Avaya 8400B Plus User Manual
Isolating Problems Using Loopback Data Tests
D-14
Issue 2 November 1996
You should now disconnect the terminal from the 8400B Plus Data Module. The
8400B Plus Data Module will retain the option settings during power removal.
8400B Plus Data Module will retain the option settings during power removal.
A loopback plug must now be connected to the EIA Connector Interface of the
8400B Plus Data Module. A loopback plug connects pin number 2 to pin
number 3 on the 8400B Plus Data Module’s EIA Interface using a modified 9-pin
connector. The modified connector is shown in
8400B Plus Data Module. A loopback plug connects pin number 2 to pin
number 3 on the 8400B Plus Data Module’s EIA Interface using a modified 9-pin
connector. The modified connector is shown in
Figure D-9. 9-Pin Connector Wired as a Loopback Plug
Using the Loop-Around Data Test
Arrangement
Arrangement
The user calls the Loop-Around Data Test Arrangement from a terminal/PC.
Once connected, the user checks to see if characters entered from the
keyboard are successfully echoed back. If the terminal/PC is set for full duplex
and the user types in
Once connected, the user checks to see if characters entered from the
keyboard are successfully echoed back. If the terminal/PC is set for full duplex
and the user types in
The cat
then
The cat
is echoed back in a successful test.