Avaya Definity SI Maintenance Manual page 1018

Maintenance Object Repair Procedures
d. Error Type 125: an ATM trunk is administered but a non-ATM-TRK circuit
pack is installed in the corresponding slot. You have two options:
e. Error Type 257: Control Channel Loop Test #52 failed. The circuit pack is
not properly connected with the control channel on the TDM bus.
1. Take the corrective action specified by Test #52.
f. Error Type 513: ATM Crosstalk Test (#1298) failed. The board is writing to
or reading from a TDM time slot that is not allocated to the board, or the
Digital Signal Processor (DSP) selected for this test has malfunctioned.
1. Run test board UUCSS .
2. Take the corrective action specified for Test #1298.
g. Error Type 769, 770: the ATM switch is requesting too many LAPD
retransmissions (off-board ATM cell corruption errors).
Error
Type
769
770
1. Check the connections between the fiber cable, the ATM-TRK circuit
2. See PKT-BUS (Packet Bus) for test and corrective procedures.
3. Determine what type of fiber is installed between the ATM-TRK
10-232 Issue 4 May 2002
Replace the incorrect circuit pack with an ATM-TRK circuit pack.
Or re-administer the slot for the circuit pack that is physically
present, locate the slot where the ATM-TRK circuit pack is actually
installed, and re-administer the ATM trunk.
Aux
Data Description
35 LAPD excessive retransmission requests
25 ATM uncorrectable cell headers - threshold
pack, and the ATM switch.
circuit pack and the ATM switch.
If
There is multimode fiber
There is single-mode fiber or
the length of the multimode
fiber is less than 2 km
Then
Check the length of the fiber. If the
cable is longer than 2 km, it is probably
causing the errors.
The source of the errors can lie in the
ATM facility, the ATM-TRK circuit
pack, or the far-end circuit pack.
555-233-123