1.4 D70 Feature ManualOperating Manual References1.3.20 Door Open1.4.10 Doorphone CallDescriptionA visitor can use a doorphone to call its preprogrammed destination. Extension users can call a doorphone.Conditions• Hardware Requirement:An optional doorphone and a DPH card• Call DestinationThe destination of doorphone calls can be assigned to each doorphone port for each time mode. TheTime Table is determined by the tenant number assigned to each doorphone port. (→ 1.17.4 TimeService)The following destinations cannot be the destination for doorphone calls:– Floating Extension no. for SVM– DISA– Analog Remote Maintenance• Class of Service (COS) programming determines the doorphone ports that are able to make anoutgoing CO line call.• Internal Call Block determines which extensions can call a doorphone. (→ 1.9.12 Internal Call Block)• Ring DurationIf an incoming doorphone call is not answered within a preprogrammed time period, ringing stops andthe call is canceled.• Call DurationThe duration of doorphone calls can be restricted by a system timer. If the timer expires, the call will bedisconnected.• Door OpenWhile engaged on a doorphone call, an extension user can unlock the door to let the visitor in. (→ 1.4.9Door 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-TAW84861)2.8.1 Connection of Doorphones, Door Openers, External Sensors, and External RelaysProgramming ReferencesPC Programming Manual2.8.4 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf
