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New Member

Call Disconnects after one ring

Hi,

Call manager V4.1(3) with 2821 MGCP gateways. Inbound calls from 30 Channel BT bearer fail intermittently. The internal IPT handset rings once and the call disconnects.

BT say that there are no issues with the circuit?.

No issues are experienced with outbound calls.

No IP routing problems are apparent between gateway and Call manager etc.

Any ideas on how best to troubleshoot would be appreciated.

thanks

Ian.

5 REPLIES
New Member

Re: Call Disconnects after one ring

Does it allow your to pickup the call via handset or it disconnects even before that, sounds like a codec issue.

New Member

Re: Call Disconnects after one ring

The call is never answered. It disconnects after one ring. It is intermittent though.

Ian.

Hall of Fame Super Silver

Re: Call Disconnects after one ring

can you post a debug of the call?

Chris

New Member

Re: Call Disconnects after one ring

Chris,

Not an easy one to catch as it is intermittent.

Are you suggesting a Debug ISN Q931 from the VGateway or a Call manager trace?.

thanks

Ian.

Hall of Fame Super Silver

Re: Call Disconnects after one ring

debug isdn q931 will give us disconnect cuase id.

Chris

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