Nortel Networks Passport 4400 - Manual (Page 114)

Indicators Passport 4400 Hardware Installation Manual
11-4
Table 11-5. E1 Operational States
Indicator Function State Status
AT System Status Off Initialization mode – see Table 11-4.
Green Operational mode – see Table 11-4.
Flashing green Download active.
1A E1 Line 1
interface alarm
status Off Interface not active.
Flashing red IFAS (Frame Alignment Signal) loss.
Flashing amber FAS distant alarm.
Fast flashing
green TS16 AIS (Time Slot 16 Alarm Indication Signal).
Green Interface operational.
Fast flashing red CRC4 loss or MFAS loss.
Flashing green AIS (Alarm Indication Signal).
Fast flashing
amber MFAS distant alarm.
1T E1 Line 1
interface test
status Red Line loopback test in progress – 1A shows test
status.
Flashing red Channel loopback or pattern test in progress.
Off No test.
2A, 2T, D1
and D2 Reserved for
future use