Avaya Definity SI Maintenance Manual page 1021

ATM-TRK (Circuit Emulation Service Circuit Pack)
Table 10-93. Error type 1281 Aux Data and repair procedures — Continued
Aux Alarm
Data Description
20 Loss of pointer:
LOP
21 Path Signal Error
(PSL)
(STM1/SONET)
22 High-level Path
Alarm Indication
Signal:
HP_AIS
23 High-level path
Remote defect
Indicator: HP_RDI
24 Loss of cell
delineation (LCD)
555-233-123
Repair procedure
ATM framer chip is unable to access the payload part of the signal.
Reset the board (reset board UUCSS).
If the error persists replace the board.
The incoming signal payload is not set up for transmission of ATM
data.
Make sure the ATM switch port (or a MUX port, if present between
ATM switch and the ATM-TRK board) is the same as the ATM-TRK
circuit pack's cable interface.
The payload is invalid.
Make sure the ATM switch port (or a MUX port, if present between
ATM switch and the ATM-TRK board) is the same as the ATM-TRK
circuit pack's cable interface.
Run test board UUCSS.
If Test #1259 fails with Error Code 22, 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
yellow LED flash goes away.
If it does the problem is off-board.
If the yellow LED continues to flash, replace the circuit pack.
The far-end is detecting a major problem with the signal that this
board is transmitting. The transmitted payload is invalid.
Make sure the ATM switch port (or a MUX port, if present between
ATM switch and the ATM-TRK board) is the same as the ATM-TRK
circuit pack's cable interface.
Run test board UUCSS command; if the Test #1259 fails with Error
Code 23, 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 yellow LED flash goes away.
If it does the problem is off-board.
If the yellow LED continues to flash, replace the circuit pack.
On board ATM framer chip is not able to frame cells based on the
cell header.
Reset the board (reset board UUCSS).
If the error persists, replace the board.
Continued on next page
Issue 4 May 2002 10-235