register => +917949031XXX@gj.ims.airtel.in:XXXXXne#1:+917949031XXX@gj.ims.airtel.in@10.5.110.101/+917949031XXX [AirtelSIP] disallow=all allow=all type=friend dtmfmode=rfc2833 qualify=yes nat=force_rport,comedia insecure=invite,port host=gj.ims.airtel.in username=+917949031XXX@gj.ims.airtel.in secret=XXXXX#1 fromdomain=gj.ims.airtel.in defaultexpirey=120 canreinvite=no context=trunkinbound maxexpiry=600 progressinband=yes exten => _65X.,1,AGI(agi://127.0.0.1:4577/call_log) exten => _65X.,n,SipAddHeader(P-Preferred-Identity: <sip:+917949031XXX@gj.ims.airtel.in>) exten => _65X.,n,Progress() exten => _65X.,n,Dial(SIP/${EXTEN:2}@AirtelSIP,,tTo) exten => _65X.,n,Hangup() for custom callerid ;;;;USE CALLER IN HEADER as AIRTEL REQUIRED CID IN HEADER exten => _67X.,1,AGI(agi://127.0.0.1:4577/call_log) exten => _67X.,n,Set(CALLERID(num)=+${CALLERID(num)}) exten => _67X.,n,SipAddHeader(P-Preferred-Identity:<sip:+${CALLERID(num)}@mu.ims.airtel.in>) exten...