Panasonic 15000 - Manual (Page 109)

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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
pulse code modulation (PCM)
A standardized method of producing digital speech. Defined in ITU-T G.711.
PVC
1 See permanent virtual channel (PVC) (page 101) .
2 See permanent virtual circuit (PVC) (page 101) .
PVG
See packet voice gateway (PVG) (page 96) .
PVID
See port-VLAN identifier (PVID) (page 104) .
PVP
See permanent virtual path (PVP) (page 101) .
Q interface signaling (QSIG)
An internationally defined inter-PBX signaling standard. Defined in European
Telecommunications Standards Institute (ETSI) specifications.
QC
See queue controller (QC) (page 110) .
QOS, QoS, Qos
See quality of service (QOS, QoS, Qos) (page 109) .
QSIG
See Q interface signaling (QSIG) (page 109) .
Q-tag
An abbreviated name for the IEEE 802.1Q VLAN tag header that consists of
the TPID and TCI sub-headers. This header identifies the user priority and
LAN identification for an Ethernet packet.
QRD
See queue relay device (QRD) (page 110) .
quality of service (QOS, QoS, Qos)
A series of service classes that reflect the traffic importance and urgency over
a connection.
For ATM networks and services, QOS classes are defined by the ATM Forum
for UNI 3.0/3.1 and UNI 4.0. Nortel Multiservice Switch system also defines a
set of corresponding ATM QOS classes (UBR, CBR, VBR, CO, CNLS).