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Revision 01 Section 350-231-134
HLU-231 List 3D 7
Using the Craft port
The Craft port, a 9-pin RS-232 connector, on the HLU-231 front panel allows
you to use a standard RS-232 cable to connect your system to a dumb terminal
or PC running a terminal emulation program. Once connected you can access
the maintenance, provisioning, and performance screens.
To provision the HLU-231 through the Craft port:
1
Configure the dumb terminal to the following communication settings:
• 1200 to 9600 baud (9600 baud is recommended)
• Parity: NONE
• 8 data bits
• 1 stop bit
• Hardware Flow Control set to NONE
• VT Terminal Emulation
2
Use a serial cable to connect the RS-232 COM port on the dumb terminal
to the HLU-231 front panel Craft port.
3
On each screen, enter the key represented by the letter in parenthesis for
the parameter to be changed.
• Each entry of this letter scrolls the parameter to its next value.
• After all selections have been made, press to exit and to con-
firm the changes. This activates the new choices and returns control
to the Main Menu screen.
The following four user options must be set via the dumb terminal interface:
Circuit ID, Time and Date, DS0 Blocking, and Margin Alarm Threshold.
If using the Microsoft Windows terminal emulation program,
from the Settings, Terminal Preference menu, deselect
Show Scroll Bars and Use Function, Arrow, and Ctrl Keys for
Windows.
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