[cisco-voip] ISDN PRI channel stuck in busy status?

Mon Jul 21 09:40:32 EDT 2008

Also curious what a "sh call active voice brief" would show. Curious the ports are hung without a call, or if there are still call IDs and voice resources tied to the ports.

[cid:image001.jpg at 01C8EB0D.6FBC9030]
Justin Kennedy
Stallion Oilfield Services
StaRComm VSAT Administrator
Cell: 432-638-6876
Office: 432-687-9420
email: jkennedy at sofs.cc<mailto:jkennedy at sofs.cc>
________________________________
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Moataz Mamdouh
Sent: Monday, July 21, 2008 1:10 AM
To: cisco-voip at puck.nether.net; keli at carocomp.ro
Subject: Re: [cisco-voip] ISDN PRI channel stuck in busy status?

hi
could u please make a debug of isdn q.931 call setup please for 5 minutes or more
and show it to us in text file so we can see a clear image of the problem.

--- On Fri, 7/18/08, keli at carocomp.ro <keli at carocomp.ro> wrote:
From: keli at carocomp.ro <keli at carocomp.ro>
Subject: Re: [cisco-voip] ISDN PRI channel stuck in busy status?
To: cisco-voip at puck.nether.net
Date: Friday, July 18, 2008, 2:28 PM

Any ideas on this?

The ten channels seem to "fill up" with busy channels after about

half

a day or so of normal call traffic (2-3 simultaneous calls usually).

thanks,

   Zoltan

Quoting Kelemen Zoltan <keli at carocomp.ro>:

> Hi!

>

> We have a CCME, 4.2(0),

 IOS: 12.4(11)XW6 with a partial E1.

>

> When examining some complaints, that the client was unable to place

> more than a few calls outside and most of incoming calls failed to

> reach them, I found the ISDN interface with more busy channels than

> active voice calls.

>

> Below I attached an example, where channel 9 is stuck (on channel 10 I

> might have just catched a call that just disconnected, but channel 9

> was continuously stuck busy with no active call on it.).

>

> This is relatively light, since there's still 9 other channels for

> light traffic, but I have seen this interface with  8 or even all ten

> channels stuck.  So far I  haven't found  any other way to solve it

but

> to  restart the  serial interface.

>

> Any ideas what could be going wrong? Or at least if it's possible to

> recover a channel from that state, other than restarting

 the interface?

>

> Thanks,

>  Zoltan

>

>

> ccme#sh isdn stat ser 0/0/0:15

> Global ISDN Switchtype = primary-net5

> ISDN Serial0/0/0:15 interface

>    dsl 0, interface ISDN Switchtype = primary-net5

>    Layer 1 Status:

>    ACTIVE

>    Layer 2 Status:

>    TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

>    Layer 3 Status:

>    1 Active Layer 3 Call(s)

>    CCB:callid=2707, sapi=0, ces=0, B-chan=9, calltype=VOICE

>    CCB:callid=A622, sapi=0, ces=0, B-chan=8, calltype=VOICE

>    CCB:callid=A627, sapi=0, ces=0, B-chan=10, calltype=VOICE

>    CCB:callid=270E, sapi=0, ces=0, B-chan=7, calltype=VOICE

>    Active dsl 0 CCBs = 4

>    The Free Channel Mask:  0x8000003F

>    Number of L2 Discards = 0, L2 Session ID = 113

>

>

>        ccme#sh isdn serv ser 0/0/0:15

> PRI Channel

 Statistics:

> 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 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

3

>   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 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

2

>

>

>

> ccme#sh voice call 0/0/0:15  0/0/0:15 1 -          -  -

>    0/0/0:15 2 -          -  -                    0/0/0:15 3 -

> -  -                    0/0/0:15 4 -          -  -

> 0/0/0:15 5 -          -  -                    0/0/0:15 6 -          -

> -                    0/0/0:15 7

>      vtsp

 level 0 state = S_CONNECT

> callid 0x270E B07 state S_TSP_CONNECT clld 100 cllg 7518XXXXX

> 0/0/0:15 8

>      vtsp level 0 state = S_CONNECT

> callid 0xA622 B08 state S_TSP_CONNECT clld 07499XXXXX cllg 113

> 0/0/0:15 9 -          -  -                    0/0/0:15 10-          -

> -                    -------------------------------- configuration

>

> controller E1 0/0/0

> framing NO-CRC4

> clock source internal

> pri-group timeslots 1-10,16

> !

> interface Serial0/0/0:15

> no ip address

> encapsulation hdlc

> isdn switch-type primary-net5

> isdn overlap-receiving

> isdn incoming-voice voice

> isdn send-alerting

> isdn sending-complete

> no cdp enable

> !

>

> _______________________________________________

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> cisco-voip at puck.nether.net

>

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