Avaya 03-300430 User Manual

j. Error Type 769: Transmit FIFO Underflow (threshold is 3 errors within 10 minutes); the 

circuit pack cannot find the “end of frame” bit when transmitting a frame to the packet bus.

1. Clear the alarm with:

c. test board location long clear

2. If the error recurs within 10 minutes, replace the circuit pack. See 

on page 1529 before removing the circuit pack.

k. Error Type 770: Unable to Write LAN Translation RAM (threshold is 2 errors within 10 

minutes); a call is aborted because there are no available translation RAM locations for the 
call connection attempt.

1. Clear the alarm with:

c. test board location long clear

2. If the error recurs within 10 minutes, replace the circuit pack. See 

on page 1529 before removing the circuit pack.

l. Error Type 1537: There was a LAN Bus Timeout because the circuit pack transmitted too 

many bytes on the LAN bus for a single frame. This condition may be caused by:

●

an on-board fault

●

faulty data received on one of the circuit pack’s external ports. If any of the ports on this 
circuit pack are alarmed, refer to the repair procedures for those MOs.

If the error occurs 3 times within 10 minutes, the system raises the board alarm and isolates 
it from the packet bus.

1. Clear the alarm and restore the board to the packet bus:

c. test board location long clear

2. If the problem persists, and there are no PKT-BUS alarms or port alarms, replace the 

circuit pack. See 

on page 1529 before removing the 

circuit pack.