Our internet provider is UPC and we have a SIP trunk from UPC too. To register no username and password are required. We received from UPC only the host IP and the client IP which is a 10.X.X.X network.
Here are the SIP settings I was trying
(outgoing)
type=friend
port=5060
insecure=port,invite
host=Ipadress host server
context=from-trunk
(incoming)
type=friend
insecure=port,invite
dissallow=all
host=Ipadress host server
context=from-trunk
allow=alaw
Register string is blank
and for the “USER Context,” I typed UPC
How would I register with the SIP server? Do I need to send the client IP which we received from UPC?
If they assigned you a “client IP” that would seem to mean that is the IP to which they will send calls. Therefore you would be expected to assign that IP to your PBX. If that does not sound right to you, you should communicate more with them.
An IP-authenticated connection between you and your SIP provider means you do not register and you do not need to specify credentials. It is a simple ACL (access control list) arrangement.