Chapter 5. Configuration Menu

After editing Map A, press Enter to record the Map A set- tings and activate the selection fields for Map B. 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

This menu item controls the DS0 map the TDU 120e uses and displays the map in current use.

DS0 Map A and DS0 Map B

The DS0 maps designate which DS0s are assigned to which port. The three maps are:

DS0 Map A

Default map.

DS0 Map B

Alternate map.

Temp

Temporary map used as a scratch pad.

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TDU 120e User Manual

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ADTRAN TDU 120e user manual Map In Use, DS0 Map a and DS0 Map B, Temp