I have a SIP trunk in between a Cisco CallManager 8.6 and Asterisk 1.8.5.0. I can call from the Cisco to the Asterisk but cannot when i call from the asterisk to the Cisco. I get the following error message: Got SIP Response 400 "Bad Request - 'Malformed/Missing URL' " back from 172.123.27.20:5060 (this is my callmanager). extensions.conf [test] exten=>94870,1,Dial(SIP/94870) exten=>94781,1,Dial(SIP/94781) include=> test sip.conf allow=ulaw allow=gsm [94870] type=friend host=dynamic secret=password context=test disallow=all allow=ulaw nat=yes [94871] type=friend host=dynamic secret=password context=test disallow=all allow=ulaw nat=yes [CM8] type=friend context=incoming host=172.123.27.20 disallow=all allow-ulaw nat=yes canreinvite=no qualify=yes I've played around with the canreinvite and qualify setting so hide them and set them to yes or no. ANy help would be greatly appreciated. Mitch -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20110725/7cba795d/attachment.htm>