IP Phone to PSTN random failure

Unanswered Question
Sep 21st, 2007

Hello,

Using a CCM 5.1 architecture with 7961 IP Phone, some calls to PSTN randomly fails after being established. That means that the call is established, the 2 parties speak and all of a sudden, the call is ended. My client is using a 2800 gateway with a partial T2 Telco Line (26 channels). What else but the Telco Provider Quality would end calls like this ? This happens quite rarely but is annoying.

Does anyone have an idea ?

Thanks for your help,

Regards,

Laurent IGNATIO

I have this problem too.
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Tommer Catlin Fri, 09/21/2007 - 10:58

Check to make sure that MGCP is not coming unregistered for some reason. You may want to enable tracing on this gateway to see that it is ok.

Is this a new install or existing?

lignatio Thu, 09/27/2007 - 01:48

Hello,

This is an existing install but we are using an H323 gateway (this is not an MGCP one).

I think I'll have to have a look at the traces regarding this gateway.

Thanks,

Laurent

icabrera Thu, 09/27/2007 - 02:10

Hi, try to use some debug command at the gateway to see what is the disconnect cause.

The "debug voip ccapi inout" is very useful.

Regards

lignatio69 Mon, 10/01/2007 - 07:17

Hi,

Thanks for your help. I'll have a look at this kind of debug output when I am at the client site.

Thanks for your help

Regards,

Laurent

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