Verilink NCC 2020 (880-503284-001) Product Manual - Manual (Page 37)

Configuration
Verilink NCC 2020 User Manual 3-15
For details on using Node Manager to upgrade an NCC 2020 or the
other modules it controls, refer to the
Node Manager User Manual .
Thumbwheel Switches
The thumbwheel switches on the front panel of the NCC 2020 are
provided as a measure of last resort for configuring the NCC,
and/or application modules it controls, when terminal access to
the Craft interface is not possible.
It is preferred practice to use the Craft interface or a network
management program instead of the thumbwheels.
Thumbwheel
Procedure
A four-step procedure is used for each thumbwheel command:
1. Set the thumbwheel to the number, 01 through 30, equal to the
slot number of the module to be configured. If a node consists
of multi-line shelves, the first slot in shelf two would be
numbered as 14 and the last slot 26. In a node consisting of all
dual-line shelves, the first (left-hand) slot of a second shelf is
number 03.
2. Rapidly press the EXE pushbutton twice, as if double-clicking a
mouse. If the NCC 2020 accepts your double-click, the STAT
LED on the selected module will begin to blink green to off. If
the STAT LED does not begin to blink, try double clicking again
at a slightly faster or slower rate. Do not proceed to step 3
until the STAT LED on the desired module begins to blink.
Once the STAT LED does begin to blink, steps 3 and 4 must be
completed within 60 seconds or the thumbwheel command
procedure will time-out.
3. Set the thumbwheel switches to the command value to be
used, per Table 3-7 below.
4. Double-click the EXE pushbutton again. If the NCC 2020
module accepts your double-click, the STAT LED on the
selected module will stop blinking green to off and will return
to some other state. If the STAT LED on the module continues
to blink green to off, the NCC 2020 did not accept your double-
click. Try double-clicking again, at a faster or slower rate. If
you are not successful within 60 seconds of the time you
selected the module in step 2, the module will timeout and
return to its normal state. If this happens, start over with step
1 of this procedure.
Thumbwheel
Commands
Table 3-7 lists the commands available through the front panel
thumbwheels.