Avaya 8400B Plus User Manual

Troubleshooting

Issue 2   November 1996

Call disconnects 
immediately after an 
attempt to connect; 
NO CARRIER may 
be displayed on the 
local terminal 
device; green LED 
turns off, red LED is 
on.

The speed of the 
far-end device is 
higher than the 
speed of the local 
terminal device.

Change the speed of the local terminal 
device to match that of the far-end 
device. If the speed of the far-end 
device is not known, set the local 
terminal device to the highest speed 
available.

The far-end device 
is set up for 
half-duplex or 
synchronous 
operation.

The 8400B Plus Data Module cannot 
communicate with a far-end device that 
is operating half-duplex or 
synchronous. This problem can be 
resolved only if the far-end device can 
be reconfigured for full-duplex, 
asynchronous operation.

Troubleshooting Guidelines — Continued