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278 CHAPTER 17: FUNDAMENTAL CT3 INTERFACE CONFIGURATION COMMANDS
# Set LIC to “hello” for CT3 interface T3 2/0.
<Sysname> system-view
[Sysname] interface t3 2/0
[Sysname-T3 2/0] mdl data lic hello
# Send path messages on CT3 interface T3 2/0.
<Sysname> system-view
[Sysname] interface t3 2/0
[Sysname-T3 2/0] mdl generate path
t1 alarm
Syntax t1 line-number alarm { detect | generate { ais | rai }}
undo t1 line-number alarm { detect | generate { ais | rai }}
View CT3 interface view
Parameter line-number: T1 line number, in the range 1 to 28.
detect: Enables/disables periodical alarm signal detection. By default, periodical
alarm detection is enabled.
generate: Sends alarm signals, AIS or RAI, for line state test. By default, alarm
signal sending is disabled.
ais: Alarm indication signal.
rai: Remote alarm indication signal.
Description 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.
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 with the display controller t3 command.
The supported alarm signals, LOS, LOF, AIS, RAI, FEBE, and idle, are ANSI T1.403
compliant.
You can configure a T1 line to send only a type of alarm signal. To have the
channel send another type of signal, use the undo t1 alarm command to remove
the previous setting first. In addition, when the RAI signal generated upon
detection of the LOS, LOF, or AIS signal is present, the T1 line cannot send another
type of signal. To do that, use the undo t1 alarm detect command to disable the
T1 line to send the RAI signal generated after detecting an alarm first.