Paradyne CSU, DSU, 9126-II, 9128-II Restoring Communication with an Improperly Configured Unit

8. Troubleshooting

Restoring Communication with an Improperly Configured Unit

Configuring the unit improperly could render the menu-driven user interface inaccessible. If this occurs, connectivity to the unit can be restored via a directly connected asynchronous terminal.

Procedure

To reset COM port settings:

1.Configure the asynchronous terminal to operate at 19.2 Kbps, using character length of 8 bits, with one stop-bit, and no parity. In addition, set Flow Control to None.

2.Reset the unit, then hold the Enter key down until the System Paused screen appears. (See Resetting the Unit and Restoring Communication on page 8-3for other methods of resetting the unit.)

3.Tab to the desired prompt, and type y (Yes) at one of the prompts.

If selecting . . .	he following occurs . . .
Reset COM Port usage	Port Use is set to Terminal so the asynchronous
	terminal can be used.
	Data Rate (Kbps), Character Length, Stop Bits, and
	Parity are reset to the factory defaults.
	Unit resets itself.
Reload Factory Defaults	All configuration and control settings are reset to the
	Default Factory Configuration, overwriting the
	Tcurrent configuration.
	Unit resets itself.
	CAUTION: This causes the current configuration to be
	destroyed and a self-test to be performed.

If no selection is made within 30 seconds, or if No (n) is entered, the unit resets itself and no configuration changes are made.

Once the unit resets itself, connectivity is restored and the Main Menu screen appears.

8-4 September 2002 9128-A2-GB20-80