Cisco 3945 - Debug ISDN q931 showing incomplete output

bryant036 · ‎10-03-2018

Hi All,

I currently have a 3945 with 15.5 ios version. This gateway currently has 5 PRIs connected to it. However, when we try to use the "debug isdn q931" command, it only seems to be displaying a the partial output of the command(please see below):

NOR-VGW-DC1B533#
Oct 3 20:56:21.801: ISDN Se0/0/3:23 Q931: Applying typeplan for sw-type 0xD is 0x2 0x1, Calling num 1865400843
Oct 3 20:56:21.803: ISDN Se0/0/3:23 Q931: Sending SETUP callref = 0x239A callID = 0x9FE7 switch = primary-ni interface = User
NOR-VGW-DC1B533#
Oct 3 20:56:23.671: msw_update_media_debug: Enter: enable[0]
Oct 3 20:56:23.671: msw_update_media_debug: Exit: msw_cond_debug[0]
Oct 3 20:56:23.707: msw_update_media_debug: Enter: enable[0]
Oct 3 20:56:23.707: msw_update_media_debug: Exit: msw_cond_debug[0]
Oct 3 20:56:24.009: msw_update_media_debug: Enter: enable[0]
Oct 3 20:56:24.009: msw_update_media_debug: Exit: msw_cond_debug[0]
NOR-VGW-DC1B533#
Oct 3 20:56:25.916: ISDN Se0/0/2:23 Q931: Applying typeplan for sw-type 0xD is 0x2 0x1, Calling num 8186543400
Oct 3 20:56:25.916: ISDN Se0/0/2:23 Q931: Sending SETUP callref = 0x239B callID = 0x9FE8 switch = primary-ni interface = User
NOR-VGW-DC1B533#
Oct 3 20:56:27.762: msw_update_media_debug: Enter: enable[0]
Oct 3 20:56:27.762: msw_update_media_debug: Exit: msw_cond_debug[0]
NOR-VGW-DC1B533#
Oct 3 20:56:29.575: msw_update_media_debug: Enter: enable[0]
Oct 3 20:56:29.575: msw_update_media_debug: Exit: msw_cond_debug[0]
Oct 3 20:56:29.627: ISDN Se0/0/1:23 Q931: Received SETUP callref = 0x8FE2 callID = 0x3665 switch = primary-ni interface = User
NOR-VGW-DC1B533#
Oct 3 20:56:33.978: ISDN Se0/0/1:23 Q931: Received SETUP callref = 0x8FE3 callID = 0x3666 switch = primary-ni interface = User

It doesn't seem to be showing the normal output of the debug isdn q931 command that shows the call being established. I tried to check to see if there any filters on any of the loggings and there was nothing erroneous sticking out. I have made sure that they are PRI's and are not using NFAS. Each PRI is using its own D channel. I verified that the DID is indeed going through this PRI because once the call establishes, we can see it on the show voice call status command.

Thank you in advance.

dkupper · ‎10-05-2018

Do any of your other debugs show incomplete or not all the information that you would expect? Could your buffer for logging be set too low? Maybe try entering the command logging buffered 10000 and then run the debug isdn q931 again and see if there is any difference. Or perhaps your terminal program needs to have its buffer increased.

bryant036 · ‎10-08-2018

hmm debug ccsip all is also incomplete. I tried to do the logging 10000 and and it is still the same result. Ive ruled out the terminal because I've used secure CRT, putty and its still displaying the same result.