To answer a call from the doorphoneOff-hook.PT/SLT/PS/SIP Extn.• For KX-UT series SIP phone users: If the doorphone number and name are stored in thephonebook of your phone, the doorphone information is displayed on your phone when a callarrives from the doorphone.• For KX-UT670 SIP phone users: The video feed from a network camera can be displayedon your phone’s display when a call arrives from a doorphone and the following settings areconfigured on your phone:– The network camera is registered to a contact.– The doorphone number is registered to the contact, and "Doorphone" is selected as thelabel for the phone number.For details about the settings, refer to the documentation for your phone.To call the doorphoneTalk.Off-hook. Enter doorphonenumber (2 digits).doorphone no.Enter 31.3 1 C.TonePT/SLT/PS/SIP Extn.• If no one answers a doorphone call within a specified time period, the call is canceled.1.3.23 EFA (External Feature Access)You can access special features (e.g., Call Waiting offered by a host PBX or telephone company. This featureis only effective for an outside call.86 Operating Manual Document Version 2013-041.3.23 EFA (External Feature Access)