ADTRAN AOS Version R10.1.0 Command Reference Manual page 1581

Command Reference Guide E1 Interface Command Set
loop-alarm-detect
The loop-alarm-detect command enables detection of a loop alarm on the E1 interface. Use the no form
of this command to disable this feature.
Syntax Description
No subcommands.
Default Values
By default, this command is enabled.
Command History
Release 6.1 Command was introduced.
Functional Notes
This command enables the detection of a loopback alarm. This alarm works in conjunction with the
sa4tx-bit command setting. The loopback condition is detected by comparing the transmitted sa4tx-bit
value to the received Sa4 bit value. If the bits match, a loopback is assumed. This detection method only
works with a network in which the far end is transmitting the opposite value for Sa4.
Usage Examples
The following example enables detection of a loop alarm on the E1 interface:
(config)#interface e1 1/1
(config-e1 1/1)#loop-alarm-detect
60000CRG0-35E Copyright © 2012 ADTRAN, Inc. 1581