[23033] in North American Network Operators' Group

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Re: Maintenance modems and power failures

daemon@ATHENA.MIT.EDU (Austin Schutz)
Wed Feb 10 21:58:24 1999

Date: Wed, 10 Feb 1999 18:38:57 -0800
From: Austin Schutz <tex@shrubbery.net>
To: nanog@merit.edu

>Most network providers are aware of the secret hiding in most of our
>POPs.  Those little sporters and courier modems stuffed into a rack
>somewhere plugged into the nearest available outlet, as the only
>out-of-band access.  Has anyone come up with a solution for powering
>these forgotten pieces of equipment, which doesn't cost more than
>the modem itself?
>
>At first you might think it makes sense to power them off the UPS
>which is powering the rest of your equipment.  The only problem is
>if you are using the maintenance modem to monitor your UPS.  This
>is just one of those things which has bugged me for a few years, but
>I still haven't come up with a solution I really like.
>
	Get two modems.

POTS ---- Modem 0 ---- Modem 1
            |            |
          UPS AC       Utility AC

	This only really makes sense if you have your terminal server
w/ redundant power, one utility AC and the other UPS AC. 

	Austin

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