Command Reference Guide

SROS Command Line Interface Reference Guide E1 Interface Configuration Command Set
5991-2114 © Copyright 2005 Hewlett-Packard Development Company, L.P. 537
remote-alarm [rai | ais]
The remote-alarm command enables transmission of a remote alarm. Use the no form of this command to
disable all transmitted alarms.
Syntax Description
rai Choose to send a remote alarm indication (RAI) in bit position 3 (Sa3).
ais Choose to send an alarm indication signal (AIS) as an unframed all-ones signal.
Default Values
The default for this command is rai.
Command Modes
(config-e1 1/1)# E1 interface configuration mode.
Functional Notes
An E1 will respond to a loss of frame on the receive signal by transmitting a remote alarm to the far end to
indicate the error condition. TS0 of an E1 contains the Frame Alignment Signal (FAS) in the even
numbered frames. The odd numbered frames are not used for frame alignment and some of those bits are
labeled as spare bits (Sa bits) in bit positions 4 through 8.
Usage Examples
The following example enables transmission of AIS in response to a loss of frame:
(config-e1 1/1)#remote alarm ais