[cisco-voip] debug isdn q931

[Ryan Ratliff]

nfas is the protocol that lets you bind multiple PRIs to the same D- 
chan.  Definitely not supported with MGCP though.

How about if you turn on 'deb mgcp packet' along with your q931 debug?

-Ryan

On Jun 15, 2006, at 2:02 PM, Ed Leatherman wrote:

They are definately both PRI

Isnt there some configuration that allows multiple PRI's to share a D- 
channel? I specifically told the telco we didnt want this, and i'd be  
surprised if it would work without any extra configuration on my  
side, but thats the only other thing I could think of.

#sh isdn status
Global ISDN Switchtype = primary-4ess

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 1. Layer 3 output  
may not apply

ISDN Serial0/0/0:23 interface
         dsl 1, interface ISDN Switchtype = primary-ni
         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 1 CCBs = 0
     The Free Channel Mask:  0x807FFFFF
     Number of L2 Discards = 0, L2 Session ID = 203
     Total Allocated ISDN CCBs = 0

On 6/15/06, Ryan Ratliff <rratliff at cisco.com> wrote: Are both of them  
PRIs for sure?  Perhaps the one not showing q931
debugs is actually a channel-group (CAS) and not a PRI?

-Ryan

On Jun 15, 2006, at 11:37 AM, Ed Leatherman wrote:

Just had the defaults on both routers, however I tried the "logging
console 7" on the problem router, which looks like it should display
debuging messages and it still shows nothing.

Just for grins and giggles I turned on debug cdp packets, and i am
getting debug messages on both routers.. so its something with the
ISDN that is causing it to not display.

On 6/15/06, Mark Borchers <mborchers at igillc.com> wrote:
Have you set your logging level high enough to show debug traffic?
See the logging console command args.
-----Original Message-----
From: cisco-voip-bounces at puck.nether.net [mailto: cisco-voip-
bounces at puck.nether.net] On Behalf Of Ed Leatherman
Sent: Thursday, June 15, 2006 10:26 AM
To: ciscovoip
Cc: jeff.davis at mail.wvu.edu
Subject: [cisco-voip] debug isdn q931

I'm fairly certain this is something I am doing wrong but I cant find
it for the life of me..

I have 2 ISR routers, 3825 with some T1 interfaces and DSPs for
conferencing. identical firmware loads and configurations, other than
1 has an FXO card that the other doesn't.

I'm executing on both routers from seperate SSH sessions:
# term mon
# debug isdn q931

On router A, I can see all the Q931 debug messages go by. On router
B, I see nothing on the SSH session however I know calls are being
placed on it ( I can see the channels going in service etc from
RTMT). Could I have something turned off on router B that doesnt show
up in the config?

--
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations



--
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations
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-- 
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations