Re: [nsp] Simple DDR..

From: Kai (kai@www.abest.com)
Date: Sat Dec 27 1997 - 21:38:36 EST


Amrit Mohan Kayastha <amrit@mos.com.np> wrote:

>
> My questions..
>
> 1. Does modem to be used must support v25 bis. It looks most of the
> modems do not support it.

no, the normal hayes command set is just fine.
>
> 2. Can sync port of 2501 could be configured to connect modem to it

all dialup modems I know of are async and only support ITU-RS232/423 ,
but not V35 (an electrically balanced interface), X.11 , etc.

>
> 3. Looks like aync1 is supported in this box. . My reading says somehow I
> can make use of async1 and aux port to meet my need..
>
> --thanks,
>

Here's some quickie Cut&paste out of one of the many saved router configs
I have. It will be up to you to customize this and write better
"packet of interest" filters.

(relevant router config lines follow)

chat-script modemdial ABORT ERROR ABORT BUSY "" "ATDT \T" TIMEOUT 60 "host:" "ppp" "ogin:" "myname" "assword:" "xyzxyz"
!
interface Async1
 ip unnumbered Ethernet0
 no ip mroute-cache
 encapsulation ppp
 no ip route-cache
 dialer in-band
 dialer idle-timeout 1200
 dialer enable-timeout 6
 dialer map ip 206.98.210.30 modem-script modemdial 917186516000
 dialer hold-queue 30
 dialer-group 1
!
access-list 101 deny igrp any host 255.255.255.255
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
ip route 0.0.0.0 0.0.0.0 206.98.210.30
ip route 206.98.210.30 255.255.255.255 Async1 10
!

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