Lucent Technologies MERLIN LEGEND Release 6.0 System Programming Manual page 1094

MERLIN LEGEND Communications System Release 6.0
System Programming 555-660-111
Glossary
UPS
V
VAC
VDC
VMI
videoconferencing
system
virtual private
network
VPN
voice-band
channel
voice mail
voice messaging
interface
(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.
System application that allows face-to-face meetings, with
voice and video, to occur between individuals or groups.
This application requires high-speed data transmission
facilities. See also desktop videoconferencing and group
videoconferencing.
See VPN .
(virtual private network) A type of private network that uses
the switching capabilities of the PSTN , rather than tandem
switching , to direct calls between connected
communications systems. A VPN may constitute a part of a
private network.
A transmission channel, generally in the 300–3400-Hz
frequency band.
Application that allows users to send messages to other
system extensions, forward messages received with
comments, and reply to messages.
See VMI .
Issue 1
February 1998
Page GL-28