Received December 28, 2000 From: Douglas Ranalli Individuals employed by NetNumber.com are involved periodically in the Telephone Number Mapping (enum), and the Voice Profile for Internet Mail (vpim) working groups of the IETF. In this context, NetNumber makes the following statement in accordance with Section 10 of IETF RFC 2026 NetNumber has patents and patents pending that are related to the implementation of telephone number to IP mapping protocol standards and/or Internet voice messaging protocol standards. See http://www.netnumber.com/intellectual.html for more information on NetNumber's intellectual property position. If part(s) of a contribution by NetNumber is (are) included in a Telephone Number Mapping (enum) protocol standard or a Voice Profile for Internet Mail (vpim) protocol standard and NetNumber has patents that are essential to implementation of that standard, NetNumber is prepared to grant, only to the extent essential to implement the standard and subject to reciprocity of the licensed party (grantback), a license to the included part(s) on reasonable, non-discriminatory terms and conditions. This grant immediately cancels to any party asserting rights against NetNumber for a method(s) described in any IETF standard. Any party wishing to request a license should contact: Douglas J. Ranalli Founder & Chief Strategy Officer NetNumber 650 Suffolk Street, Suite 307 Lowell, MA 01854 dranalli@netnumber.com www.netnumber.com 978-454-4210 ext 22 978-454-5044 (fax)