When did the landline telephone and VoIP appear?

Question by : When did the landline telephone and VoIP appear?
Can anyone tell me the time that the first landline telephone and VoIP appeared?

Best answer:

Answer by joe r
1875 telephone invented

1877 first long distance lines installed

1915 first coast to coast long distance call

1947 plan devised for cellular telephones

1951 first transcontenental direct dial long distance call

1973 first cellular telephone call

1979 first commercial cell phone service (in tokyo)

1984 first cell phones commercially available motorola dynatac 8000x

1991 2G cellular GSM technology launched

1995 first commercial internet phone software released

1997 first soft switch

1999 SIP created

1999 3g cellular launched

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