Server Alarms - Avaya Support

Circuit Pack LEDs
The yellow LED indicates the state of the fiber interface, the fiber channel, and the DS1 channel
as listed in Table 77: DS1C yellow LED flashing states in order of priority.
Table 77: DS1C yellow LED flashing states
LED
on
LED
off
DS1 Facility LEDs
Condition
0.1 sec 0.1 sec Fiber Out-of-Frame or Fiber Loss of Signal
0.5 sec 0.5 sec In Frame, fiber channel down. The fiber channel communicating between
the DS1C and the other fiber endpoint (EI or SNI) is down.
1 sec 1 sec In Frame, DS1 channel down. The channel between the two DS1Cs in the
DS1C complex is down.
2 sec 0.2 sec No response from the server. The server is not acknowledging messages
from the DS1C or the communications link to the server is down.
solid on DS1C active. This is the normal state for an active DS1C.
solid off DS1C standby. This is the normal state for a standby DS1C in
critical-reliability systems (duplicated PNC).
There are four green LEDs below the three standard LEDs on the DS1C circuit pack which
indicate whether a receive signal is present for each of the four DS1 facilities. Figure 3: TN574
DS1 Converter circuit pack LEDs shows which facility (A, B, C, or D) corresponds to each LED.
If a green LED is off, there is a Loss of Signal condition on the DS1 facility associated with that
LED. The presence of a signal does not guarantee that the signal is using the correct framing
format or line coding. An Alarm Indication Signal indicating that the opposite end of the DS1C
complex is out of service may be present.
Communication Manager Release 5.0 Issue 4 January 2008 301