Command Reference Guide

62 ● ct1 alarm 3Com Router 5000 Family and Router 6000 Family
Command Reference
ct1 alarm
Purpose Use the t1 alarm command to enable the specified T1 line on the CT3 interface to
detect/send alarm signals.
Use the undo t1 alarm command to remove the alarm signal detection/sending
setting.
Syntax t1 line-number alarm { detect | generate { ais | rai } }
undo t1 line-number alarm { detect | generate { ais | rai } }
Parameters line-number
T1 line number. Valid values are 1 to 28.
detect
Enables/disables periodical alarm signal detection. By
default, periodical alarm detection is enabled.
generate
Sends alarm signals, which can be AIS or RAI. Use this
function for line state test. By default, alarm signal
sending is disabled.
ais
Alarm indication signal.
rai
Remote alarm indication signal.
Example Enable periodical alarm signal detection on T1 line 1 on CT3 interface 1/0/0.
<3Com > system-view
[3Com ] interface t3 1/0/0
[3Com -T3 1/0/0] t1 1 alarm detect
Enable T1 line 1 on CT3 interface 1/0/0 to send AIS alarm signals.
<3Com > system-view
[3Com ] interface t3 1/0/0
[3Com -T3 1/0/0] t1 1 alarm generate ais
View This command can be used in the following views:
■ CT3 Interface view
Description At the startup of the router, periodical alarm signal detection is enabled on all T1 lines
on the CT3 interface. When a T1 line detects LOS, LOF, or AIS signals, it sends RAI
signals to its peer. Alarm state report for the interface is real time; you may view that
by executing the
display controller t3 command.
The supported alarm signals, LOS, LOF, AIS, RAI, FEBE, and idle, are ANSI T1.403
compliant.
You can only configure a T1 line to send a type of alarm signal. To have the channel
send another type of signal, use the
undo t1 alarm command to delete the