[cisco-voip] Requested circuit/channel not available

[Mehtab Shinwari]

James,

Whats "sh isdn q931 status" showing?.

Do a "show isdn status" this will show which channels are open and which ones are out of service. If you have some channels up and its mission critical you can always busy out the "bad" channels effectivily making a customized fractional pri

And yes do engage the vendor at this point. A shut no shut on the isdn interface would not hurt at this point either.

Regards


Mehtab Shinwari | CCNP RS/V
Senior Support Engineer



-------- Original message --------
From: "Hefin James [ahj]" <ahj at aber.ac.uk>
Date:
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Requested circuit/channel not available


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