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Tie Trunk
A telecommunications channel that directly connects two private switching systems.
Time Division Multiplex Bus
A special bus that is time shared by preallocating short time slots to each
transmitter on a regular basis.
In a PBX, all port circuits are connected to the time
division multiplex bus permitting any port to send a signal to any other port.
Tone Ringer
A device with a speaker, used in electronic voice terminals to alert the user.
Translations
Specific information assigned to a terminal or to the system and customized for the
user.
Trunk
A telecommunications channel between two switching systems.
Trunk Group
Telecommunications channels assigned as a group for certain functions.
Trunk Port
The hardware providing the access point to the system switching network for each
circuit associated with a trunk.
Voice Terminal
A single-line or multiline voice instrument (e.g., telephone)
Voice Terminal Adjuncts
. 500A/502A Headset Adapter
. S101A/S102A Speakerphone
. Acoustic Coupler
(Refer to Section 4–Hardware Description for a complete list and description
of Voice Terminal Adjuncts. )
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.
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