Received June 14, 2001 From: "Frost, Thomas F (Tom), ALCOO" This declaration is being made pursuant to the provisions of IETF IPR Policy, Sections 10.3.1 and 10.3.2. This is to advise the IETF that AT&T believes it owns intellectual property that may relate to Internet Draft document " draft-rosen-rfc2547bis-03.txt", including United States Patent No. 6,081,524. To the extent that the technology discussed in this Internet Draft becomes an IETF Standard, and to the extent claims of AT&T's patents are required to implement the IETF Standard, AT&T agrees that, upon written request, AT&T will offer, on a nondiscriminatory basis, non-exclusive licenses on fair and reasonable terms under such patent claims to implement that IETF Standard. AT&T's willingness to grant such licenses is conditioned upon the prospective licensee granting a reciprocal license to AT&T under any patents that the prospective licensee has to any technology required to implement that IETF Standard. Written requests for licenses may be sent to: AT&T Intellectual Property Licensing Room 2E37, Bldg. 104 180 Park Avenue Florham Park, NJ 07932