1.15 Optional Device FeaturesFeature Guide 1751.15 Optional Device Features1.15.1 Doorphone CallDescriptionIt is possible to connect doorphones directly to the PBX. When a visitor presses the call button on adoorphone, the doorphone calls a preprogrammed destination (extension or outside party). In addition,extension users can dial the preset number of a doorphone to call that doorphone.Conditions• Hardware Requirement: An optional doorphone and a DPH card• Each doorphone port can only be assigned to one tenant. The Time Table (day/lunch/break/night) ofthe tenant applies. (→ 2.2.4 Time Service)• Call DestinationThe incoming doorphone call destination(s) can be assigned for each time mode (day/lunch/break/night) for each doorphone port. Destinations can be selected. (→ 1.1.2.1 Internal Call Features—SUMMARY)• COS programming determines the doorphone ports that are able to make an outgoing trunk call.• Internal Call Block determines which extensions can call a doorphone. (→ 1.1.2.2 Internal Call Block)• Ring DurationIf an incoming call is not answered within a preprogrammed time period, ringing stops and the call iscancelled.• Call DurationThe call duration can be restricted by a system timer. If the timer expires, the call will be disconnected.• Door OpenWhile engaged on a doorphone call, the extension user can unlock the door to let the visitor in. (→1.15.2 Door Open)• A doorphone number can be referenced for each doorphone port.• Doorphones 1 and 2 (or 3 and 4) cannot make a call simultaneously. If a visitor presses the doorphonebutton while the other doorphone is engaged in a call, he will hear no tone.Doorphones 1 and 2 (or 3 and 4) cannot receive a call simultaneously. If an extension user calls adoorphone while the other doorphone is engaged in a call, he will hear a busy tone.Installation Manual References2.5.1 DPH4 Card (KX-TDA3161)2.5.2 DPH2 Card (KX-TDA3162)2.8.1 Connection of Doorphones, Door Openers, External Sensors, and External RelaysProgramming Manual ReferencesPC Programming Manual3.8.4 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf→ Doorphone—Call Ring Duration→ Doorphone—Call Duration
