B0031

history of the phone through 1970-1982

By mjanelle

  • first telephone in 1970-1999

    first telephone in 1970-1999
    ESS-2 electronic switch.

  • telephone in 1971

    telephone in 1971
    AT&T submitted a proposal for cellular phone service to the U.S. Federal Communications Commission (FCC).

  • telephone in 1973

    telephone in 1973
    Motorola employee Martin Cooper placed the first hand-held cell phone call to Joel Engel, head of research at AT&T's Bell Labs, while talking on the first Motorola DynaTAC prototype.

  • telephone in 1978

    telephone in 1978
    : Bell Labs launched a trial of the first commercial cellular network in Chicago using Advanced Mobile Phone System (AMPS).

  • telephone in 1979

    telephone in 1979
    NVP running on top of early versions of IP

  • telephonr in 1981

    telephonr in 1981
    The world's first fully automatic mobile phone system NMT is started in Sweden and Norway.

  • telephone in 1982

    telephone in 1982
    FCC approved AT&T proposal for AMPS and allocated frequencies in the 824-894 MHz band.