Bay Networks Remote Annex 4000, Hardware Installation Manual

Page: 98 / 162

Remote Annex 4000 Hardware Installation Guide
Chapter 3 ROM Monitor Commands
3-26
ports
The ports command tests serial line ports, exercising both the data
lines and the control lines for each serial port specified. The syntax
for this command is:
ports [–d]
Each serial port to be tested must be looped-back with a PBX loopback
plug to test both the data lines and the control lines (the accessory kit
provides a PBX loopback plug). Attach this plug to the PBX connector
on the rear panel of the Remote Annex 4000 that corresponds to the
port to be tested.
Do not run the ports command for a port to which a device is
connected. The test will transmit data to the device and toggle
its control lines.
When invoked, the command displays a menu of options. The
following sample screen display is for a Remote Annex 4000 with 72
asynchronous serial ports and a printer port.
(continued on next page)
monitor:: ports
Individual Port Tests (Data And Control Lines)
Some important notes:
- All Serial Ports (1-72) which are to be tested require
a loopback plug in order to pass the Data Line and Control
Line loopback tests.
WARNING. If there is a device instead of a loopback plug
connected to the port being tested, the device will have
data transmitted to it and its Control Line toggled.
- The Printer Port does not require a loopback plug.
1) Async Serial Ports
2) Printer Port
Selection (Return to exit):: 1
W
ARNING