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To: 4700gbera@um*.cc*.um*.ed*
Subject: Re: computer crosstalk
From: Phil Pfeiffer <phil@es*.ed*>
Cc: techdiver@opal.com
Date: Mon, 13 Mar 1995 02:51:57 -0500 (EST)

Sorry, one more point about the Aloha-based solution to the crosstalk 
problem outlined in the previous note.  To detect collisions, either
(1) the effective range of the receiver that's coupled with the 
transmitter must be greater than the range of the transmitter, or
(2) the wrist unit must detect collisions (the best place for the detection
hardware, actually), and must communicate problems to the transmitter.
More properly, the wrist unit must positively acknowledge successful 
transmissions.

-- Phil

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