We are currenlty having a problem with 2821 with a 4fxo not tell the PSTN ( Telstra ) that the call has end.
IP Phone <--- 2821 <---PSTN<---- Phone B
If the IP Phone hungup first, on a PSTN originated call, the PSTN network will not see the hangup. If you listen to the phone line the call is still active and connected to phone b.
IP Phone ---> 2821 ---> PSTN----> Phone B
But if it is a IP Phone originated call the hungup works ok.
The 2821 is config with mgcp.
I have looked at
But we are still having problems.
echo-cancel coverage 64
timing hookflash-out 50
I have been searching and reading threads for the last 8 days. I was thinking that I would finely start a thread to get some specifics help. Thankyou for the help
So if you have searched, you should have found:
1. recoding tones and frequency analysys detailed discussions.
2. world tone database
But you didn't ?