I am in the process of replacing a HW device that my service provider provides by configuring a SIP peer on asterisk. I am having trouble getting the register message from asterisk to include the host part that the hw device provides during the register, causing asterisk not to be able to register properly. I have included the sniffer traces from both devices below for explanation. The register command I have in sip.conf is
register => 64677XXX:XXXXXXX@moip.oc2:5060
Look forward to your help !