Configuration: 4 Lines 16 extensions can not be expanded features: · a · 10 seconds Caller single segment computer operator to manually set the recording mode · night · External music on hold · · piano music ringtones feature outside turn outside · · External music interface basic functions: multiple communication path · ordinary power cord (transformer) · · Outside Caller straight power failure · · distal internal music on hold power and memory ? System Programming Password * A variety of ways out outside groups · · · Call Time Control grab the phone * substituting for outside ? Call Transfer · Busy off-site transfer ? Extension resilient coding ? Do Not Disturb function · Automatic Extension News flash time setting number · · · Call barring an extension ring set three-way calling · · · Selection Paging function dial * Reservations and tone recognition outside the perimeter reserved · · · outside monitor settings Switchboard