Glossary:
Installation and Upgrades for G700 with S8300 or S8700
555-234-100 — Issue 3 — May 2003 369
TAAS
See Trunk Answer from Any Station (TAAS).
TABS
Telemetry asynchronous block serial
TAC
Trunk-access code
tandem switch
A switch within an electronic tandem network (ETN). A tandem switch provides the logi c t o de te rmine th e be st route fo r
a network call, possibly modifies the digits that are outpulsed, and allows or den ies certain calls to certain users. See also
electronic tandem network (ETN).
tandem through
A switched connection of an incoming trunk to an outgoing trunk that occurs without human intervention.
tandem tie-trunk network (TTTN)
A private network that interconnects several switching systems that are owned by the same customer.
TC Technical consultant
TCM
See traveling class mark (TCM).
TCP
See Transmission Control Protocol (TCP).
TCP/IP
See Internet Protocol (IP). See also Transmission Control Protocol (TCP).
TDM
See time-division multiplexing (TDM).
TDM bus
See time-division multiplex (TDM) bus.
TDR
See Time-of-Day Routing (TDR).
TEG
Terminating extension group
Teletypewriter (TTY)
A data terminal that works with a telephone. A TTY sends and receives special audio tones that are known as Baudot
code. The TTY then translates this code into text, and sends the text to an alphanumeric display. TTYs are helpful for
people with communication disabilities.
terminal
A device that sends data and receives data within a system. See also administration terminal.
TFTP
See Trivial File Transfer Protocol (TFTP).
tie trunk
A telecommunications channel that directly connects two private switching systems.