Configuring E1 interface for Data in 3745 Router

[raju]

Hello,

We have a 3745 Router (C3745-IPBASE-M, Version 12.3(5b) )with E1 interface . When I issue sh ver command, it shows the E1 interface as follows .

30 terminal line(s)

1 Channelized (E1 or T1)/PRI port(s)

My Question is , how to configure this E1 interface for Dial-in users . The E-1 will be connected to PSTN through PAIR GAIN modem and we will get the Toll free Number (800.XXX). E-1 should be configured for Data traffic. Dial-in users need to dial the Toll free number to access our Network.

Help will be appreciated.

Regards,

Raju

[amritpatek]

For information on configuring E1 refer to :

Configuring Channelized E1 & T1

http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_configuration_guide_chapter09186a0080087328.html

[makchitale]

Not sure what you mean by “The E-1 will be connected to PSTN through PAIR GAIN modem”, we will need internal digital MICA modems on the 3745 to terminate modem data calls & the E1 line connecting to the telco switch. You have NM-1CTE1-PRI card in 3745. That card can work as T1 or E1 card

This link should help in configuring for E1:

http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_feature_guide09186a00801af22a.html#1027188

Thanks, Mak

[hoathaivngt]

Hi

The controller should be configured (with E1) as

controller E1 1/0

framing NO-CRC4

ds0-group 2 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 2

country vietnam

metering

timer interdigit incoming 3000

Your lines (make up of the NM-xxDM modem module) should be configured as

line 97 126

flush-at-activation

script modem-off-hook offhook

script callback mod2

modem InOut

modem autoconfigure discovery

transport preferred none

transport input all

autoselect ppp

flowcontrol hardware

Remember, line number begin with Slot*31

Eg: Modem module in slot 3 begin with 3*32 + 1 = 97, so the 30 modems module (NM-30DM) should be numbered as 97-126

The Async interfaces should be configured as

interface Group-Async1

ip unnumbered FastEthernet0/0

encapsulation ppp

ip tcp header-compression

async dynamic address

async dynamic routing

async mode interactive

peer default ip address pool setup_pool

no keepalive

ppp callback accept

ppp authentication ms-chap

group-range 97 126

Pls. tune your lines and Async paramaters if needed.

Good luck

Hoa THai