1.4.1.2 Line Preference—IncomingDescriptionA PT user can select the method used to answer incoming calls from the following three line preferences:Each of these line preferences can be assigned on each extension through personal programming (PreferredLine Assignment—Incoming).Type DescriptionNo Line Select a line by pressing the desired Line Access button toanswer an incoming call after you go off-hook.PDN Answers a call arriving at a Primary Directory Number (PDN)button simply by going off-hook. This works even when multiplecalls are received simultaneously.(® 1.7.1 Primary Directory Number (PDN)/Secondary DirectoryNumber (SDN) Extension)Prime Line Answer a call arriving at a CO or ICD Group button (on which the"Prime Line" is assigned) simply by going off-hook. This workseven when multiple calls are received simultaneously.Ringing Line (default) Answer the longest ringing call at one’s telephone simply by goingoff-hook when multiple calls arrive.Conditions[Prime Line]• The priority of the incoming call is as follows:1. The call arriving at a button on which the "Prime Line" is assigned.2. The call arriving at the INTERCOM button.PC Programming Manual References6.1 [4-1-1] Wired Extension—Extension Settings—Option 4— Incoming Preferred Line6.10 [4-2-1] Portable Station—Extension Settings—Option 4— Incoming Preferred LineUser Manual References3.1.2 Settings on the Programming ModeFeature Guide 771.4.1 Answering Features