Operation
3-35
3170-A2-GB20-20
December 1996
F1
Clock Rate:2048
Next
2048
8
F2
F3
Acquiring/Releasing
the User Interface
You can access the user interface from either the front
panel or the COM port. The E1 DSU/CSU allows only
one user interface to be active at a time. The front panel 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,
•
The current active user interface has had no activity
(no key was pressed) for at least five minutes,
and/or
•
The active user interface has been released with the
Release command.
Acquiring the Active User Interface
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.
F1
DSU E1 CEPT
Stat
Test
Cnfig
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F3
The inactive interface displays the following 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 Ft. Panel (front panel) or COM Port
is displayed in the user interface (User I/F) field.
F1
DSU E1 CEPT
User I/F active
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.
F1
DSU E1 CEPT
User I/F idle
F2
F3
Releasing the Active User Interface
To release the current active user 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.
F1
DSU E1 CEPT
Stat
Test
Cnfig
F2
F3
2. Press F3 to select Ctrl from the top-level menu
screen.
F1
DSU E1 CEPT
Test
Cnfig
Ctrl
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F3