Exhibit 4.2(a)

                       AMENDMENT NO. 2 TO RIGHTS AGREEMENT

     AMENDMENT NO. 1, dated as of December 8, 2006 (the "Amendment"), to the
Rights Agreement dated as of December 11, 1996, as previously amended on
November 15, 2004 (the "Rights Agreement"), between Belden CDT INC., a Delaware
corporation formerly known as Cable Design Technologies Corporation (the
"Company"), and Computershare Trust Company, N.A., successor to The First
National Bank of Boston (the "Rights Agent").

                                   WITNESSETH

     WHEREAS, the Company and the Rights Agent have heretofore executed and
entered into the Rights Agreement; and

     WHEREAS, pursuant to Section 26 of the Rights Agreement, the Company and
the Rights Agent may from time to time supplement or amend any provision of the
Rights Agreement.

     NOW THEREFORE, in consideration of good and valuable consideration, the
receipt and sufficiency of which are herby acknowledged, the parties hereto
agree as follows:

1.   The Rights Agreement and the exhibits thereto are amended as follows:

     (a)(i) The name of the Company is amended to be "Belden CDT Inc." in order
to reflect the change of the Company's name, (ii) the name of the Rights Agent
is amended to be "Computershare Trust Company, N.A.," which is the successor to
The First National Bank of Boston, and (iii) references to the foregoing in the
Rights Agreement and the exhibits thereto are correspondingly amended.

     (b) Section 1(o) is amended by deleting the text thereof and substituting
the following in lieu thereof:

          (o) "Exempt Person" means (i) the Company, (ii) any Subsidiary of the
     Company, (iii) any employee benefit plan of the Company or of any
     Subsidiary of the Company, and (iv) any Person holding Common Stock for any
     such employee benefit plan or for employees of the Company or of any
     Subsidiary of the Company pursuant to the terms of any such employee
     benefit plan.

     (c) Section 1(p) is amended by deleting the text thereof and substituting
the following in lieu thereof:

          (p) "Expiration Date" means the Close of Business on December 9, 2016.

     (d) Section 1(q) is amended by deleting the text thereof and substituting
the word "Reserved" in lieu thereof.



     (e) Section 1(r) is amended by deleting the text thereof and substituting
the following in lieu thereof:

          (r) "NASDAQ" means the NASDAQ Global Select Market.

     (f) Section 1(t) is amended by deleting the text thereof and substituting
the following in lieu thereof:

          (t) "Preferred Stock" means the Company's Junior Participating
     Preferred Stock, Series A, par value $0.01 per share, having the rights and
     preferences set forth in the Certificate of Designation, Preferences and
     Rights of Junior Participating Preferred Stock, Series A, attached hereto
     as Exhibit A.

     (g) Section 1(v) is amended by deleting the text thereof and substituting
the following in lieu thereof:

          (v) "Purchase Price" with respect to each Right is initially being
     reestablished at $150.00 per one one-thousandth of a share of Preferred
     Stock, shall be subject to adjustment from time to time as provided in
     Sections 11 and 13, and shall be payable in lawful money of the United
     States of America in cash or by certified check or bank draft payable to
     the order of the Company.

     (h) Section 25 is amended by deleting the text thereof and substituting the
following in lieu thereof:

          SECTION 25. NOTICES. Notices or demands authorized by this Agreement
     to be given or made by the Rights Agent or by the holder of any Rights
     Certificate to or on the Company shall be sufficiently given or made if
     sent by first-class mail, postage prepaid, addressed (until another address
     is filed in writing with the Rights Agent) as follows:

                         Belden CDT Inc.
                         7701 Forsyth Boulevard, Suite 800
                         St. Louis, Missouri 63105
                         Attention: General Counsel

     Subject to the provisions of Section 21, any notice or demand authorized by
     this Agreement to be given or made by the Company or by the holder of any
     Rights Certificate to or on the Rights Agent shall be sufficiently given or
     made if sent by first-class mail, postage prepaid, addressed (until another
     address is filed in writing with the Company) as follows:

                         Computershare Trust Company, N.A.
                         250 Royall Street
                         Canton, Massachusetts 02021
                         Attention: Client Administration


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     Notices or demands authorized by this Agreement to be given or made by the
     Company or the Rights Agent to the holder of any Rights Certificate shall
     be sufficiently given or made if sent by first-class mail, postage prepaid,
     addressed to such holder at the address of such holder as shown on the
     registry books of the Company (or, if no Rights Certificates have been
     issued, if sent by first-class mail, postage prepaid, addressed to each
     holder of a certificate representing shares of Common Stock at the address
     of such holder as shown on the Company's Common Stock registry books).

     (i) Section 11 is amended by inserting the following as a new second
sentence thereof:

     Notwithstanding the foregoing, no adjustments to the Purchase Price
     pursuant to this Section 11 shall be made for the occurrence of any event
     which occurred prior to November 30, 2006, that otherwise would have
     required an adjustment to the Purchase Price pursuant to this Section 11.

     (j) Section 20 is amended by inserting the following at the end thereof:

          (k) Notwithstanding anything to the contrary contained herein, the
     Rights Agent shall not be liable for any delays or failures in performance
     resulting from acts beyond its reasonable control including, without
     limitation, acts of God, terrorist acts, shortage of supply, breakdowns or
     malfunctions, interruptions or malfunction of computer facilities, or loss
     of data due to power failures or mechanical difficulties with information
     storage or retrieval systems, labor difficulties, war, or civil unrest.

     (k) Section 21 is amended by inserting the following sentence after the
first sentence thereof:

     In the event the transfer agency relationship in effect between the Company
     and the Rights Agent terminates, the Rights Agent will be deemed to resign
     automatically on the effective date of such termination; and any required
     notice will be sent by the Company.

     (l) The contents of Section 28 shall be renumbered as Subsection (a) and a
new Subsection (b) is inserted in Section 28 that reads as follows:

          (b) It is understood that the TIDE Committee (as defined below) of the
     Board of Directors shall review and evaluate this Agreement in order to
     consider whether the maintenance of this Agreement continues to be in the
     interests of the Company, its shareholders and any other relevant
     constituencies of the Company, at least every three years, or sooner if any
     Person shall have made a proposal to the Company, or taken any other
     action, that, if effective, could cause such Person to become an Acquiring
     Person hereunder, if a majority of the members of the TIDE Committee shall
     deem such review and evaluation appropriate after giving due regard to all
     relevant circumstances. Following each such review, the TIDE Committee will
     communicate its conclusions to the full Board of Directors, including any
     recommendation in light thereof as to whether


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     this Agreement should be modified or the Rights should be redeemed. "TIDE
     Committee" shall mean the Nominating and Corporate Governance Committee of
     the Board of Directors of the Company or such other committee appointed by
     the Board of Directors of the Company to fulfill the foregoing duties and
     in either event shall be comprised of members of the Board of Directors who
     are independent under the listing standards of Nasdaq, or any other
     national securities exchange on which the Common Stock is listed, and who
     is not an Acquiring Person, or an Affiliate or Associate of an Acquiring
     Person, or a representative of an Acquiring Person, or of any such
     Affiliate or Associate; provided, however, that a Person is nominated for
     election as a director by an Acquiring Person or any such Affiliate,
     Associate or representative, or the fact that an Acquiring Person or any
     such Affiliate, Associate or representative votes in favor of the election
     of a Person as a director, shall not, in and of itself, disqualify a Person
     from being independent provided that such Person does not have any
     agreement or understanding with such Acquiring Person, Affiliate, Associate
     or representative with respect to how such Person will vote on any future
     transaction.

     (m) Exhibits B and C to the Rights Agreement is amended as follows:

          (i) All references to the date "December 11, 2006" are deleted and
     replaced with the date "December 9, 2016."

          (ii) All references to the Purchase Price of "$150 " are deleted and
     replaced with a reestablished Purchase Price of "$150."

2.   Except as amended hereby, the Rights Agreement shall remain in full force
     and effect.

3.   This Amendment shall be governed by Sections 29 through 33 of the Rights
     Agreement.

     IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the
date first written above.

                                        BELDEN CDT INC.


                                        By: /s/ Kevin Bloomfield
                                            ------------------------------------
                                        Name: Kevin Bloomfield
                                        Title: Vice President, Secretary and
                                        General Counsel


                                        COMPUTERSHARE TRUST COMPANY, N.A.


                                        By: /s/ Carol Mulvey-Eori
                                            ------------------------------------
                                        Name: Carol Mulvey-Eori
                                        Title: Managing Director


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