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                                                        Exhibit 10(c), Form 10-Q
                                                        For The Quarter Ended
                                                        March 31, 1996
                                                        Fiscal Year Ending
                                                        December 31, 1996
                                                        File No. 1-11237

                            Lucent Technologies Inc.
                               600 Mountain Avenue
                              Murray Hill, NJ 07974

                                  April 2, 1996


AT&T Capital Corporation
44 Whippany Road
Morristown, New Jersey 07960

AT&T Corp.
295 North Maple Avenue
Basking Ridge, NJ 07920

RE:  Applicability of Intercompany Agreement
     to Lucent Technologies Inc.

Ladies and Gentlemen:

         This  letter is  written in  response  to the  request of AT&T  Capital
Corporation  ("Capital)  to Lucent  Technologies  Inc.  ("Lucent")  that  Lucent
confirm that it agrees to be a party to the applicable terms of the Intercompany
Agreement (the "Intercompany  Agreement") dated as of June 25, 1993 between AT&T
Corp.  (formerly named American  Telephone and Telegraph  Company)  ("AT&T") and
Capital,  following  the  proposed  initial  public  offering of common stock of
Lucent (the "IPO") and the proposed  spin-off  thereafter of AT&T's  interest in
Lucent to its stockholders (the "Distribution").

         Lucent agrees that, following the IPO and the Distribution,  it will be
a party  to,  and  will be bound by and have  the  benefits  of,  the  following
provisions  of the  Intercompany  Agreement as and to the extent it is currently
bound  thereunder  as an AT&T  Entity:  Articles I, III, V (to the extent,  with
respect to Articles III and V, that any portion of the Lease  Finance  Portfolio
and the SLG Portfolio (as such terms are defined in the Intercompany  Agreement)
administered  by Capital under the  Intercompany  Agreement are  transferred  to
Lucent or any of its Subsidiaries),  VII, XI, XII, XIII, XIV and XV (pursuant to
which Lucent will guarantee the  obligations of its  Subsidiaries)  and Sections
6.2 (only until the Distribution, in the case of such Section 6.2), 6.3 and 9.2.
It is understood  that the provisions of Articles II, IV, VIII and X and Section
6.1 of the Intercompany Agreement do not apply to Lucent and will not be binding
on Lucent  following  the IPO. In addition,  Capital  agrees (for the benefit of
AT&T  as  well  as  Lucent)  that,  although  Section  15.1  shall  survive  the
Distribution (including with respect to Lucent and its Subsidiaries prior to the
Distribution),  following the Distribution Lucent will no longer be deemed to be
an AT&T Entity within the meaning of the Intercompany  Agreement,  and AT&T will
have no  liability  to Capital for  obligations  of Lucent and its  Subsidiaries
arising after the Distribution.






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         Except as set forth  herein,  this letter shall not  augment,  limit or
otherwise  affect  the  rights  or  obligations  (including  without  limitation
termination rights) of the parties under the Intercompany Agreement.

         If you are in agreement  with the  foregoing,  please sign in the space
provided  below,  whereupon  this letter  will  constitute  a binding  agreement
between Lucent and Capital.

                                            Yours sincerely,


                                            Lucent Technologies Inc.


                                            By:Richard J. Rawson
                                               -----------------
                                               Richard J. Rawson
                                               Senior Vice President
                                               and General Counsel



Agreed and accepted:

AT&T Corp.


By:Marilyn J. Wasser
   -----------------
   Marilyn J. Wasser
   Vice President-Law
   and Secretary



AT&T Capital Corporation


By: Thomas C. Wajnert
    -----------------
    Thomas C. Wajnert
    Chairman of the Board & CEO