I've had this exact problem before. After looking at SDL logs, I see that my Incoming CSS was not being applied.
The trick is this: I definitely have an Incoming CSS, BUT, I applied it after I created the gateway on CUCM. I deleted the GW, re-creat...
Right, well, in our scenario we are generally using the loopback for both nat and sip. This occurs on that (loopback) as well.
Easiest fix is just the upgrade. In 16.6 (Everest) specifically you can actually, manually, change the ports that are blo...
Despite no help from Cisco (insisting this was not a problem and was acting as expected, not even referencing the below mentioned nat feature), I had to send this to my team.
We’ve ran into a few instances of 4300 routers having problems with SIP i...
You'll notice my understanding of what you explained since it is part of that flow but:
They needed to be able to do this from outside of the system, call in from the PSTN, while not breaking normal DBE.
I know this is three years late but:
I've had to setup a call flow where users dial in, hit a call handler, and want to dial-by-extension directly to a voicemail from that call handler. (without breaking the ability to also use regular dial-by-exten...
