I am having a problem with and Asterisk installation where two ports connected to a TDM400 card will have a very loud noise when you try to dial. The server has an OpenVox D110P, a TDM04B and a Xorcom Astribank 8 fxs. It is running Zaptel 1.4.11 and Asterisk 1.4.18.
The problem always happens with two ports (34 and 35) which are
connected to two GSM gateways. They will work fine for a week and then
when you try to dial a mobile number through them you will hear a very
loud noise (like a TV tuned to a channel with no signal at top volume).
To resolve this I have to reboot the server.
Three weeks ago we reinstalled the server from scratch to see if the
problem would go away but after almost two weeks without interruption
today the noise came back. If you plug the GSM gateway to a regular
phone you get a clear dial tone and you can send and receive calls.
When connected to the card you will get the loud noise when dialing out
and incoming calls will just ring and ring.
Any ideas why these two ports are misbehaving?
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Telecomunicaciones Abiertas de México S.A. de C.V.
Carlos Chávez Prats
Director de Tecnología
+52-55-91169161 ext 2001
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