digital service unit ==>
data service unit
<communications> (DSU or "data service unit") A device used in digital
transmission for connecting a CSU (Channel Service Unit) to Data Terminal
Equipment (a terminal or computer), in the same way that a modem is used for
connection to an analogue medium.
A DSU provides a standard interface to a user's terminal which is compatible
with modems and handles such functions as signal translation, regeneration,
reformatting, and timing. The transmitting portion of the DSU processeses the
customers' signal into bipolar pulses suitable for transmission over the digital
facility. The receiving portion of the DSU is used both to extract timing
information and to regenerate mark and space information from the received
bipolar signal.
(1995-01-30)
Nearby terms:
data processing « data rate « data segment « data
service unit » data set » data set organization
» DataStage
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