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Acquiring/Releasing the User Interface
Acquiring the Active User Interface
3166-A2-GB20-20
You can access the user interface from either the the COM port or the SDCP. The
DSU/CSU allows only one user interface to be active at a time. The COM port is
the default user interface at power-up or after a reset. It is also the default during
a software download or when a failure occurs at either the local or remote PC
interface.
You can switch an inactive user interface to active if:
H
The current active user interface has had no activity (no key was pressed) for
at least five minutes.
H
The active user interface has been released with the Release command of
the Control branch.
H
The active interface connection is broken. This includes the termination of the
front panel emulation program on a locally attached PC (if the PC supports
DTR) or the termination of the Asynchronous Terminal Interface on a remote
or locally attached terminal.
To acquire the active user 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 user interface, regardless of what screen was
displayed at the previous active user interface.
DSU ESF
Stat
Test
F1
F2
The inactive interface displays an interface active message when a Function key
is pressed or a connection is made on the inactive user interface and control
cannot be switched because the currently active interface is in use. On the
screen, either Com Port or SDCP is shown as active. For example:
DSU ESF
Com Port active
F1
F2
March 1999
Cnfig
F3
F3
SDCP Operation
3-39
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