Avaya S8700 - Page 1000

Maintenance-Object Repair Procedures
555-233-143
8-278 Issue 1 May 2002
Table 8-120. Error type 1281 Aux Data and repair procedures
Aux
Data
Alarm
Description Repair procedure
15 SYSCLOCK failed The board is not locked to the TDM backplane clock signal. This is
probably due to a Tone-Clock problem.
1. Check for TDM-BUS or TONE-BD errors in the Error Log.
2. If no other problems are present, reset the circuit pack (reset
board UUCSS)
16 Loss of Signal:
LOS
The fiber is not connected properly to the ATM-TRK board or ATM
switch (or to the multiplexer section [MUX] if present).It is possible
that the board transceivers are not functioning properly.
1. Run test board UUCSS command.
2. If Test #1259 fails with Error Code 16, connect a fiber
back-to-back in a looped mode (one strand of fiber connecting
the transmit transceiver to the receive transceiver of the board)
and see if the amber LED flash goes away. If it does the
problem is off-board.
3. If the amber LED continues to flash, replace the circuit pack.
17 Loss of Frame:
LOF
The fiber signal cannot obtain or maintain STM-1/OC-3 framing.
1. Try to more the fiber on the ATM switch side to a different port.
2. If the problem persists, reset the circuit pack (reset board
UUCSS).
18 Multiplexer
Section Alarm
Indication Signal:
MS_AIS
There is a major problem on the far end (between multiplexer
section [MUX] and the switch) that prohibits the circuit pack from
sending a valid signal.
1. See if the ports at the MUX and/or the ATM switch are
connected snugly.
2. Run test board UUCSS command
3. If Test #1259 fails with Error Code 18, connect a fiber
back-to-back in a looped mode (one strand of fiber connecting
the transmit transceiver to the receive transceiver of the board)
and see if the amber LED flash goes away.
4. If it does the problem is off-board.
5. If the amber LED continues to flash, replace the circuit pack; if
the error persists, escalate the problem.
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