1.6.2.13, sip.conf: [155] type=friend context=longdistance callerid="Admin" <155> secret=test host=dynamic dtmfmode=rfc2833 allow=all defaultuser=155-trust ............ On aastra: Basic SIP Authentication Settings Screen Name Phone Number 155 Caller ID 155 Authentication Name 155-trust Password test But: WARNING[1737]: chan_sip.c:12800 check_auth: username mismatch, have <155>, digest has <155-trust> NOTICE[1737]: chan_sip.c:21687 handle_request_register: Registration from '155 <sip:155 at 10........>' failed for '10..........' - Username/auth name mismatch How do I set this so the Authenication is not the same as the extension? sean