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switchhook
system
administrator
test
special ringback
one long tone followed by one short, dull
tone
tone indicating that the person you dialed is
busy on a call and has Call Waiting.
speed dialing
feature that allows you to place a call or
enter an account code by pressing the “#”
and a 2- or 3-digit code.
feature that initiates the sending of a call to
a desired telephone.
button depressed by the handset when the
telephone is not in use.
person responsible for assigning features
transfer
trunk
and overseeing System 25
feature that allows you to
ringer on your SLAC and
Selector Console.
feature that allows you to
operation.
test the lights and
the lights on your
connect the
person you are talking with to another
person, and then drop out of the
conversation.
a telecommunications line between two
switching systems.
(See also
outside line. )
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