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Viera Cast is a Smart TV platform by Panasonic that makes it possible to stream multimedia content from the Internet directly into select Viera HDTVs and Blu-ray players. It was announced during the January 2008 exhibition of the Consumer Electronics Show (CES) in Las Vegas [1] and began rolling out in Panasonic Viera TVs several months later.
A user could select any available telephone line by pressing the appropriate pickup key and taking the handset off-hook. While on a telephone call, a user could place the call on hold by pressing the hold button, which also released the depressed line button mechanically, enabling the user to select another line for placing a call.
On analog telephone lines with special services, a flash or register-recall signal is used to control functions on the public telephone exchange, PBX or VoIP ATA.. The term "register-recall" in Europe refers to sending a discrete signal to alert the "register" — the logical system controlling a telephone exchange, that it should accept commands from the end user in the middle of a call.
Pressing a single key of a traditional analog telephone keypad produces a telephony signaling event to the remote switching system. For touchtone service, the signal is a dual-tone multi-frequency signaling tone consisting of two simultaneous pure tone sinusoidal frequencies. The row in which the key appears determines the low-frequency ...
In specialized models, a commercial mobile network operator may maintain base stations and users subscribe to the service. Unlike a corded telephone, a cordless telephone needs mains electricity (to power the base station). The cordless handset contains a rechargeable battery, which the base station re-charges when the handset rests in its ...
A push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to a rotary dial used in earlier telephones.. Western Electric experimented as early as 1941 with methods of using mechanically activated reeds to produce two tones for each of the ten digits and by the late 1940s such technology was field-tested in a No. 5 Crossbar switching system in ...
Call pick-up is a feature used in a telephone system that allows one to answer someone else's telephone call. The feature is accessed by pressing a pre-programmed button (usually labelled "Pick-Up"), or by pressing a special sequence of buttons on the telephone set. In places where call pick-up is used, the telephone sets may be divided into ...
Key pad of a Nokia 3720. Besides the number keypad and buttons for accepting and declining calls (typically from left to right and coloured green and red respectively), button mobile phones commonly feature two option keys, one to the left and one to the right, and a four-directional D-pad which may feature a center button which acts in resemblance to an "Enter" and "OK" button.