ADTRAN TSU 120e - Manual (Page 72)

Chapter 5. Configuration Menu
5-14 TSU 120 User Manual 61202129L1-1
Map Exchange (Map Xchng)
The M AP E XCHANGE menu enables and sets the automatic time
of day map switch. The unit provides selection of the hour,
minute, and seconds for the map switching to take place.
The menu items are:
1. Scroll to select AUTO to enable or OFF to disable the
Automatic Map Change feature.
2. Press Enter to activate the selection.
3. When AUTO is selected, the unit displays the screens to
set times for switching.
4. After editing Map A, press Enter to record the Map A
settings and activate the selection fields for Map B.
5. Use the same operation to edit switching time for
Map B.
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. Only one end needs to be set to Auto for this to work.
Map In Use: A(B)
The M AP IN U SE menu item controls the DS0 map the TSU 120
uses and displays the map in current use.
Menu Item Description
OFF Indicates the map in use does not change
(disabled).
AUTO Indicates that the map in use will change at a
user-selected time of day (enabled).