Hello colleagues, I have a question regarding how to test an ISDN connection for a dialer interface that is mapped to a loopback interface. I am used to dialer map statements where I can ping the IP address that the dialer is mapped to, and that brings up the ISDN link. The interface I want to test now does not have dialer map statements, but looks like this: interface Dialer102 description > IDSN Callback ID - Cologne, Germany ip unnumbered Loopback1 encapsulation ppp no ip route-cache ip ospf cost 1500 no ip mroute-cache dialer pool 1 dialer remote-name Router-Cologne dialer idle-timeout 300 dialer string 0031302341498 dialer string 0031302882561 dialer string 0031302893245 dialer string 0031302883823 dialer caller 31302883823 callback dialer caller 31302893245 callback dialer caller 31302882561 callback dialer caller 31302341498 callback dialer load-threshold 64 either dialer-group 1 no fair-queue pulse-time 0 no cdp enable ppp authentication chap callin ppp chap hostname HUB-ROUTER ppp multilink Is there a way to test if the ISDN works without bringing down the serial line ? Thanks for your help in advance. Regards, Hans _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]