I have one obi100 and one obi110. I used to use the SP1 for GV and SP2 for another SIP service (supervoip) and they worked just fine. However, since the support of GV is likely to stop, I tried to see how to register to two sip services using Obi100. For example, SP1 is for localphone and SP2 for supervoip. This should be pretty straight forward, I thought. However, to my surprise, even though SP1 registered with no problem, I cannot register SP2. After reset, it showed "Register Failed: 401 Unauthorized (server=94.75.247.45:5060; retry in 8s)" Actually, 94.75.247.45:5060 is the ip address for localphone. I check the ITSP Profile B/Sip page the registration clearly shows sip.supervoip.com. Not sure why it is the case. It looks like Obi100 cannot have two different IP addresses to register. I am wondering if anybody had this problem before or I need to do anything special to make it work. Please help! Thanks.
I got the answer from the DSL Report Forum. The problem was that on SP2 Service page, X_ServProvProfile need to set to B. Everything works now.