Nortel 4000 用户指南

Managing Remote Access Concentrators Using Annex Manager

Appendix A    RAC Parameters

A-102

defines the transmit clock for the T1 Network Interface. You can select:

•

looptiming

 to use the recovered receive clock at the transmit

clock.

•

localtiming

 to use the local clock as the transmit clock.

•

throughtiming

 to use the recovered receive clock from the other

interface as the transmit clock.

defines the DS1 interface loopback configuration. Users cannot access T1 lines
when you change this parameter value. You can select:

•

noloop

 to prevent the signal from looping through the T1

engine.

•

payloadloop

 to allow the incoming signal to be looped through

the T1 engine after it passes through the framing function.

•

lineloop

 to cause the incoming signal to loop to the network

without passing through the T1 engine.

•

localloop

to cause the T1 engine outgoing signal to loop back to

the incoming side.

T1 lines are available to users only when you choose

noloop

.

Type

T1 DS1

Values

looptiming, localtiming, throughtiming

Default

looptiming

Lists

DS1 Line, T1_DS1

Type

T1 DS1

Values

noloop, payloadloop, lineloop, localloop

Default

noloop

Lists

DS1 Line, T1_DS1