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.