ADTRAN TSU 120, User Manual

Page: 80 / 143

Chapter 3. Operation
66
TSU 120 User Manual 61200.129L1-1
@
@
Figure 3-13
Selection Times for Map Exchange
With the cursor on 1)Map A, press Enter to activate
the selection fields for hour and minute. The cursor
first moves to the hour position. Type in numbers and
press Enter. The selected hour is entered and the
cursor moves to the minute position. Set minutes by
the same method as used to set the hours; seconds are
defaulted to zero (0).
If a number is mistakenly entered, pressing Cancel
interrupts the editing process. The procedure can be
restarted to accept correct entries.
When using one digit numbers, the number appears
in the first of two spaces. Upon pressing Enter, the
system moves the single number to the second space
and fills the first with a zero.
After editing Map A, press Enter to record the Map A
settings and activate the selection fields for Map B.
Use the same operation to edit switching time for Map
B.
After settings for both Maps A and B are completed,
press Cancel to returns to 3)MAP XCHNG.
Continue with standard operating procedures.
When ESF is used with an FDL channel between units, the
units automatically coordinate the automatic map switch by
sending a map switch command from end-to-end over the
FDL.