01-21-2022 03:08 PM
Place an external call from Voip phone 19xxxxxxxxxx, phone does not ring but shows it is on a call, with on call options appearing on soft keys, hold, end call, transfer. person being called never receives call. Internal calls to extensions are fine. can receive external calls no problem.
Solved! Go to Solution.
01-24-2022 03:46 PM
ISP finally acknowledged issue was on their end, but were not forthcoming in what the resolution was. I suspect the traffic was not handled as voice traffic.
01-22-2022 12:18 PM
It sounds as if you might have a firewall issue to resolve. It seems that the signaling may not be getting through. You might want to check firewall rules for your signaling protocols or check to see that that SIP Inspection is disabled.
Verify which signaling protocols you are using and ensure they are open in the appropriate firewalls:
Great article in SIP Inspection and VoIp.
https://getvoip.com/blog/2020/09/01/what-is-sip-alg/
01-24-2022 03:46 PM
ISP finally acknowledged issue was on their end, but were not forthcoming in what the resolution was. I suspect the traffic was not handled as voice traffic.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide