Assuming this is a dial ISDN interface, synchronization (or billing :-) isn't needed until interesting traffic is heard & the interface is brought up or awakened. Have I come close to answering your question ??? Phil ----- Original Message ----- From: Alex Lee Newsgroups: groupstudy.cisco To: Sent: Monday, April 09, 2001 1:21 PM Subject: Re: No keepalive > Can someone let me know the reason to config 'no keepalive' on a BRI > interface ? Thanks. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=53&t=53 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]