Video profile on IMT-2000 with Yoshio Utsumi,
ITU Secretary-General, from September 1999.
Copyright 1999
Wireless Communications
The first radiotelephone service was introduced
in the United States in the late 1940s. The system
was meant to connect wireless users in vehicles
to the public fixed network.
In the 1960s, a new wireless system was launched
by Bell Systems and it was called Improved Mobile
Telephone Service” (IMTS). IMTS brought many improvements
like direct dialing and higher bandwidth.
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