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IPR Details
AT&T Corp.'s statement about IPR claimed in RFC 4123

Submitted: November 28, 2006 under the rules in RFC 3979.

Note: Updates to IPR disclosures must only be made by authorized representatives of the original submitters. Updates will automatically be forwarded to the current Patent Holder's Contact and to the Submitter of the original IPR disclosure.

I. Patent Holder/Applicant ("Patent Holder")

Holder legal name AT&T Corp.

II. Patent Holder's Contact for License Application

Holder contact name Charles Scott
Holder contact email
Holder contact info

Associate Director of Operations
AT&T Knowledge Ventures
6500 River Place Blvd, Building 3
Austin, TX 78730
T: (512) 527-1358
F: (512) 527-1209

III. IETF Document or Other Contribution to Which this IPR Disclosure Relates

RFC4123 ("Session Initiation Protocol (SIP)-H.323 Interworking Requirements")

IV. Disclosure of Patent Information
i.e., patents or patent applications required to be disclosed by RFC 3979

A. For granted patents or published pending patent applications, please provide the following information:

Patent, Serial, Publication, Registration, or Application/File number(s)

Patent 7,002,989
Date: Feb. 21, 2006
Country: USA

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending No

V. Licensing Declaration

The Patent Holder states that its position with respect to licensing any patent claims contained in the patent(s) or patent application(s) disclosed above that would necessarily be infringed by implementation of the technology required by the relevant IETF specification ("Necessary Patent Claims"), for the purpose of implementing such specification, is as follows(select one licensing declaration option only):

Licensing See Text Below for Licensing Declaration
Licensing information, comments, notes, or URL for further information

AT&T is willing to grant a non-exclusive, reasonable and
non-discriminatory license to implementers of this RFC, to the extent
the patented technology is required for implementation, where reciprocal
rights are granted to AT&T.

Note: The individual submitting this template represents and warrants that he or she is authorized by the Patent Holder to agree to the above-selected licensing declaration.

VI. Contact Information of Submitter of this Form

Submitter name Bill Fenner
Submitter email

Only those sections of the relevant entry form where the submitter provided information are displayed above.