Thursday, August 6, 2015
Troubleshooting A SIP Gateway When Inbound Calls Dont Work
I was putting in a new SIP gateway for a customer to replace an older one. One thing I came across is that one of the Subscribers (in the Cisco voice cluster) did not have any phone services running. So I came across this as I was troubleshooting why I could not get a call to come in on the PRI and forward over, via SIP, to the subscriber onsite. Traces are you best friend, even in the voice world. Below is how we realized it. The Subscriber never responds to the gateways invite.