No i have primary ISDN on center. I want to use it just for dial-in. And the dial-in user use his ip address, that not using ip pool; and don't authentication. Even it can dial up, but cannot ping each other. I open the debug of dialer Can you give me a sample? Must it have 'dialer-gourp' command? Must it have 'dialer-group' used with 'dialer string' or 'dialer map'? Thanks. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=4355&t=4355 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]