Title: Nortel Network's Statement about IPR Claimed in RFC 3525 Received: October 21, 2003 From: Kevin-LAW Smith This is to advise the IETF that Nortel Networks has patents and/or patent applications that may be considered essential to RFC 3525, Gateway Control Protocol (rfc3525.txt), before the Megaco Working Group. Specifically: 6,385,196 / US, Communication System Architecture and a Management Control Agent and Operating Protocol Therefore 742,135 / AU, Communication System Architecture and a Management Control Agent and Operating Protocol Therefore 99/31926 / WO, Communication System Architecture and a Management Control Agent and Operating Protocol Therefore 1 040 703 / EP, Communication System Architecture and a Management Control Agent and Operating Protocol Therefore Where there is a necessary dependence upon such patents and/or patent applications in implementing this or other IETF standards document of the Megaco Working Group, Nortel Networks is willing to make available non-exclusive licenses on fair, reasonable, reciprocal, and non-discriminatory terms and conditions, to such patent rights it owns, solely to the extent such rights are essential to comply with such IETF standard. Requests may be addressed to: Richard Weiss Nortel Networks 2221 Lakeside Boulevard, M/S 991/14/B20 Richardson, Texas 75082 USA weissr@nortelnetworks.com