The following was received March 17, 2000 From: Mike Borella This is to affirm that 3Com Corporation, in accordance with long- established practice, will offer patent licenses for submissions made by it which are adopted or recommended as a standard by your organization as follows: If part(s) of a submission by 3Com is(are) included in a standard and 3Com has patents and/or pending application(s) that are essential to implementation of such included part(s) in said standard, 3Com is prepared to grant - on the basis of reciprocity (grantback) - a license on such included part(s) on reasonable, non-discriminatory terms and conditions. Steve Borsand I.P. Licensing Group 3800 Golf Road M/S RM.112 Rolling Meadows, IL 60008 tel - 847-262-3304 fax - 847-262-0231