Hi, lookup("location") functions extracts username from Request-URI and relay INVITE without any username, causing UAC sends a CANCEL message. Is the function suppose to replace uri with "contact" field in the found entry in "location" table? INVITE uri arrives at Kamailio:Request-Line: INVITE sip:8181111111@example.net:5060 SIP/2.0 INVITE uri leaves Kamilio:Request-Line: INVITE sip:10.10.10.1:5060 SIP/2.0 lookup("location") function finding match and returns 1: $rc=1 entry in "location" table for this call:*************************** 1. row *************************** id: 104 ruid: uloc-557ad93a-2d6-1 username: 8181111111 domain: NULL contact: sip:8181111111@10.10.10.1:5060 received: NULL path: NULL Any help in this regard would be greatly appreciated Al,Thanks