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Video door-phone

Video door-phone

Video door-phone (also known as video door entry or video intercom) is a stand-alone intercom system used to manage calls made at the entrance to a building (residential complex detached family home, workplace, etc.) with access controlled by audiovisual communication between the inside and outside. The main feature of video door entry is that it enables the person indoors to identify the visitor and, if (and only if) they wish, engage in conversation and/or open the door to allow access to the person calling.

Equipment needed :

Video door entry consists of both outside and indoor elements: an outdoor panel on the outside, an electronic lock release and an indoor monitor. The outdoor panel or street panel is installed beside the entrance door or gateway and incorporates different elements ready for use in any climate conditions: one or several pushbuttons to make the call (usually one per home or apartment), a micro camera adapted for night vision to capture the image of the caller, a microphone to pick up their voice and a speaker to reproduce the voice of the occupant indoors. A video door entry panel may include push buttons to call the homes or offices and a camera to capture the street scene. The video entry monitor allows the occupant to see who has called, talk to the visitor and open the door. Installed indoors, the monitor consists of a screen showing the image of the person calling, a microphone and earpiece for conversation and a pushbutton to trigger the door lock release. The communication set up is full duplex. The electric door release is a device installed in the door lock and operated from inside the building to lift the latch and clear the way for the visitor.

Video door phone can be classified two possible classification :

1. Security layers :

a. Level 1 security – This is security layer added by VDP system at the community entrance. This layer is given to the guard who will directly verify the entry of a visitor to the community. Such systems are only at a community level.

b. Level 2 Security : This is also known as the lobby security – This is to get access to your lobby of the apartment in such a case the visitor will have to dial the number of the flat and then the flat owner allows the access to a visitor from the lobby entrance itself.

c. Level 3 security : In this case the visitor communicates with the outdoor camera in front of house door or villa gate.


2. Technologies & classification :

a. Standalone – A standalone VDP is a device used in villas or by individual home owners.

Types of technology of standalone VDP :

i. Analog VDP – It is an analog display and camera.

ii.Connected digital VDP – This is a digital LCD display with Digital camera usually with image capture and video capturing ability when the bell is pressed. In this case normally some additional camera integration is also allowed.

iii. Wireless video door bell(VDB) : A camera units which gets connected to interned or router and allows communication with ones mobile or tablet top communicate with the visitor.


b. Multi-apartment- This is a solution where there is an mass housing scenario.

i. Analog Multi-apartment systems – This is an Analog VDP providing 3 tier security.

ii. IP VDP Multi-apartment system – This is IP VDP which is 3 tier security and integration with BMS (Building management system ), Security systems like intrusion , CCTV building security and in most cases even Home Automation.

SCHEMATIC OF VIDEO DOOR PHONE :




US-140130486-1