Instruction manual

GLOSSARY
U
Uniform Dial Plan (UDP)
A feature that allows a unique 4- or 5-digit number assignment for each terminal in a
multi-switch configuration, such as a Distributed Communications System (DCS) or a
Main/Satellite/Tributary configuration.
V
Voice Terminal
A single-line or multi-appearance voice instrument (telephone).
W
Wide Area Telecommunications Service (WATS)
A service that allows calls to a certain area or areas for a flat-rate charge based on
expected usage.
Wink-Start Tie Trunk
After establishing a connection with a distant switching system for an outgoing call, the
system waits for a momentary signal (wink) before sending the digits of the called
number. Similarly, on an incoming call, the system sends the wink signal when ready to
receive digits.
Write Operation
The process of putting information onto a storage medium such as magnetic tape.
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