Multitech MultiDSU56K MT56DSU-R Owner's Manual page 58

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MT56DSU-R Owner's Manual
This section defines several of the terms used in this manual. For an
overview of DSU basics, refer to section 1.8 of this manual.
A
ALBO (Automatic Line Build Out) - part of “equalizer” circuitry
used to compensate for various gauges and alterations of local
loops.
Anti-Streaming - an option that prevents a streaming (jammed)
DTE from affecting other devices on a multi-point network.
Asynchronous communications - communications between
computer devices at irregular intervals. To do so, the device adds
start and stop bits to each character it sends.
B
BERT (bit error rate tester) - the type of testing used to verify the
operating parameters of a data communications line.
bps (bits per second) - unit of measure for data transmission.
C
Central Office (CO) - the telephone company site where switching
equipment is located (as opposed to customer premises).
Channel - the digital path on a cable on which data is transmitted. A
logical way to look at the path data travels when sent between
locations.
Circuit assurance - an optional conditioning of the CTS signal.
Clear To Send (CTS) - an interface signal that indicates whether the
modem or DSU is ready to accept a data transmission from the
DTE.
CO (Central Office) - facility where communications common
carriers terminate customer lines and locate line interconnection
equipment.
Clocking - a synchronous device circuit that sends signals at a
precise frequency corresponding to the bit rate of that device.
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