[3286] in North American Network Operators' Group

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Re: Telco discussions

daemon@ATHENA.MIT.EDU (Mark M. Borchers)
Thu Jun 27 08:05:24 1996

From: "Mark M. Borchers"	<markb@infi.net>
To: dhirsch@bbn.com (Douglas Hirsch)
Date: Thu, 27 Jun 1996 07:57:16 -0400 (EDT)
Cc: oliveira@bbnplanet.com, nanog@merit.edu
In-Reply-To: <199606261853.OAA22722@foggy.bbn.com> from "Douglas Hirsch" at Jun 26, 96 02:53:15 pm

> I'm evaluating the new cisco 2524 with internal CSU/DSU, and it looks
> like the default is ESF/B8ZS on this box too.  Maybe there's hope for
> the vendors catching up with reality on this front afterall.
>
Ditto with the equipment I use from LARSCOM.  Defaults are D4/AMI/RS449.
The hardware itself seems just about bulletproof, however.  Although
the telcos seem to have never heard of it.
 
> Anyone have experience mixing different vendor CSU/DSUs and getting
> things like remote loopback to work?

I don't recall having problems on T1's.  I'm told that mixing vendor
equipment on IMUXed multiple T1's is a recipe for disaster and therefore
haven't tried to do it.

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