[74253] in North American Network Operators' Group
Re: HSSI-adtran
daemon@ATHENA.MIT.EDU (Philip Lavine)
Mon Sep 20 13:27:02 2004
Date: Mon, 20 Sep 2004 10:26:20 -0700 (PDT)
From: Philip Lavine <source_route@yahoo.com>
To: nanog <nanog@merit.edu>
In-Reply-To: <85B382D76BBBC83FFDADB3A9@[192.168.0.16]>
Errors-To: owner-nanog-outgoing@merit.edu
To all,
I tried the attenuator and they failed to provide any
relief.
Philip
--- Alex Bligh <alex@alex.org.uk> wrote:
>
>
>
> --On 20 September 2004 07:56 -0700 Philip Lavine
> <source_route@yahoo.com>
> wrote:
>
> > I am having a problem witha DS3 that terminates
> into a
> > Adtran CSU (T3SU-300) and then into a 7200 with
> HSSI.
> > I can not ping with a 0000 data pattern and I
> > experience packet loss and errors when I pass TCP
> > traffic.
> >
> > Adtran recommended an attenuator.
> >
> > What is the issue here? Is the signalling
> incompatible
> > with a PA-T3+. Should I be wasting my time with an
> > external CSU?
>
> Last time I looked, PA-T3+ were even MORE fussy
> about the need
> for attenuation than the non-"plus" variants (of the
> "never actually
> work with a BT DS-3 delivered as standard" sort of
> fussy). So yes
> you are probably wasting your time with an external
> CSU, but you
> are also quite likely to need attenuators anyway.
>
> Alex
>
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