[cisco-voip] Requested circuit/channel not available

[Hefin James [ahj]]

Hi,

Started to get this issue this morning with one of our MGCP gateways.
Incoming calls are working correctly on an ISDN30, but outgoing calls are being denied, and re-routed via a backup route.
Outgoing calls are hitting the gateway, but is getting a 'Requested circuit/channel not available' See trace below.

I've tried to change the channel selection order, but still the same.
I've checked everything that I can think of, and I'm beginning to think that this is a Telco issue, but thought that I'd  ask the group to see if there is anything else to check before I take it up with BT.

Thanks,
Hefin

2014-04-01 22:07:55 local3/7  Apr  1 21:07:54.602: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8  callref = 0x0004
2014-04-01 22:07:55 local3/7    Sending Complete
2014-04-01 22:07:55 local3/7    Bearer Capability i = 0x8090A3
2014-04-01 22:07:55 local3/7            Standard = CCITT
2014-04-01 22:07:55 local3/7            Transfer Capability = Speech
2014-04-01 22:07:55 local3/7            Transfer Mode = Circuit
2014-04-01 22:07:55 local3/7            Transfer Rate = 64 kbit/s
2014-04-01 22:07:55 local3/7    Channel ID i = 0xA9839F
2014-04-01 22:07:55 local3/7            Exclusive, Channel 31
2014-04-01 22:07:55 local3/7    Calling Party Number i = 0x0081, '2456'
2014-04-01 22:07:55 local3/7            Plan:Unknown, Type:Unknown
2014-04-01 22:07:55 local3/7    Called Party Number i = 0x80, '622456'
2014-04-01 22:07:55 local3/7            Plan:Unknown, Type:Unknown
2014-04-01 22:07:55 local3/7  Apr  1 21:07:54.682: ISDN Se0/0/0:15 Q931: RX <- RELEASE_COMP pd = 8  callref = 0x8004
2014-04-01 22:07:55 local3/7    Cause i = 0x82AC - Requested circuit/channel not available
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