Hello everyone: I got 2620 serving 10 ISDN sites, I am wondering if How can I backup this router by 7505. So 7505 will comes online or connects ISDN sites when 2620 goes down. Thanks Inamul _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]