1.1 General FeaturesFeature Manual 103• It is possible to specify which outside (CO) lines are connected to the PBX ( [400] CO LineConnection). This prevents extension users from trying to select or making calls using outside (CO)lines that are not connected.Programming Manual References[PT Programming][206] Dialing Start Time[400] CO Line Connection[405-407] Flexible Outward Dialing—Day/Night/Lunch[PC Programming]9.1.7 Timers [1-6]—CO Dialing—Dialing Start Time9.3.2 Incoming / Outgoing [3-2]—Outgoing Call—Day, Night, Lunch9.3.3 Detail [3-3]—ConnectionFeature Manual References1.1.61 Flexible ButtonsOperating Manual References1.3.55 Line Access, S-CO Line3.1.3 Flexible Button Assignment—S-CO button1.1.75 Line Preference—IncomingDescriptionA proprietary telephone (PT) user can select the method used to answer incoming calls from the following3 line preferences.Each of these line preferences can be selected by each extension through personal programming (LinePreference—Incoming).Conditions• Ringing methods can be selected from among immediate, delayed, no ringing, or no incoming calls(disable) through system programming ( [408-410] Flexible Ringing—Day/Night/Lunch, [411-413]Delayed Ringing—Day/Night/Lunch).• A single line telephone (SLT) user can select "Ringing Line" mode only.Type DescriptionNo Line A user can select a line by pressing the desired Outside (CO) Line Accessbutton to answer an incoming call after going off-hook.Prime Line A user can answer a call arriving at a flexible CO button (assigned as the"Prime Line") simply by going off-hook.Ringing Line (default) A user can answer a call ringing at one's own telephone simply by goingoff-hook.