Features 3-453 Features PProprietary Telephone Setting Data Default SetAllows a proprietary telephone user to reset the following Proprietary Telephone Settings tothe default settings.• Preferred Line Assignment — Outgoing• Preferred Line Assignment — Incoming• Outside (CO) Line Ringing Selection• Intercom Alert Assignment• Call Waiting Tone Selection• Operating Instructions Reference1.2 Proprietary Telephone Settings, “Customizing Your Telephone Functions”,Proprietary Telephone Setting Data Default Set+Preferred Line Assignment — OutgoingA proprietary telephone user can select a desired outgoing line preference to make outsidecalls from the following 3 line preferences. System Programming and Proprietary TelephoneSettings are required.Idle Line Preference: When the user goes off-hook, they are connected to an idle line.An idle line is automatically selected from the pre-assignedlines in program [419].Prime Line Preference: When the user goes off-hook, they are connected to the pre-assigned line. Assign one prime line beforehand.No Line Preference: No line is selected when the user goes off-hook. They mustselect a line to make a call.• Line access button(s) (Single-CO, Other-CO or Group-CO) should be assigned to the CObutton(s) beforehand.• Required System Programming[400] Outside (CO) Line Connection Assignment[405]–[407] Flexible Outward Dialing Assignment — Day/Night/Lunch[419] Automatic Designated Outside (CO) Line Access• Related Feature ReferenceLine Access Buttons• Operating Instructions References1.2 Proprietary Telephone Settings, “Customizing Your Telephone Functions”,Preferred Line Assignment — Outgoing1.2 Proprietary Telephone Settings, “Customizing the Buttons on Your Telephone”,Line Access Buttons+!!