8 Terminology
Throughout this document the following terminology is used:
Term Meaning
CoS Class of Service
CPE Customer Premises Equipment
DSCP Differentiated Services Code Point. Code contained in the IP header used to
determine the priority of IP packets.
DSL Linerate Data rate of a DSL span available to the application
DSL Link Synonymous for DSL Span
DSL Master Synonymous for STU-C
DSL Payload rate Synonymous to DSL Linerate
DSL Slave Synonymous for STU-R
DSL Span Connection between STU-C and STU-R, composed of one or more wire pairs.
DSL Sync rate Physical synchronization rate of a DSL wire pair
EOC Embedded Operations Channel, an overhead channel available in SHDSL for
management purposes
Linerate cf. DSL Linerate
LTU Line Termination Unit, functionally equivalent to STU-C
NTU Network Termination Unit, functionally equivalent to STU-R
Payload rate Synonymous to linerate
STU-C Synchronous Terminal Unit – Central Office Side. The end of a DSL link that
starts up and controls the link. Typically installed at the central office
STU-R Synchronous Terminal Unit – Remote Side. The end of a DSL link that is con-
trolled by the STU-C. Typically installed at the customer premises
Sync rate Cf. DSL Sync rate
VID Virtual LAN Identifier, a.k.a "VLAN Number". The unique identifier of a VLAN.
Carried in the VLAN Tag of an Ethernet frame.
VLAN Virtual LAN (IEEE 802.1q)
Revision: 2007-05-24
8-1
To Previous Page
Loading...
