Chapter 3. Operation3-8 TSU 120 User Manual 61202129L1-1The equal symbol after LBO in the second line indicates theinformation that follows is displayed data and cannot beedited.Exit Any Menu Field Operation Or DisplayPress Cancel as many times as needed to return to the desiredmenu level or press Shift+0 (Home) to return to the main menu.Data Port IdentificationWhen configuring the unit, menu selections will includeoptions from data port submenus. Selecting data ports is neces-sary because the TSU 120 uses a slot-port method to identifywhich data port the menu item is referencing. If a module con-taining a PBX DSX-1 option card with an Nx56/64 plug-oninterface is installed in the option slot, it would be designatedas:DSX-1 Passthru=1.1Where slot=1 and port =1.The DSX-1 is located in the option slot and is the first port inthat slot.Nx56/64=1.2Where slot=1 and port=2.The Nx is located in the slot and is the second port in thatslot.The ports that are built into the TSU 120 are referenced as Slot0. The Nx56/64 would be designated as 0.1 and the DSX-1would be referenced as 0.2.
