ADTRAN AOS Version R10.1.0 Command Reference Manual page 1921

Command Reference Guide
loopback remote line
Use the loopback remote line command to send a loopback code to the remote unit to initiate a line
loopback. Use the no form of this command to send a loopdown code to the remote unit to deactivate the
loopback. Variations of this command include:
loopback remote line fdl
loopback remote line inband
Syntax Description
fdl
inband
Default Values
No default values are necessary for this command.
Command History
Release 1.1
Functional Notes
The following diagram depicts the difference between a line and payload loopback.
NI CSU
DS1
Usage Examples
The following example initiates a remote line loopback using the FDL:
(config)#interface t1 1/1
(config-t1 1/1)#loopback remote line fdl
60000CRG0-35E
Uses the facility data link (FDL) to initiate a full 1.544 Mbps physical
(metallic) loopback of the signal received by the remote unit from the
network.
Uses the inband channel to initiate a full 1.544 Mbps physical (metallic)
loopback of the signal received by the remote unit from the network.
Command was introduced.
T1 Network Interface
Payload Loopback
Line Loopback
Copyright © 2012 ADTRAN, Inc.
T1 Interface Command Set
1921