ADTRAN 1000R Series - Manual (Page 600)

Command Reference Guide E1 Interface Configuration Command Set
61200510L1-35E Copyright © 2005 ADTRAN 600
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.
Applicable Platforms
This command applies to the NetVanta 1000R, 3000, 4000, and 5000 Series units.
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)#config e1 1/1
(config-e1 1/1)#loop-alarm-detect