QSIG Trunk - Seeing disconnect Cause i = 0x81A9

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Dec 9th, 2008
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Dec 9 17:40:09.322: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x01D2

Sending Complete

Bearer Capability i = 0x8090A3

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA9839E

Exclusive, Channel 30

Facility i = 0x9FAA06800100820100A112020100020100800A416A617A204E6177617A

Calling Party Number i = 0x0081, 'cllin_party_number'

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, 'cpn_number'

Plan:Unknown, Type:Unknown

Dec 9 17:40:09.346: ISDN Se0/0/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x81D2

Cause i = 0x81A9 - Temporary failure


I've looked at 'Understanding Debug isdn q931 Disconnect Codes', but need further evidence to point to Meridian PBX issue.



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irisrios Mon, 12/15/2008 - 14:01
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Send the following:

Log files and debugs where error is seen (debug isdn q931 / show log)

show tech

Description of call flow when error is seen

Cause i = 0x81A9 - Temporary failure, is coming from your PBX or TELCO (whoever is controlling the first upstream ISDN switch).

Nicholas Matthews Mon, 12/15/2008 - 14:54
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Sometimes with PRI circuits we have to guess why the other side is disconnecting. The best way to troubleshoot this is to simplify the trunk as much as possible, and then start changing the more 'core' features.

If you're looking to get this fixed with the greatest efficiency start with the Meridian, because temporary failure is a code that is equivalent to a '500 Internal Server Error'. This message is sent on IOS gateways when we have DSP errors for example, or when we specific bugs we hit.

In CCM you can try changing your QSIG encoding type in the service parameters, and uncheck any extra check boxes on the MGCP gateway page.

Otherwise, you will want to ask Meridian what's going on with their circuit.


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