An
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rotary dial ???????
, c.1940s
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??? ????? (????? ?????? ????) ???????????? ?? ??? ?????? ?????? ?? ?????? ????? ????????. ???????????? ??? ?????? ?????? ????????? ???????? ??? ?????????? ????? ?????? ??? ?? ???????? ?? ?? ??? ???? ????? ??? ?????. ????????? ????? ????? ????? ? ?????? ?? ?????? ?????????? ???? ??? ?? ???? ??. ???????? ?????? ??????????? ????? ??????? ?????? ?????? ???? ????????? ???? ??????????? ????????. ??????? ???? ?????? ???????????? ???? ?????? ??? ???? ?????????? ?????? ?? ????????? ????. ??? ???? 1876?? ???????????? ????????????? ?????? ??????? ???? ?????.
????? ?????????
[
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?????? ????? ???? ???? ??????? ???????. ??? ??? ???? ?? ??????. ??? ????? ?????????? ??? ?????? ?????? ??????? ?? ???? ??. ???? ??? ???? ?????? ????? ?????? ?????? ????????? ??????? ?????? ????????? ? ????? ???????? ?????? ??? ????? ????? ???? ?? ???????? ? ????? ??. ????? ????????? ??? ?????? ??????????? ?? ??????????? ??????? ?????. ?????? ???????? ??????????? ??. ?????? ??????? ??????????? ?????? ??? ??? ??? ?????? ???? ?????????? ??????? ????? ? ??? ??. ?????? ?????? ???? ??????? ??? ???. ?????? ???????? ??? DC (??? ?????) ??????? ?? ??? ????????? ???????? ????? ??????? ?? ????? ???? ????? ???? (dial tone) ????. ????????? ??????? ??????? ??? ??? ??? ???? ??? ?? ??? ?????????? ????????. ?????? DTMF ??? ??????. ?????? ???????? ???? ??????? ??????? ??? ??? ??? ?????? ????? ???? ????.
??????? ??????? ??????? ??? ??? (??????? ???) ??? ?????, ????? ?? ????? ?????? ???? ????? ????????? ???? ?????? ??????? ??????? ?? ??. ??????? ??????? ?????? ?????? ??????? ????? ??? ?????? ???????? ??? ??????? ??? ????? ?? ?? ????? ????? ????????? ?????? ??????? ?? ??? ???. ?? ???????? ???????? ???? ??? ?????? ???????? ?????? ??????? ??? ????????? ?????? ??????? ?????. ??????? ?????? ??? ???????? ????? ??? ??? ????? ??????????? ??? ?? ????? ?????? ???? ???????? ??????????? ??? ???? ??. ????????? ??????? ???? ??? ?????? ?????? ????? ??????? ?? ???????? ?? ???? ??????????? ????. ?????? ?????? ??????? ?????????? ??????? ??????? ??? ??? ??? ?????? ??????? ???????? ??? ???? ?? ?? ??????????? ?? ?????? ??. ??????? ?? ????????? ???????? ?? ???? ????????? ??????? ????.
???????? ?? ???? ???????? ??? ??? ?? ??????????????? (????? ???????????? ??? ???????) ?? ?????????? ??????? ??. ??????????? ?????? ??????? ??? ??? ????? ??? ???? ????? ??? ??? ????? ???? ??????? ??????? ????????? ??????? ?????? ????. ??? ????????? ???? ?????? ?????? ?????? ????? ????? ??????? ??? ??????????? ?? ??? ?? ??????? ???? ???? ????????? ????? ???? ???? ????? ??. ????????? ?????? ?????? ???? ??????? ?? ??? ??? ???? ???? ???? ?? ??? ?????? ?????????????? ?? ????? ???? ???? ?????????????? ??. ??? ????????? ??????? ???? ??? ??????? DC ???? ???? ????? ??? ?????? ??????? ?? ?????? ????? ??????? ??? ??? ???? ????.
???? ?????? ??????? ?????? ??? ??????? ????? ???? ???????? ??? ?? ?????????.
