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2. Video door-phone - Wikipedia

   en.wikipedia.org/wiki/Video_door-phone

   A video door-phone (also known as a 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 ...

3. History of videotelephony - Wikipedia

   en.wikipedia.org/wiki/History_of_videotelephony

   [67] [68] The camera phone was the same size as similar contemporary mobile phones, but sported a large camera lens and a 5 cm (2 inch) colour TFT display capable of displaying 65,000 colors, and was able to process two video frames per second. The 155 gram (5.5 oz.) camera could also take 20 photos and convey them by e-mail, with the camera ...

4. Iris 3000 Videophone - Wikipedia

   en.wikipedia.org/wiki/Iris_3000_Videophone

   Iris 3000 Videophone. The Iris 3000 is a SIP videophone manufactured by UMEC for ACN Inc. It features a 7-inch screen, CMOS Camera, an idle-time photo frame, and a standard phone jack to attach it to a cordless telephone for use throughout a home. It uses high-speed internet (DSL or cable) to connect with the service provider's network and ...

5. Videotelephony - Wikipedia

   en.wikipedia.org/wiki/Videotelephony

   Videophones are standalone devices for video calling (compare Telephone). In the present day, devices like smartphones and computers are capable of video calling, reducing the demand for separate videophones. Videoconferencing implies group communication. [2] Videoconferencing is used in telepresence, whose goal is to create the illusion that ...

6. Door phone - Wikipedia

   en.wikipedia.org/wiki/Door_phone

   Outdoor phone plate at the building's entrance Outdoor phone plate with camera at video door phone. A door phone or door bell phone is a set of electrical and electronic elements used to handle communication between a resident in a house, apartment or villa and a guest outside. The device can also lock or unlock the door it has been configured ...

7. Intercom - Wikipedia

   en.wikipedia.org/wiki/Intercom

   An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building, small collection of buildings or portably within a small coverage area, which functions independently of the public telephone network. [1] Intercoms are generally mounted permanently in ...