How can I simulate an ISDN connection? I have a 4000 and a 2500(no bri interfaces)? Is it possible to use to interfaces on the 4000? ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]