Lucent Technologies MERLIN LEGEND Release 6.1 System Manager's Manual page 455

MERLIN LEGEND Communications System Release 6.1
System Manager's Guide 555-661-118
Glossary
V
VAC
VDC
VMI
videoconferencing
system
virtual private
network
VPN
voice-band
channel
voice mail
voice messaging
interface
W
WATS
wink-start tie trunk
(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 .
(Wide Area Telecommunications Service) Service that
allows calls to certain areas for a flat-rate charge based on
expected usage.
Tie trunk on which the originating end transmits an off-hook
signal and waits for the remote end to send back a signal (a
wink) that it is ready for transmission.
Issue 1
August 1998
Page GL-28