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New Member

FXO PSTN Disconnection

Hi,

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

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml

But we are still having problems.

eg config

voice-port 0/2/2

trunk-group VOICE-T

echo-cancel coverage 64

cptone AU

timing hookflash-out 50

impedance complex1

Everyone's tags (6)
5 REPLIES
Hall of Fame Super Gold

FXO PSTN Disconnection

You need to configure the exact tome params as a custom. cptone alone won't work.

New Member

FXO PSTN Disconnection

I have try some off -

https://supportforums.cisco.com/message/1166213#1166213

Is there a resource to ffind the correct one?

Hall of Fame Super Gold

FXO PSTN Disconnection

Yes resources and methods are discussed in the many many threads on the subject, if you could take the time to search.

New Member

FXO PSTN Disconnection

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

Hall of Fame Super Gold

FXO PSTN Disconnection

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 ?

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