ADTRAN 1000R Series - Manual (Page 603)

Command Reference Guide E1 Interface Configuration Command Set
61200510L1-35E Copyright © 2005 ADTRAN 603
remote-alarm [rai | ais]
The remote-alarm command selects the alarm signaling type to be sent when a loss of frame is detected
on the E1 receive signal. Use the no form of this command to disable all transmitted alarms.
Syntax Description
rai Specifies sending a remote alarm indication (RAI) in response to a loss of frame.
Also prevents a received RAI from causing a change in interface operational
status.
ais Sends an alarm indication signal (AIS) as an unframed all-ones signal.
Default Values
The default for this command is rai.
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
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)#interface e1 1/1
(config-e1 1/1)#remote alarm ais