN RIGHT OF CANADA,
         as represented by the Minister of Industry
         (hereinafter referred to as the "MINISTER")

AND:     MARCH NETWORKS CORPORATION
         (hereinafter referred to as "a PROPONENT" or "MARCH NETWORKS").

AND:     MITEL NETWORKS CORPORATION
         (hereinafter referred to as "a PROPONENT" or "MITEL NETWORKS")

AND:     MITEL KNOWLEDGE CORPORATION
         (hereinafter referred to as "a PROPONENT" or "MITEL KNOWLEDGE")

Collectively referred to as "the PROPONENTS".

INTRODUCTION

(i)  The Minister and the Proponents entered into a Contribution Agreement dated
     the 10th day of October, 2002 under the Technology Partnerships Canada
     Program (the "Contribution Agreement"); and

(ii) The Contribution Agreement was amended by letter dated March 27, 2003, now
     called Amendment Number 1; and

(iii) The Minister and the Proponents now wish to amend the Contribution
     Agreement.

IN CONSIDERATION OF THEIR RESPECTIVE OBLIGATIONS SET OUT IN THE CONTRIBUTION
AGREEMENT, THE PARTIES AGREE TO AMEND THE CONTRIBUTION AGREEMENT AS FOLLOWS:

(CANADA LOGO)                                                          (GRAPHIC)

<PAGE>

                                                                          Page 2

1.   This Amendment must be signed by the Recipient and received by the Minister
     within thirty (30) days of its signature on behalf of the Minister, failing
     which it will be null and void.

2.   In Article 3.2:

     DELETE:  the date "September 30th, 2004"; and
     REPLACE: with the date "March 31st, 2005".

3.   In Article 4.3:

     DELETE:  the Fiscal Year Contribution amounts in their entirety; and
     REPLACE: with the following Fiscal Year Contribution amounts:

4.   In Article 7.2:

     DELETE:  the name "Dr. Donald Mills" and the title "Chief Operating
              Officer" for March Networks Corporation, and
     REPLACE: with the name "Peter Strom" and the title "President and Chief
              Executive Officer".

5.   In Article 8.1:

     DELETE:  the date "September 30th, 2004"; and
     REPLACE: with the date "March 31st, 2005".

6.   In Schedule 8, Article 4.8:

     DELETE:  the name "Dr. Donald Mills" and the title "Chief Operating
              Officer" for March Networks Corporation, and
     REPLACE: with the name "Peter Strom" and the title "President and Chief
              Executive Officer".

<PAGE>

                                                                          Page 3

IN WITNESS WHEREOF the parties hereto have executed this Amendment Agreement
through duly authorized representatives.

HER MAJESTY THE QUEEN IN RIGHT
OF CANADA, as represented by the Minister of Industry

Per: /s/ Denise Cuevremont              Apr. 27, 2004
     -------------------------------    Date
     Technology Parterships Canada

     DENISE CUEVREMONT - DIRECTOR
     Name & Title

MARCH NETWORKS CORPORATION]

Per: /s/ Peter Strom                    May 02, 2004
     -------------------------------    Date
     Peter Strom President/CEO
     Name & Title

MITEL NETWORKS CORPORATION]

Per: /s/ Don Smith                      29 April, 2004
     -------------------------------    Date
     DON SMITH, CEO
     Name & Title

MITEL KNOWLEDGE CORPORATION]

Per: /s/ Jose Medeiros                  April 30, 2004
     -------------------------------    Date
     JOSE MEDEIROS, CFO
     Name & Title

<PAGE>

(TECHNOLOGY PARTNERSHIPS CANADA LOGO)           PARTENARIAT TECHNOLOGIQUE CANADA

An Agency of Industry Canada                    Un organisms d'lndustrie Canada

                                                      TPC PROJECT NO. 720-481443
                                                                  AMENDMENT NO.3

                         TECHNOLOGY PARTNERSHIPS CANADA

                               AMENDMENT AGREEMENT

THIS AGREEMENT made

Between: HER MAJESTY THE QUEEN IN RIGHT OF CANADA, as represented by the
         Minister of Industry (hereinafter referred to as the "Minister")

And:     MARCH NETWORKS CORPORATION, a corporation duly incorporated under the
         laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "a PROPONENT" or "MARCH NETWORKS").

And:     MITEL NETWORKS CORPORATION, a corporation duly incorporated under the
         laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "a PROPONENT" or "MITEL NETWORKS").

And      MITEL KNOWLEDGE CORPORATION
         (hereinafter referred to as "a PROPONENT" or "MITEL KNOWLEDGE")

Collectively referred to as the PROPONENTS.

WHEREAS:

1.   The Minister and the Proponents entered into a Contribution Agreement dated
     the 10th day of October, 2002 pursuant to the Technology Partnerships
     Canada Program (the "Contribution Agreement"); and

2.   The Contribution Agreement was amended by letter dated March 27, 2003
     entitled Amendment Number 1; and

3.   Amendment Number 2 executed on April 27, 2004 further amended the
     Contribution Agreement, and

4.   Mitel Knowledge has pursuant to subsection 211 (4) of the Canada Business
     Corporations Act provided a Statement of Intent to Dissolve Mitel Knowledge

(CANADA LOGO)                                                          (GRAPHIC)

<PAGE>

                                        2

     Corporation to the Director under this Act. This Amendment Agreement is
     contingent upon the receipt by Mitel Knowledge of a Certificate of intent
     to dissolve pursuant to subsection 211(5) and section 262 of the Canada
     Business Corporations Act and remittance of same to the Minister as
     evidence that it has been dissolved.

5.   Mitel Knowledge has requested and the Minister has agreed following
     completion of an extensive case review to delete Mitel Knowledge as a
     Proponent to this Contribution Agreement pending receipt of the certificate
     of dissolution. Therefore, in consideration of their respective obligations
     set out in the Contribution Agreement the Minister and the Proponents now
     wish to further amend the Contribution Agreement.

THEREFORE, the Parties agree as follows:

1.   The above preamble is part of this Amendment Agreement (the "Agreement").

2.   Unless the context dictates otherwise, words and phrases defined in the
     Contribution Agreement have the same meaning in this Agreement

3.   PAGE 1 delete:

     "And: MITEL KNOWLEDGE CORPORATION, a corporation duly incorporated under
           the laws of Canada, having its head office located at Ottawa, Ontario
           (hereinafter referred to as "a PROPONENT" or "MITEL KNOWLEDGE")."

4.   ARTICLE 4.3 delete and replace with the following:

     4.3  Unless the Minister agrees otherwise in writing, and subject to the
          overall limit stipulated in section 4.1 above, the amount of the
          Contribution will not exceed the following amounts in the relevant
          Fiscal Years of the Project as follows:

     The Minister will consider any request to reprofile these funds, but the
     Minister will have no obligation to pay any greater amount in any of the
     said Fiscal Years except to the extent that such reprofiling will have been
     agreed to by the Minister.

<PAGE>

                                        3

4.   ARTICLE 7.2 delete address for Mitel Knowledge Corporation

     "Jose Madeiros"
      Chief financial Officer
      Mitel Knowledge Corporation
      555 Legged drive-Tower B
      Suite 534
      Ottawa, Ontario K2K 2X3"

6.    ARTICLE 8.15 delete in its entirety.

All provisions of the Contribution Agreement remain in full force and effect,
except as modified by this Amendment Agreement which will enter into force upon
receipt by the Minister of the Certificate of Dissolution issued by the
Director of Corporations to Mitel Knowledge.
<PAGE>

                                        4

IN WITNESS WHEREOF the parties hereto have executed this Amendment Agreement
through duly authorized representatives.

HER MAJESTY THE QUEEN IN RIGHT
OF CANADA, as represented by the Minister of Industry

Per: /s/ Denise Guevremont              Sept 9, 2004
     --------------------------------   Date
     Technology Partnerships Canada

Denise Guevremont, Director, Enabling Technologies Directorate

MARCH NETWORKS CORPORATION

Per: /s/ Peter Strom                    Sept 14, 04
     --------------------------------   Date
     Peter Strom President & CEO
     Name & Title

MITEL NETWORKS CORPORATION

Per: /s/ DON SMITH                      Sept 16, 04
     --------------------------------   Date
     DON SMITH CEO
     Name & Title

MITEL KNOWLEDGE CORPORATION

Per: /s/ JOSE MEDEIROS                  Sept 10, 2004
     --------------------------------   Date
     JOSE MEDEIROS CFO
     Name & Title

<PAGE>

(TECHNOLOGY PARTNERSHIPS CANADA LOGO)           PARTENARIAT TECHNOLOGIQUE CANADA

An Agency of Industry Canada                    Un organisme d'lndustrie Canada

                                                      TPC PROJECT NO. 720-481443
                                                                  AMENDMENT NO.4

                         TECHNOLOGY PARTNERSHIPS CANADA

                               AMENDMENT AGREEMENT

THIS AGREEMENT MADE

Between: HER MAJESTY THE QUEEN IN RIGHT OF CANADA,
         as represented by the Minister of Industry
         (hereinafter referred to as the "Minister")

And:     MARCH NETWORKS CORPORATION, a corporation duly incorporated under the
         laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "the Proponent" or "March Networks").

And:     MITEL NETWORKS CORPORATION, a corporation duly incorporated under
         the laws of Canada, having its head office located at Ottawa,
         Ontario (hereinafter referred to as "the Proponent" or "Mitel
         Networks").

And:     MARCH HEALTHCARE CORPORATION, a corporation duly incorporated under
         the laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "the Proponent" or "March Healthcare").

         Collectively referred to as the PROPONENTS, and acting herein as
         joint and several.

INTRODUCTION

1.   The Minister, March Networks, Mitel Networks and Mitel Knowledge
     Corporation entered into a Contribution Agreement dated the 10th day of
     October, 2002 under the Technology Partnerships Canada Program (the
     "Contribution Agreement"); and

2.   The Contribution Agreement was amended by letter dated March 27, 2003
     entitled Amendment Number 1; and

3.   Amendment Number 2 executed on April 27, 2004 further amended the
     Contribution Agreement, and

4.   Amendment Number 3 executed on September 9, 2004 further amended the
     Contribution

(CANADA LOGO)                                                          (GRAPHIC)

<PAGE>

                                        2

     Agreement, and

5.   March Networks has requested and the Minister has agreed to insert March
     Healthcare as a Proponent, to this Contribution Agreement.

IN CONSIDERATION OF THEIR RESPECTIVE OBLIGATIONS SET OUT IN THE CONTRIBUTION
AGREEMENT, THE PARTIES AGREE TO AMEND THE CONTRIBUTION AGREEMENT AS FOLLOWS:

1.   At PAGE 1, insert:

     "And: MARCH HEALTHCARE CORPORATION, a corporation duly incorporated under
          the laws of Canada, having its head office located at Ottawa, Ontario
          (hereinafter referred to as "the Proponent" or "March Healthcare")."

2.   At ARTICLE 7.2, insert:

     Christine Cimaglia,
     Chief Operating Officer
     March Healthcare Corporation
     555 Legget Drive - Tower B
     Ottawa, Ontario K2K 2X3

     Fax: (613) 591-7337

3.   At Page 6, insert new ARTICLE 8.3.4

     "The Minister consents to the transfer of all Intellectual Property related
     to the March Networks tele-health solution be transferred to March
     Healthcare, effective as of the effective date of this Amendment Agreement
     No. 4 since March Healthcare is now one of the Proponents under this
     Agreement. The parties agree that March Healthcare will be responsible for
     its compliance with the terms and conditions of the Contribution Agreement
     for that portion of the Project that relates to the tele-health solution."

ALL PROVISIONS OF THE CONTRIBUTION AGREEMENT REMAIN IN FULL FORCE AND EFFECT,
EXCEPT AS MODIFIED BY THIS AMENDMENT AGREEMENT.

<PAGE>

                                       3

IN WITNESS WHEREOF the parties hereto have executed this Amendment Agreement
through duly authorized representatives.

HER MAJESTY THE QUEEN IN RIGHT
OF CANADA, as represented by the Minister of Industry

Per: /s/ Kash Ram                                2005-06-15
     -----------------------------------------   Date
     Technology Partnerships Canada

     KASH RAM, DIRECTOR, ENABLING TECHNOLOGIES
     Name & Title

MARCH NETWORKS CORPORATION

Per: /s/ Ken Taylor
     -----------------------------------------   2005-06-23
     KEN TAYLOR, CFO                             Date
     Name & Title

MITEL NETWORKS CORPORATION

Per: /s/ Don Smith
     -----------------------------------------   27 JUNE 05
     DON SMITH, CEO                              Date
     Name & Title

MARCH HEALTHCARE CORPORATION

Per: /s/ Christine Cimaglia
     -----------------------------------------   June 20/05
     CHRISTINE CIMAGLIA, COO                     Date
     Name & Title

<PAGE>

(TECHNOLOGY PARTNERSHIPS CANADA LOGO)           PARTENARIAT TECHNOLOGIQUE CANADA

An Agency of Industry Canada                    Un organisme d'Industrie Canada

                                                      TPC PROJECT NO. 720-481443
                                                                 AMENDMENT NO. 5

                         TECHNOLOGY PARTNERSHIPS CANADA

                               AMENDMENT AGREEMENT

THIS AGREEMENT MADE

Between: HER MAJESTY THE QUEEN IN RIGHT OF CANADA, as represented by the
         Minister of Industry (hereinafter referred to as the "Minister")

And:     MARCH NETWORKS CORPORATION, a corporation duly incorporated under the
         laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "the Proponent" or "March Networks").

And:     MITEL NETWORKS CORPORATION, a corporation duly incorporated under the
         laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "the Proponent" or "Mitel Networks").

And:     MARCH HEALTHCARE CORPORATION, a corporation duly incorporated under
         the laws of Canada, having its head office located at Ottawa, Ontario
         (hereinafter referred to as "the Proponent" or "March Healthcare").

         Collectively referred to as the PROPONENTS, and acting herein as
         joint and several.

INTRODUCTION

1.   The Minister, March Networks, Mitel Networks and Mitel Knowledge
     Corporation entered into a Contribution Agreement dated the 10th day of
     October, 2002 under the Technology Partnerships Canada Program (the
     "Contribution Agreement"); and

2.   The Contribution Agreement was amended by letter dated March 27, 2003
     entitled Amendment Number 1; and

3.   Amendment Number 2 executed on April 27, 2004 further amended the
     Contribution Agreement, and

(CANADA LOGO)                                                          (GRAPHIC)

<PAGE>

                                       2

4.   Amendment Number 3 executed on September 9, 2004 further amended the
     Contribution Agreement, and

5.   Amendment Number 4 executed on June 27, 2005 further amended the
     Contribution Agreement, and

6.   The Minister and the Proponent now wish to amend the Contribution
     Agreement.

IN CONSIDERATION OF THEIR RESPECTIVE OBLIGATIONS SET OUT IN THE CONTRIBUTION
AGREEMENT, THE PARTIES AGREE TO AMEND THE CONTRIBUTION AGREEMENT AS FOLLOWS:

1.   At Article 8, entitled "Special Conditions":

DELETE:

AND SUBSTITUTE WITH THE FOLLOWING:

<PAGE>

                                        3

ALL PROVISIONS OF THE CONTRIBUTION AGREEMENT REMAIN IN FULL FORCE AND EFFECT,
EXCEPT AS MODIFIED BY THIS AMENDMENT AGREEMENT.

IN WITNESS WHEREOF the parties hereto have executed this Amendment Agreement
through duly authorized representatives.

HER MAJESTY THE QUEEN IN RIGHT
OF CANADA, as represented by the Minister of Industry

Per: /s/ Linda Dunn                                   Sept. 26/05
     ----------------------------------------------   Date
     Technology Partnerships Canada

     Linda Dunn, A/Director - Enabling Technologies

MARCH NETWORKS CORPORATION

Per: /s/ Peter Strom                                  Oct 1, 05
     ----------------------------------------------   Date
     Peter Strom
     President & CEO
     Name & Title

MITEL NETWORKS CORPORATION

Per: /s/ Steve Spooner                                9/30/05
     ----------------------------------------------   Date
     Steve Spooner
     CFO
     Name & Title

<PAGE>

                                        4

MARCH HEALTHCARE CORPORATION

Per: /s/ CHRISTINE CIMAGLIA                           3 OCT 05
     ----------------------------------------------   Date
     CHRISTINE CIMAGLIA, COO
     Name & Title

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