Received May 12, 2000 From: Roy Mills ===== This letter affirms Nortel Networks Corporation (Nortel Networks) position with respect to patents associated with IETF standards. Individuals employed by Nortel Networks are involved periodically in various working groups of the IETF. As a backdrop to any and all such activities, and in accordance with RFC 2026, Nortel Networks wishes to make the following statement: "Nortel Networks may seek patent protection on technology described in a document which Nortel Networks contributes for use in IETF standards discussions. In relation to any IETF standard incorporating any such technology, Nortel Networks hereby agrees to license on fair, reasonable, reciprocal and non-discriminatory terms, any patent claims it owns covering such technology, solely to the extent such technology is essential to comply with such standard." Any questions related to this statement may be addressed to: Gib Ritenour Director, Technical Standards and Patent Strategy Nortel Networks 2100 Lakeside Blvd Richardson, Texas 75082 Phone: (972) 684-5340 Fax: (972) 684-3093 email: gibr@nortelnetworks.com