JR> A GENERAL DATACOM DESKTOP 500A DSU on the front.
 JR> The back says
 JR> DDS   V.35  Business Equipment      an RS-232 port and power.
 JR> Anyone know what this is for?
It isn't a modem. DSU= Data Service Unit. Not real familiar with them, but I 
think their basic use is to connect off premise workstations to the LAN via a 
telephone line. V.35 is the protocol it uses to send/recieve data at 56K(?).
Would have to check my books at work for more info.
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