Quotehow would I reset SP4? Do I delete it and add again?
Yes, but if you defined the SP manually in OBi Expert it will show as Not Configured and you won't be able to delete it. I never had to do this. The only time I deleted an SP was when removing GV from an OBi110.
QuoteI confirmed that all your SP4 configurations remained after I added Callcentric#2 to SP4
This is crazy! The only way I know to prevent updates from OBiTalk is to disable OBiTalk Provisioning. You have to signin via the local interfaces to see this setting. It's under System Management/Auto Provisioning. You can also verify the settings via the local interface. Even if it's disabled, why would OBiTalk show CC as registered.
Note: You can make changes via local interface unless OBiTalk auto Provisioning is disabled.
I use non-standard port numbers (outside the 50xx range) and I never had problems routing calls to an OBi via IP address.
I hate to suggest the following, but if you can't resolve this you might have to start over (delete the OBi202 from OBiTalk, re-add and configure everything from scratch.