Alcatel Omni Switch/Router User Manual page 1002

Viewing T1/E1 Configuration and Alarm Information
port. An out of frame event occurs when two or more framing errors occur within a 3 micro-
second period for Extended SuperFrame signals, or when two or more errors occur out of five
or fewer consecutive framing bits. The signal will be back in frame when there have been
fewer than two frame bit errors within a 3 microsecond period for Extended SuperFrame
signals.
when a T1 port has been in Out-of-Frame (
condition will be removed if the
port. A squelch alarm occurs when the line signal level of the input pulse is below a thresh-
old level. The threshold level on a
port. A frame bit error occurs when an error bit is detected during the framing process.
been detected on this port. An
(99.9% density) is received for more than 1.5 seconds.
port. A yellow alarm occurs in SuperFrames when bit 6 of all channels has been zero for at
least 335 microseconds. The yellow alarm will not occur if a Loss of Signal alarm has already
occurred. In Extended Superframes, an alarm occurs if the yellow alarm pattern is found.
SuperFrame.
Page 33-14
. The total number of out of frame events that have been detected on this
. The number of times this port has been in a red alarm state, which occurs
condition has been absent for at least 16.6 seconds.
OOF
. The number of squelch alarm events that have been detected on this
line is
T1
. The number of framing bit error events that have been detected on this
. The number of Alarm Indication Signal (
occurs when an unframed signal with a high density of 1s
AIS
. The total number of yellow alarm events that have occurred on this
A T1 port that has been configured as a SuperFrame
(SF) port can produce false yellow alarms. You can
disable yellow alarm detection on a T1 port with the
command, which is described in Configuring a
T1 Port on page 33-4.
. The number of times a
) condition for 2.55 seconds. The red alarm
OOF
.
0.5V
Note
error has been found in an Extended
CRC-6
) events that have
AIS
T1