Primary Rate Access Unit (Pau) Alarms - 3Com 3C421600A Quick Setup Manual

A-4 A A: D
PPENDIX ESCRIPTION OF
Primary Rate Access
Unit (PAU) Alarms
Alarm
F2 (RAI)
Yellow
F3 (LOS)
Red
F3 (OOF)
Red
F4 (AIS)
Blue
F5
(E1 only)
LED
S
The Primary Rate Access Unit (PAU) has a seven-segment display and LEDs
to show PRI-ISDN status as shown in the table below.
Condition Carrier LED
Remote Frame Green
Alarm
Loss of Signal Red
Out of Frame Green
Unframe All Amber
ones Signal
Continuous Green
CRC errors
Alarm LED Description
Amber The remote end has lost framing or
signal and sends this alarm to the
Primary Rate Access Unit.
Red The T1 or E1 signal has been lost. The
Primary Rate Access Unit declares a
red alarm and sends out a yellow
alarm to the remote end.
Red The T1 or E1 training signal has been
lost and the framed payload can no
longer be received. The Primary Rate
Access Unit declares a red alarm and
sends out a yellow alarm to the
remote end.
Amber The remote end is sending out an all
ones signal. This usually occurs when
the remote end cannot send out a
framed signal. The Primary Rate
Access Unit declares a blue alarm.
Red Primary Rate Access Unit receives
excessive CRC errors.