[cisco-voip] T1 PRI stuck channel

CarlosOrtiz at bayviewfinancial.com CarlosOrtiz at bayviewfinancial.com
Tue Jan 29 15:12:27 EST 2008


Checked those IOS versions with the Bug Tool Kit (can't see CSCef68941). 
Newest IOS version was 12.3(11)T6.   Do you know the cause of this issue 
if any?



CarlosOrtiz at bayviewfinancial.com 
Sent by: cisco-voip-bounces at puck.nether.net
01/29/2008 02:39 PM

To
Wes Sisk <wsisk at cisco.com>
cc
cisco-voip at puck.nether.net
Subject
Re: [cisco-voip] T1 PRI stuck channel







Sorry, meant to include that......This is a 3845 Router running 12.4(3h). 
I'll check the bug ID's.  I also have a TAC case open and the engineer 
just responded saying that he hasn't found anything in my version yet. 

Carlos 


Wes Sisk <wsisk at cisco.com> 
01/29/2008 02:19 PM 


To
CarlosOrtiz at bayviewfinancial.com 
cc
cisco-voip at puck.nether.net 
Subject
Re: [cisco-voip] T1 PRI stuck channel








what platform and version? looks like several candidates: CSCdz53326, 
CSCef68941, CSCsd05492

/Wes

CarlosOrtiz at bayviewfinancial.com wrote: 

We had a location with a PRI experience an issue yesterday.  Layer 1-3 
status was good.  It appears that the 1st B channel was in a stuck state. 
Inbound and outbound calls were both set up to use low to high channels. 
After running the "show voice call summary" I would see the following 
output and the status would not change. 

PORT           CODEC    VAD VTSP STATE            VPM STATE 
============== ======== === ==================== ====================== 
0/0/1:23.1      g711ulaw  n  S_WAIT_STATS          S_TSP_WAIT_RELEASE      
 


After changing outbound calls to high to low the outbound calls started 
working again.  This lead me to believe that there was some kind of 
hardware/DSP or software issue.   I tried a shut no shut on the voice port 
and the controller but that did not fix the inbound problem.  A reboot did 
fix the issue. 

Anyone seen something similar? 

Carlos 


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