Telephone Category

A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from Greek: (tle, far) and (phn, voice), together meaning distant voice. A common short form of the term is phone, which came into use almost immediately after the first patent was issued. In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business, government, and in households. The essential elements of a telephone are a microphone (transmitter) to speak into and an earphone (receiver) which reproduces the voice in a distant location. In addition, most telephones contain a ringer to announce an incoming telephone call, and a dial or keypad to enter a telephone number when initiating a call to another telephone. The receiver and transmitter are usually built into a handset which is held up to the ear and mouth during conversation. The dial may be located either on the handset or on a base unit to which the handset is connected. The transmitter converts the sound waves to electrical signals which are sent through a telephone network to the receiving telephone, which converts the signals into audible sound in the receiver or sometimes a loudspeaker.

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    Telecommunication Brand Voicemail Iphone
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    Call Box Symbol Communication Diagram
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    Downloads: 18
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    Helpdesk Pager Smartphone Computer Icons
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    Downloads: 19
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    Email Address Area Google Account
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    Red Google Account Telemarketer Telephone
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    Numero Booth Simple Mail Transfer
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    Telephone Kiosk Brand Telephone Number
    Resolution: 601x695
    Size: 19.37KB
    Downloads: 1
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    Telefonica Telephone Android Phonebook
    Resolution: 512x512
    Size: 1.00MB
    Downloads: 11
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    Skype Symbol Teletypewriter Mobile Phones
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    Size: 112.09KB
    Downloads: 16
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    Cellular Rectangle Skype Telephone Book
    Resolution: 1080x1080
    Size: 26.78KB
    Downloads: 22
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    Telegraphy Telephone Operator Mobile Phones
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    Size: 154.60KB
    Downloads: 17
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    Whatsapp Pbx Fax Grass
    Resolution: 500x500
    Size: 9.40KB
    Downloads: 23
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    Calls Telephony Android Smartphone
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    Size: 1.02MB
    Downloads: 13
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    Black Fax Circle Telephone
    Resolution: 1450x1450
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    Downloads: 8
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    Website Iphone Communication Ringing
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    Telephone Box Symbol Technology Graphic
    Resolution: 610x917
    Size: 231.29KB
    Downloads: 1
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    Caller Id Electronic Device Mobile
    Resolution: 1000x1000
    Size: 692.79KB
    Downloads: 28
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    Area Text Encapsulated Telephone
    Resolution: 512x512
    Size: 7.90KB
    Downloads: 37
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