Avaya 03-300430 User Manual

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 location.

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.

19

Multiplexer 

Section 

Remote Defect 

Indicator: 

MS_RDI

The far end is detecting a major problem with the signal that this 

board is transmitting.

1. 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 

2. Run test board location.

3. If Test #1259 fails with Error Code 19, 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.

20

Loss of pointer: 

LOP

ATM framer chip is unable to access the payload part of the signal.

1. Reset the board with reset board location.

2. If the error persists replace the board.

21

Path Signal 

Error (PSL) 

(STM1/

SONET)

The incoming signal payload is not set up for transmission of ATM 

data.

1. 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.

 2 of 3