I have a SIP trunk built between a Cisco CallManager version 8. I can dial the phones registered to the Asterisk PBX from a phone registered to the Call Manager. I've tried to keep the config as small as possible to help the troubleshooting process. Attached is he most recent debug. My Callmanager IP address is 10.169.169.250, Asterisk server is 10.169.169.251 SIP.CONF [6001] type=friend secret=cisco2003 callerid="Dave" <6001> host=dynamic canreinvite=no context=myphones regexten=6001 [CM8] type=friend host=10.169.169.250 canreinvite=yes ;disallow=all allow=ulaw allow=alaw qualify=yes context=myphones Extensions.conf myphones] exten => 6001,1,Dial(SIP/6001) exten => 6001,2,Hangup() exten => _X.,1,Dial(SIP/CM8/${EXTEN:0},30,rt) Thanks for any help. Mitch -------------- next part -------------- A non-text attachment was scrubbed... Name: Debug.rtf Type: text/rtf Size: 19432 bytes Desc: not available URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20110223/617f061a/attachment.bin>