Schmid Watson Specifications download pdf (Page 103)

Revision: 2006-04-27

12-1

12 Terminology

Throughout this document the following terminology is used:

Term Meaning

CoS Class of Service

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)

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Schmid Watson Specifications Page 103