Maintenance modems and power failures

Austin Schutz tex at
Thu Feb 11 02:38:57 UTC 1999

>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. 


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