Testing7-8 7612-A2-GB20-00June 1997Device ResetThe DSU can be reset locally or remotely. From the Control menu, select ResetDevice and press Return, then answer Yes to the verification message. The DSUreinitializes itself, performing a Device Self-Test. Refer to Self-Test ResultsMessages, Table 6-2, in Chapter 6.Configuring the DSU improperly could make the user interface inaccessible,leaving it in a state where an ATI session cannot be started through the Terminalport or via a Telnet session. If this occurs, DSU connectivity can be restored witha terminal that is directly connected and set for Terminal Port option defaults.Two methods can be used to restore access to the ATI. Both methods cause adevice reset. Reset Terminal Port – Allows you to only reset the configuration optionsrelated to Terminal port usage. No security-related configuration options arechanged. Refer to Terminal Port Options, Table A-5, for defaults. Reload Factory Defaults – Allows you to reload the Default FactoryConfigurations, resetting all of the configuration areas and control settings forsecurity reasons. This method is useful when the user’s passwords havebeen forgotten. ProcedureTo reset Terminal port settings:1. At the asynchronous terminal connected to the Terminal port, verify that theterminal’s options are set to the default settings:— Data Rate(Kbps) to 9.6— Character Length to 8— Stop Bits to 1— Parity to None2. Power the DSU Off and back On. The DSU performs a power-up routine.3. Immediately after the OK and TEST LEDs light up, press the Return key5 times quickly in succession. The System Paused screen appears.
