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How to get Debug ISDN Q931 info

Viewing 5 posts - 1 through 5 (of 5 total)
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  • 18th December 2005 at 19:35 #30468
    aim
    Guest

    I am trying to figure out the call fail problem between my cisco 5400 and ISDN/PBX.

    Follow the instruction from the manual,enable the DEBUG ISDN Q931, on the cisco 5400. It just shows me ‘debug isdn q931 is on’, but I didn’t see the debug info. Do I need to run another command to see the debug info.(There are active calls and new calls attempt to 5400).

    Any input appreciated.

    Aim

    21st December 2005 at 16:47 #30469
    Alex Z
    Guest

    If you are using TELNET/SSH to access the cisco, then you need command “terminal monitor” to enable debug message for this session. Then you need “debug isdn q931 asn1” to enable user-friendly isdn call debug.

    22nd December 2005 at 12:42 #30470
    Teodor Georgiev
    Guest

    you need to issue the command “term mon”

    like this:

    #term mon

    to get the debug output on your screen

    22nd December 2005 at 17:04 #30471
    Aim
    Guest

    thanks a lot for the help. It works nicely

    Aim

    22nd December 2005 at 18:16 #30472
    Aim
    Guest

    Hi,
    Using ‘DEBUG ISDN Q931’ shows normal call clearing,but the what happened is the call duation is very short, say less than 30 sec. Call just got connected and then disconnected right away. Does anyone have good suggestions what cause this problem? I am thinking might be some higher level protocols disconnect the session, and send message to isdn layer, which perform disconnection. No idea where to start checking

    Thanks
    Aim

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