[cisco-voip] Requested circuit/channel not available

Wed Apr 2 10:56:45 EDT 2014

Good luck James. Telco would for sure do loopback testing first before sending someone onsite, to avoid any major outage change the order of the circuit in the Route group/route list. Watch the circuit for 24-48 hours before reverting the change.

You can always create a specific route pattern that will only use this circuit, say a test pattern to call your mobile phone, this way you can safely test the circuit after it has been repaired.

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: Re: [cisco-voip] Requested circuit/channel not available

I swapped the connections on the 2 PRI cards this morning, and the error follows the circuit.
So, I'm almost 100% sure that it's a Telco problem, and time to deal with BT.
Wish me luck.

Thanks everyone,
Hefin

-----Original Message-----
From: Hefin James [ahj]
Sent: 02 April 2014 07:08
To: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Requested circuit/channel not available

I've got 2 isdn cards in the gateway, and before things get busy this morning, I'm going to swap connections to see if the fault follows the connection, or stay with the PRI card.

Details of the current output shown below.

show isdn status

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply ISDN Serial0/0/0:15 interface
        dsl 0, interface ISDN Switchtype = primary-net5
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0xFFFF7FFF
    Number of L2 Discards = 0, L2 Session ID = 16

show isdn service

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply ISDN Se0/0/0:15, Channel [1-31]
  Configured Isdn Interface (dsl) 0
   Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
    Channel :  1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    State   :  0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)
    Channel :  1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    State   :  0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Thanks,
Hefin
________________________________________
From: Mehtab Shinwari [mshinwari at fidelus.com]
Sent: 02 April 2014 01:41
To: Hefin James [ahj]; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Requested circuit/channel not available

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

_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip