Thanks it worked perfectly. root@debian:/usr/local/kamailio/sbin# ./kamctl fifo ul_rm_contact location 1040@saevolgo.ca 'sip:1040@192.168.1.6:63625;rinstance=a9a0e622352e6b5a;transport=UDP' root@debian:/usr/local/kamailio/sbin# root@debian:/usr/local/kamailio/sbin# ./kamctl ul show Domain:: location table=1024 records=1 max_slot=1 AOR:: 1040@saevolgo.ca Contact:: sip:1040@192.168.1.6:63625;rinstance=a9a0e622352e6b5a;transport=UDP Q= Expires:: deleted Callid:: ommuBmQf9njcG6kTeAcmjA.. Cseq:: 2 User-agent:: Z 3.9.32144 r32121 State:: CS_SYNC Flags:: 0 Cflag:: 0 Socket:: udp:192.168.1.27:5060 Methods:: 5087 Ruid:: uloc-58c94581-362d-1 Reg-Id:: 0 Last-Keepalive:: 1489585541 Last-Modified:: 1489585541