[c-nsp] DS3 Nubie

[Jay Nakamura]

On Fri, Sep 24, 2010 at 3:48 PM, Jeff Wojciechowski
<Jeff.Wojciechowski at midlandpaper.com> wrote:
> Definitely planning on having the cable guys extend our dmarc with pre-made cables.
>
> How do you know if the DS3 signal is too hot?
>
> Thanks,
>
> Jeff

Unless you have fancy DS3 test set, only way to find out is start
using it.  We saw bunch of errors but telco swore up and down that
line was clear.  This list clued me into possible hot circuit.  Stuck
a attenuator in the Rx side and error disappeared.  We were using an
old 7500 series DS3 card.  Newer cards may be more tolerant.  We no
longer have any DS3s other than muxed T1 and I haven't deployed any at
customer sites in 5 years so I don't know how newer cards handle it.