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Installing WIC 2T into a 3620

I am attempting to install 2 WIC 2T's into a 3620, I have tried 5 different IOS's and still cannot get the router to even recognize the WIC cards. I have tried 12.2.10a, 12.2.1, 12.1.5T, and 12.2.8T. The router has 48mb of mem and 16mb of flash. Ideas anyone???????


Re: Installing WIC 2T into a 3620

The following is the min versions for the WIC-2T's on the 3621's.

12.0(7)XK, 12.1(1)T, 12.1(5)YB, 12.1(5)YD, 12.2(1), 12.2(2)T, 12.2(2)XT,


Are you certain you've got the correct part numbers on this WIC and correct platform? For example if you've got a 3631 only 12.2(2)XT1 is supported. Also there are certain Network Modules that are needed for support, according to the documentation. The WIC-2T and WIC-A/S are supported on the Cisco 3600 (on the NM-1FE2W, NM-2FE-2W, NM-2W, and the NM-1FE1R2W network modules). So, if you don't have one of these this might also be your issue.

Link for your information as well:

Hope this helps,


New Member

Re: Installing WIC 2T into a 3620

Here is what is currently running . I am not sure how to check 3621/31 What is the difference from a 3620??

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3620-IS-M), Version 12.1(5)T12, RELEASE SOFTWARE (fc1)

TAC Support:

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

Compiled Mon 04-Feb-02 09:38 by ccai

Image text-base: 0x60008950, data-base: 0x61132000

ROM: System Bootstrap, Version 11.1(19)AA, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

CoralWay-Router uptime is 2 hours, 19 minutes

System returned to ROM by reload

System restarted at 09:33:12 edt Thu Jun 27 2002

System image file is "slot0:c3620-is-mz.121-5.T12.bin"

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

Processor board ID 07661109

R4700 CPU at 80Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

Basic Rate ISDN software, Version 1.1.

1 Ethernet/IEEE 802.3 interface(s)

2 Serial network interface(s)

4 ISDN Basic Rate interface(s)

Integrated NT1's for 4 ISDN Basic Rate interfaces

DRAM configuration is 32 bits wide with parity disabled.

29K bytes of non-volatile configuration memory.

8192K bytes of processor board System flash (Read/Write)

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

Configuration register is 0x2102


Re: Installing WIC 2T into a 3620

it appears that your NM is not able to support these WICs. From your Show diag this is what you have.

Slot 0: NM-1E2W ---> Will not support your configuration according to previous link I sent.

Slot 0: WIC-1DSU-T1

Slot 1: WIC-1DSU-T1

Hope this helps,


Slot 1: NM-4B-U

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