ADTRAN 1000R Series - Manual (Page 704)

Command Reference Guide T1 Interface Configuration Command Set
61200510L1-35E Copyright © 2005 ADTRAN 704
loopback remote line [fdl | inband]
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.
Syntax Description
fdl 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.
inband 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.
Default Values
No defaults necessary for this command.
Applicable Platforms
This command applies to the NetVanta 1000R, 3000, 4000, and 5000 and Total Access 900 Series units.
Command History
Release 1.1 Command was introduced.
Functional Notes
The following diagram depicts the difference between a line and payload loopback.
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
T1 Network Interface
DS1
NI CSU
Payload Loopback
Line Loopback