Panasonic 1200N 用户手册
V
Glossary
B-84
Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
VCO
Voltage Controlled Oscillator: An oscillator whose clock frequency is determined
by the magnitude of the voltage presented at its input. The frequency changes when
the voltage changes.
by the magnitude of the voltage presented at its input. The frequency changes when
the voltage changes.
VD
Virtual Destination. Refer to VS/VD.
VF
Variance Factor: VF is a relative measure of cell rate margin normalized by the
variance of the aggregate cell rate on the link
variance of the aggregate cell rate on the link
Virtual Channel Switch
A network element that connects VCLs. It terminates VPCs and translates VCI
values. It is directed by Control Plane functions and relays the cells of a VC.
values. It is directed by Control Plane functions and relays the cells of a VC.
Virtual Path Switch
A network element that connects VPLs. It translates VPI (not VCI) values and is
directed by Control Plane functions. It relays the cell of the VP.
directed by Control Plane functions. It relays the cell of the VP.
VLAN
Virtual Local Area Network: Work stations connected to an intelligent device
which provides the capabilities to define LAN membership.
which provides the capabilities to define LAN membership.
VMEBUS
VEASA Module European Bus: A 32-bit bus developed by Motorola, Signetics,
Mostek, and Thompson CSF. Used widely in industrial, commercial, and military
Mostek, and Thompson CSF. Used widely in industrial, commercial, and military
applications with over 300 manufacturers of VMEbus products worldwide.
1
VP
Virtual Path: A unidirectional logical association or bundle of VCs.
VPC
Virtual Path Connection: A concatenation of VPLs between Virtual Path
Terminators (VPTs). VPCs are unidirectional.
Terminators (VPTs). VPCs are unidirectional.
1.Newton’s Telecom Dictionary