ADTRAN ISU 128 user manual Chapter Operation, Menu Navigation

Chapter 4

Operation

MENU NAVIGATION

Four function keys on the left-hand side of the keypad allow the user to enter, exit, and scroll through the various menu branches. The four function keys are defined below.

Enter	Enters the selected item.
Up Arrow	Scrolls up a menu tree.
Down Arrow	Scrolls down a menu tree.
Cancel	Exits (back one level) from the current branch of
	the menu tree.

For reading ease, function keys are represented in bold, initial caps text. Selectable menu items and messages displayed on the LCD are represented in bold type as they appear on the LCD.

Press either the Up or Down arrow to scroll through the menu tree. To choose an item, press the corresponding number on the keypad. The item blinks to show that it is selected and has been stored in non-volatile memory. Press En- ter to select the item. Press Cancel to exit back through the menu tree.

It is important to note that some features in the ISU 128 do not immediately take effect upon selection. This prevents unintentional reconfiguration of the ISU 128 during an active call. Leased/Dial Line, and ISDN Switch Protocl, take effect only when the ISU is powered up or the U-interface is bounced (line broken and restored). To ensure the ISU is actually performing as configured, cycle the power off, then back on again, after these items are changed. Also, items such as Bit Rate, Protocol, and Call Type take effect only at the begin- ning of a new call.

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