AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 872

Glossary
trunk
trunk jack
trunk pool
TTR
U
uninterruptible
power supply
unit load
UPS
V
VAC
VDC
VMI
voice-band channel
voice mail
voice messaging
interface
Line creating a telecommunications path between the
communications system and the telephone company
central office ( CO ) or another switch. Often used
synonymously with line .
See line/trunk jack .
See pool and modem pool .
(touch-tone receiver) Device used to decode DTMF touch-
tones dialed from single-line telephones or Remote Access
telephones.
See UPS .
Measure of the power load drain of a module, telephone, or
adjunct .
(uninterruptible power supply) Device that connects to the
system to provide 117 VAC to the equipment when the
commercial power source fails.
Alternating-current voltage.
Direct-current voltage.
(voice messaging interface) An enhanced tip/ring port.
A transmission channel. generally in the 300–3400-Hz
frequency band.
Application that allows users to send messages to other
extensions in the system, forward messages received with
comments, and reply to messages.
See VMI .
GL–25
System Programming