Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
New Member

3620 PRI not passing any traffic..

Hi all

Today my 3620 PRI stopped answering the pri t1 calls. I had to reload it to start functioning again. My 3620 has a t1 pri connected to verizon wireless and a ethernet connection to my DMZ which holds the web server. I would like to know if anyone had this problem before or is it a bug i am hitting on. I am running 12.2.12a code. attached is the sh ver output.

------------------ show version ------------------

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3620-I-M), Version 12.2(12a), RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Tue 24-Sep-02 00:21 by pwade

Image text-base: 0x60008930, data-base: 0x60A08000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

as-syr3620a uptime is 10 hours, 17 minutes

System returned to ROM by reload

System restarted at 09:46:38 EST Wed Feb 19 2003

System image file is "flash:y"

cisco 3620 (R4700) processor (revision 0x81) with 45056K/4096K bytes of memory.

Processor board ID 15619969

R4700 CPU at 80Mhz, Implementation 33, Rev 1.0

MICA-6DM Firmware: CP ver 2730 - 5/23/2001, SP ver 2730 - 5/23/2001.

Bridging software.

X.25 software, Version 3.0.0.

Primary Rate ISDN software, Version 1.1.

1 FastEthernet/IEEE 802.3 interface(s)

24 Serial network interface(s)

24 terminal line(s)

2 Channelized T1/PRI port(s)

DRAM configuration is 32 bits wide with parity disabled.

29K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

16384K bytes of processor board PCMCIA Slot0 flash (Read/Write)

Configuration register is 0x2102


I also like to know , if there is any dropping off calls, or line not answered (in my t1 controller) , can be proactively managed throught a management console. I am already directing my logging traffic to a syslog server. Can you people recommed how and what looging need to be turned on to monitor the above mentioned.

any help is appreciated.


Senthil Natarajan

Cisco Employee

Re: 3620 PRI not passing any traffic..

Need to know that status of PRI line when it stops answring the calls. You need to issue command "show isdn status" to see layer 1,2 and 3 status. Now also need to know "sh controller T1" to see any physical layer issue it may have.

Now if the users are complaining about the calls are getting dropped prematurely, then you need to start troubleshooting it. I do know that you want to do it proactively but its difficult to see the possible problem if it dosn't appear with pattern.

Anyway following debug will help,

debug isdn q931

debug ppp nego

debug modem csm

debug modem

debug ppp auth

CreatePlease to create content