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  2. Telephone - Wikipedia

    en.wikipedia.org/wiki/Telephone

    A satellite telephone, or satphone, is a type of mobile phone that connects to other phones or the telephone network by radio link through satellites orbiting the Earth instead of terrestrial cell sites, as cellphones do. Therefore, they can work in most geographic locations on the Earth's surface, as long as open sky and the line-of-sight ...

  3. Telephony - Wikipedia

    en.wikipedia.org/wiki/Telephony

    Telephony is commonly referred to as the construction or operation of telephones and telephonic systems and as a system of telecommunications in which telephonic equipment is employed in the transmission of speech or other sound between points, with or without the use of wires. [1]

  4. Cordless telephone - Wikipedia

    en.wikipedia.org/wiki/Cordless_telephone

    Analog equivalents do exist and can provide longer reach, but with potential loss of confidentiality and voice quality. The cordless phone handset connects to a wireless access point or base station that supports the same technology. Also required is a call management function and a gateway to the public switched telephone network (PSTN). This ...

  5. Plain old telephone service - Wikipedia

    en.wikipedia.org/wiki/Plain_old_telephone_service

    For instance, in New Zealand, the telephone system remained under Post Office control until the 1980s. POTS was the standard service offering from telephone companies in the United States from 1876 until 1988, [ 2 ] when the Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) was introduced, followed by the development of ...

  6. Sound-powered telephone - Wikipedia

    en.wikipedia.org/wiki/Sound-powered_telephone

    These types of systems allow for two or more parties to be able to talk to one another in areas that experience loss of power or when radio communication is hampered by RF signal losses and/or limitations. Ski lifts use sound-powered phones extensively. Because there are only two handsets (rarely three, where there is a mid station), sound ...

  7. Landline - Wikipedia

    en.wikipedia.org/wiki/Landline

    Landline service is typically provided through the outside plant of a telephone company's central office, or wire center. The outside plant comprises tiers of cabling between distribution points in the exchange area, so that a single pair of copper wire, or an optical fiber, reaches each subscriber location, such as a home or office, at the network interface.

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