Paradyne 316x Acquiring/Releasing the Active Physical Interface, User I/F active, User I/F idle

ACCULINK 316x DSU/CSU

Acquiring/Releasing the Active Physical Interface

You can access a user interface from either the front panel, the SDCP (for 3161 DSU/CSUs only), the MODEM port (for 3160/3164 DSU/CSUs only), or the COM port. The 316x DSU/CSU allows only one physical interface to be active at a time. The front panel is the default user interface at power-up, after a reset, during a software download, and after a failure at either the local or remote PC, or async terminal.

If the front panel is disabled, after the self-test the active physical interface defaults to the COM port (if configured for a user interface) or the modem port. During download, the front panel always displays Status.

Possible active interfaces are Ft. Panel (front panel), Com (local PC or async terminal, connected to COM port), and Modem (remote PC, DSU/CSU connected through the MODEM port or async terminal connected to the MODEM port).

You can switch an inactive physical interface to active if one of the following conditions is true:

•The current active physical interface has had no activity (no key was pressed) for at least five minutes.

•The active physical interface has been released with the Release command.

•The active interface connection is broken. This includes the call disconnect for a modem interface or the termination of the front panel emulation program on a locally attached PC (if PC supports DTR) or the termination of the async terminal interface on a remote or locally attached terminal.

Acquiring the Active Physical Interface

To acquire the active physical interface, press any key. If you are using the PC interface, use the mouse to click on the desired Function key.

The top-level menu screen appears on the active physical interface, regardless of what screen was displayed at the previous active physical interface.

DSU ESF

Stat Test Cnfig

F1 F2 F3

The inactive interface displays the following message when a function key is pressed or a connection is made on the inactive physical interface and control cannot be switched because the currently active interface is in use.

DSU Fmt

User I/F active

F1 F2 F3

The inactive interface displays the following message after control has been released from the previously active interface and another interface has not become active.

DSU Fmt

User I/F idle

F1 F2 F3

Releasing the Active Physical Interface

To release the current active physical interface, either allow five minutes to elapse without pressing any key or use the Release command. To use the Release command,

1.Press the key on the top-level menu screen to bring the Ctrl branch onto the front panel LCD.

DSU ESF

Stat Test Cnfig

F1 F2 F3

2.Press F3 to select Ctrl from the top-level menu screen.

DSU ESF

Test Cnfig Ctrl

F1 F2 F3

3-62 December 1996 3160-A2-GB22-10