Avaya 03-300430 User Manual

f. Error Type 131: An ATM-EI circuit pack has been removed from the slot for 5 minutes.

1. Insert the ATM-EI circuit pack into its administered slot.

2. Another way to resolve or prevent this alarm is to remove the ATM-EI administration (see 

on page 528), then remove the ATM-INTF administration 

(change circuit-pack).

It is possible that the ATM-EI could be held in reset by the PN’s Maintenance board and is 
not inserted in the system.

3. Try issuing test maint P long on the maintenance board in the same PN.

g. Error Type 257: Expansion Interface Control Channel test (#316) failed (board cannot 

communicate on the TDM bus control channel).  Follow the suggested test procedures.

Error Type 258: The archangel is out of sequence (Aux Data indicates angel number).

Error type 259: The expansion archangel link (EAL) to the active ATM-EI board is down.  
See 

h. Error Type 513: The ATM Crosstalk test failed.  The board is either writing to or reading 

from a TDM time slot that is not allocated to the board.  

1. Test the board (test board location), and follow the test procedures suggested for 

this test.  In random tests of a single DSP during low or high traffic, the same DSP can be 
tested more than once.

i. Error Types 769 and 770: are board-degraded alarm errors that result when the ATM 

switch is sending corrupted cells or excessive AAL/LAPD retransmissions (off-board ATM 
cell corruption errors).  These errors indicate the detection of a problem in handling ATM 
cells that are received from the fiber interface.

Aux Data for these Error Types:

The problem is most likely not on the ATM-EI circuit pack reporting the errors, but it could be 
due to one or more of the following reasons:

●

The fiber is not snugly connected to either the board or the ATM switch.

●

The PN’s packet bus is corrupting the cells.  See 

(Aux Data 35 only).

●

The fiber between the ATM switch and the ATM-EI is too long (greater than 2 km for 
multimode fiber).  Use loopback to see if the fiber is corrupting the cells.

769

34

Excessive AAL-5 retransmission requests

769

35

Excessive LAPD retransmission requests

770

25

Uncorrectable ATM cell headers – threshold

771

26

VPI, VCI pair unknown