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Call Disconnects after one ring

iwearing
Level 1
Level 1

‎09-02-2008 05:38 AM - edited ‎03-15-2019 12:59 PM

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.

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0 Helpful
5 Replies 5

shabali52
Level 1
Level 1

‎09-02-2008 05:42 AM

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

0 Helpful

iwearing
Level 1
Level 1
In response to shabali52

‎09-02-2008 06:08 AM

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

Ian.

0 Helpful

Chris Deren
Hall of Fame
Hall of Fame
In response to iwearing

‎09-02-2008 06:16 AM

can you post a debug of the call?

Chris

0 Helpful

iwearing
Level 1
Level 1
In response to Chris Deren

‎09-02-2008 07:29 AM

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.

0 Helpful

Chris Deren
Hall of Fame
Hall of Fame
In response to iwearing

‎09-02-2008 07:32 AM

debug isdn q931 will give us disconnect cuase id.

Chris

0 Helpful
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