Schmid Watson Specifications download pdf (Page 49)

Revision: 2012-02-15

8-1

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 controlled 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)

C-VLAN Customer VLAN

S-VLAN Serviced Provider VLAN

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Schmid Watson Specifications Page 49