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New Member

ISDN Pri on Cisco 3640 router.

Hi Guys,

I have a Cisco 3640 and would like to use it to receive PoS (point of sale) connections.

My problem is that I cannot enable pri-group on it, the command is not available on controller level.

is it possible using the hardware below , or should I order additional hardware.!!!

Here is the hardware/Software I have:

1. NM-2FE2W


3. NM-30DM

4. IOS 12.2.17

My show version output:

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-JS-M), Version 12.2(17), RELEASE SOFTWARE (fc3)

Copyright (c) 1986-2003 by cisco Systems, Inc.

Compiled Thu 15-May-03 17:04 by srani

Image text-base: 0x60008930, data-base: 0x61450000

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


Router uptime is 3 minutes

System returned to ROM by power-on

System image file is "flash:c3640-js-mz.122-17.bin"

cisco 3640 (R4700) processor (revision 0x00) with 45056K/4096K bytes of memory.

Processor board ID 15066108

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Channelized E1, Version 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.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

TN3270 Emulation software.

Primary Rate ISDN software, Version 1.1.

5 Ethernet/IEEE 802.3 interface(s)

2 FastEthernet/IEEE 802.3 interface(s)

2 Serial network interface(s)

30 terminal line(s)

2 Channelized E1/PRI port(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

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

Configuration register is 0x2102

My Topology:

POS-PSTN(ISDN Pri) -cisco 3640 - LAN



New Member

Re: ISDN Pri on Cisco 3640 router.

Hi Ganaa

The problem is that you use the wrong IOS it does not support """National ISDN Switch Types for BRI and PRI Interfaces""" feature here you can find that if your ios support it or not also if you want to use E1/Pri you can use this ios :


please Rate if it helpful.


Best regards Bahman Mozaffari.

New Member

Re: ISDN Pri on Cisco 3640 router.

Hi Mozaffari,

Thank you for your reply.

This time i don't have these IOS versions and access to

So if you have following IOS sofware versions pls send me.



12.2T and your offered ios software 12.1.11.

I belive in your help. :)



New Member

Re: ISDN Pri on Cisco 3640 router.

You can contact me with yahoo messenger then i ll help you.

here is my id

New Member

Re: ISDN Pri on Cisco 3640 router.

Hello, Ganna!

You need NM-1CTE1B or NM-2CE1B modules. NM-30DM module cannot work with VWIC modules, it works only with NM-CE/CT modules.

wbr, Yaroslav Rosomakho

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