Lucent Technologies 555-670-111 Benutzerhandbuch
MERLIN LEGEND Communications System Release 7.0
System Programming
System Programming
555-670-111
Issue 1
April 1999
Glossary
GL-29
V
Uninterruptible
Power Supply
Power Supply
See
.
Unit Load
Measure of the power load drain of a module, telephone, or
adjunct.
adjunct.
Unmonitored
Extension
Extension
.
Unrestricted Data
Channels
Channels
Also called
Clear Data Channels. Allow the transmission of
occurrences of more than seven contiguous zero bits. If an
unrestricted data channel is requested and only restricted
channels are available, the call will be rejected. See also
unrestricted data channel is requested and only restricted
channels are available, the call will be rejected. See also
.
UPS
Uninterruptible Power Supply. Device that connects to the
system to provide 117 VAC to the equipment when the
commercial power source fails.
system to provide 117 VAC to the equipment when the
commercial power source fails.
VAC
Alternating Current Voltage.
VDC
Direct Current Voltage.
VMI
Voice Messaging Interface. Enhanced tip/ring port.
Videoconferencing
System
System
System application that allows face-to-face meetings, with
voice and video, between individuals or groups. This
application requires high-speed data transmission facilities.
See also
voice and video, between individuals or groups. This
application requires high-speed data transmission facilities.
See also
.
Virtual Private
Network
Network
See
.
VPN
Virtual Private Network. Type of private network that uses
the switching capabilities of the
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.
communications systems. A VPN may constitute a part of a
private network.
Voice Announce
System feature that allows users to receive voice
announcements on their telephones. In Release 7.0 and
later systems, the VA On Idle Only option (only for MLX
telephones) allows voice announcement calls to go through
only when the telephone is idle.
announcements on their telephones. In Release 7.0 and
later systems, the VA On Idle Only option (only for MLX
telephones) allows voice announcement calls to go through
only when the telephone is idle.
Voice-Band
Channel
Channel
Transmission channel, generally in the 300–3400-Hz
frequency band.
frequency band.
Voice Mail
Application that allows users to send messages to other
system extensions, to forward messages received with
comments, and to reply to messages.
system extensions, to forward messages received with
comments, and to reply to messages.
Voice Messaging
Interface
Interface
See
.