History of Wireless Communication.

Birth of Mobile Telephony.

Apr 15, 1940

Number of mobile users > 50K 1940s-1950s.

Birth of Mobile Telephony.

May 27, 1946

First interconnection of moible users to public switched telephone nextwork (PSTN)

Birth of Moible Telephony.

Oct 2, 1949

FCC recognizes mobile radio as new class of service

Birth of Mobile Telephony.

Nov 10, 1950

Number of mobile users > 500K 1950s-1960s

Birth of Mobile Telephony.

Jul 15, 1960

Number of mobile userd > 1.4M 1960s-1970s

Birth of Mobile Telephony.

Jul 15, 1960

Improved Mobile Telephone Services (IMTS) introduced; supports full-duplex, auto dial, auto truncking.

Birth of Mobile Telephony.

Aug 22, 1976

Bell Mobile Phone has 543 pay customers using channels in the New York City are; waiting list is 3700 people; service is porr due to blocking.

Cellular Mobile Telephony.

Mar 20, 1979

NTT/Japan dedeploys first cellular communication system.

Cellular Mobile Telephony.

Sep 24, 1983

Advanced Mobile Phone System (AMPS) deployed in US in 900 MHz band: supports 666 duplex channels.

Cellular Mobile Telephony.

Dec 16, 1989

Groupe Special Mobile defines Eurpoean digital cellular standard, GSM.