Glossary
System Programming
GL–25
trunk
Line creating a telecommunications path between the
communications system and the telephone company
central office (
CO
) or another switch. Often used
synonymously with
line
.
trunk jack
trunk pool
TTR
(touch-tone receiver) Device used to decode
DTMF
touch-
tones dialed from
single-line telephones
or
Remote Access
telephones.
U
uninterruptible
power supply
See
UPS
.
unit load
Measure of the power load drain of a module, telephone, or
adjunct
.
UPS
(uninterruptible power supply) Device that connects to the
system to provide 117 VAC to the equipment when the
commercial power source fails.
V
VAC
Alternating-current voltage.
VDC
Direct-current voltage.
VMI
(voice messaging interface) An enhanced
tip/ring
port.
voice-band channel
A transmission channel. generally in the 300–3400-Hz
frequency band.
voice mail
Application that allows users to send messages to other
extensions in the system, forward messages received with
comments, and reply to messages.
voice messaging
interface
See
VMI
.
Содержание MERLIN LEGEND Release 3.1
Страница 372: ...Memory Card 3 236 Common Administrative Procedures...
Страница 572: ...Telephones 4 200 Programming Procedures...
Страница 715: ...Memory Card Programming Procedures 4 343...
Страница 749: ...Feature Quick Reference 5 34 Centralized Telephone Programming...
Страница 773: ...Customer Support Information B 2 System Programming...
Страница 798: ...Button Diagrams E 6 System Programming...
Страница 800: ...Sample Reports F 2 System Programming Continued on next page...