Tcpdump your call's, and according to the sip response of it, you can locate the problem. If the sip response is 404(Not found), means your ext 1001 prehaps not register successful. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.opensips.org/pipermail/users/attachments/20110526/cd94c30a/attachment.htm>