Glossary
Glossary-60
255-700-243
PacketStar
®
PSAX 12-Port Medium-Density DS1 Multiservice Module User Guide
, Issue 1
Release 8.0
VP
virtual path. A group of VCs carried between two points that
provide a way to bundle traffic headed in the same direction.
VPC
virtual path connections. Unidirectional virtual path links
between virtual path terminators.
VPI
Virtual Path Identifier. An ATM term for the 8-bit field in the
ATM cell header that indicates which virtual path the ATM
should use in routing the cell.
VPN
Virtual Private Network, a restricted network that uses public
wires to connect nodes. A VPN provides a way to encapsulate,
or "tunnel," private data cheaply, reliably, and securely
through a public network, usually the Internet.
VTOA
voice telephony over ATM. A broadband packet technology,
based on open standards by the ATM Forum and ITU-T, that
enables equipment vendors to build open architectures for
delivering toll-quality voice services with guaranteed QoS
(quality of service) levels.
W
WAN
wide area network. A computer and voice network geograph-
ically larger than a metropolitan area network (MAN). Tele-
phone companies treat WANs different from MANs because
of speed of light-timing considerations, and because regional
Bell operating companies are prohibited from carrying traffic
across Local Access Transport Areas (LATAS).
wide area network
See WAN.
wideband
Originally, any line allowing more than voice transmission. It
has come to be interpreted as any facility allowing more than
narrowband transmission (T1 at 1.544 megabits per second).
wireless backhaul
All traffic that travels back and forth between the cell site base
station and its MSC is backhauled, meaning it travels the
between these two points and back many times for the dura-
tion of a call.Write backhaul or backhauling as one word.
workstation
A powerful, stand-alone computer.
X
xDSL
A generic term standing for a variety of digital subscriber line
services (the lowercase x standing for generic): ADSL, HDSL,
IDSL, SDSL, and VDSL. This family of services provides
extremely high bandwidth over the telephone company
unshielded twisted-pair lines. Telephone companies are offer-
ing these services to compete with the cable TV industry’s
high speed access via modem as a way to provide high speed
Internet services to consumers.
Z
Содержание PacketStar PSAX
Страница 24: ...Part 1 General ...
Страница 25: ......
Страница 44: ...Part 2 Console Operation ...
Страница 45: ......
Страница 182: ...Part 3 AQueView Operation ...
Страница 183: ......
Страница 404: ......
Страница 405: ...Part Number 534M0A8001D1 Copyright 2002 Lucent Technologies All rights reserved ...