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  2. Mobile telephony - Wikipedia

    en.wikipedia.org/wiki/Mobile_telephony

    Mobile telephony is the provision of wireless telephone services to mobile phones, distinguishing it from fixed-location telephony provided via landline phones. Traditionally, telephony specifically refers to voice communication , though the distinction has become less clear with the integration of additional features such as text messaging and ...

  3. Mobile phone - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone

    Two decades of evolution of mobile phones, from a 1992 Motorola DynaTAC 8000X to the 2014 iPhone 6 Plus. A mobile phone, or cell phone, [a] is a portable telephone that allows users to make and receive calls over a radio frequency link while moving within a designated telephone service area, unlike fixed-location phones (landline phones).

  4. Mobile Telephone Service - Wikipedia

    en.wikipedia.org/wiki/Mobile_Telephone_Service

    On October 2, 1946, Motorola communications equipment carried the first calls on Illinois Bell Telephone Company's new car radiotelephone service in Chicago. [2] [3] Due to the small number of radio frequencies available, the service quickly reached capacity. MTS was replaced by Improved Mobile Telephone Service (IMTS), introduced in 1964.

  5. History of mobile phones - Wikipedia

    en.wikipedia.org/wiki/History_of_mobile_phones

    Because only three radio channels were available, only three customers in any given city could make mobile telephone calls at one time. [16] Mobile Telephone Service was expensive, costing US$15 per month, plus $0.30–0.40 per local call, equivalent to (in 2012 US dollars) about $176 per month and $3.50–4.75 per call. [15]

  6. Mobile radio telephone - Wikipedia

    en.wikipedia.org/wiki/Mobile_radio_telephone

    Mobile radio telephone systems were mobile telephony systems that preceded modern cellular network technology. Since they were the predecessors of the first generation of cellular telephones, these systems are sometimes retroactively referred to as pre-cellular (or sometimes zero generation , that is, 0G ) systems.

  7. Episode 2 - Wikipedia

    en.wikipedia.org/wiki/Episode_2

    Episode 2, Episode II or Episode Two may refer to: Television episodes "Episode 2" (Ashes to Ashes series 1), 2008 ... Mobile view ...

  8. 1G - Wikipedia

    en.wikipedia.org/wiki/1G

    The antecedent to 1G technology is the mobile radio telephone (i.e. "0G"), where portable phones would connect to a centralised operator. 1G refers to the very first generation of cellular networks. [2] Cellular technology employ a network of cells throughout a geographical area using low-power radio transmitters. [1]

  9. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    second-generation mobile telephone 2.5G: Enhanced 2G mobile telephone 3G: third-generation mobile telephone 4ESS Number 4 Electronic Switching System (Alcatel-Lucent) 4WTS: Four-wire termination set: US 5ESS Number 5 Electronic Switching System (Alcatel-Lucent) ACD: Automatic Call Distribution/Director ACTS: Advanced Coin Telephone Service: US ADSL