• 3006 Trunk Port Doorphone
• 3008 Doorphone Station Port
• 3026 Doorphone Trunk Port with Latch Driver

This trunk port doorphone connects to a dedicated telephone system trunk port or single line telephone for intercom communication through the telephone.

Pressing the call button of the door station initiates ringing into the telephone system. The ring cadence and number of ring cycles are selectable with this doorphone. A high quality speakerphone circuit provides excellent voice quality and hands-free communication.

Door release through the telephone can be achieved with the optional 3106 Door Control Module ("latch driver") which provides relay contacts that operate from DTMF command.

The Doorphone Station Port connects to an analog station port and simulates a single line telephone set. Voice communication is established by ringing the doorphone port or pressing the call button which initiates an off-hook condition and relies on routing provided by the host telephone system. Disconnect is achieved by time out or monitoring the loop current for disconnect supervision.

Door release is possible by addition of the optional 3106 Door Control Module.

The 3026 Doorphone provides intercom capability for a telephone system through a spare trunk port. Calls are made by pressing the call button at the door station which causes the control unit to initiate ringing to the trunk port.

This Doorphone model is similar to the popular 3006 Doorphone introduced in 1988 except that the control unit includes a door control relay activated by the digit "6".

This is a trunk port model intended to occupy a trunk port on a key or PBX telephone system. The 3026 Doorphone cannot be used with the 3106 Door Control Module.