Command Reference Guide

SROS Command Line Interface Reference Guide T1 Interface Configuration Command Set

loopback remote payload

Use the loopback remote payload command to send a loopback code to the remote unit to initiate a

payload loopback. A payload loopback is a 1.536 Mbps loopback of the payload data received from the

network maintaining bit-sequence integrity for the information bits by synchronizing (regenerating) the

timing. Use the no form of this command to send a loopdown code to the remote unit to deactivate the

loopback.

Syntax Description

No subcommands.

Default Values

No defaults necessary for this command.

Command Modes

(config-t1 1/1)# T1 or DSX-1 Interface Configuration Mode required.

(config-t1 1/2)#

Functional Notes

The following diagram depicts the difference between a line and payload loopback.

Usage Examples

The following example initiates a remote payload loopback:

(config)#interface t1 1/1

(config-t1 1/1)#loopback remote payload

T1 Network Interface

DS1

NI CSU

Payload Loopback

Line Loopback