Re: (ASCEND) Ascend Max T1 and FR backup

[Peter Lalor <plalor@infoasis.com>]

>From: "Tim Brown" <tim@sumter.net>
>
>Does anyone use ISDN or mulitlink analog as a backup for your T1 and Frame
>Relay connections to you Maxen. We thought we could just do it through the
>max, but our T1 and PRI dial-up trunks are provisioned in-bound only and
>reject any outbound calls. We've have had problems with three different
>backhaul circuits recently (all different telcos) and thought it might be
>time to put some sort of low bandwidth backup (say 128K or so) in place as a
>solution. An automatic backup would be ideal(i.e. all traffic on FR circuit,
>FR circuit goes down, traffic starts moving on backup ISDN or Analog
>line(s). Thanks in advance for any suggestions and/or comments.

Well, the first thing you'll need is some kind of ISDN line that you 
can actually place outbound calls on. If you can't get that turned on 
on your PRI, you could try a BRI, either on your Max or on some 
little router like a Pipeline.

I have had ISDN backup working with some success in the past, either 
with a T1 being backed up by a BRI, both connected to the same 
Pipeline 130, and also with a BRI plugged into a Pipeline 75 backing 
up a T1 plugged into a Max 4000.

The latter was a bit problematic for me, either with the link not 
coming up automatically or not dropping afterwards, but I think you 
should be able to get it going properly with some fiddling with route 
preferences.

When you decide how you're going to tackle it, tell the list and 
we'll try to help.
-- 

Peter Lalor           Infoasis
plalor@infoasis.com   http://www.infoasis.com/

"Where's my burrito?" -- Homer
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