Abstract:
The modern land line telephone is the result of work of
many people Alexander Graham Bell was, however, the
first to patent the telephone, as an "apparatus for
transmitting vocal or other sounds telegraphically".
However, in Germany Johann Philipp Reis as well as
the Italian-American inventor and businessman Antonio
Meucci has been recognized for his contributory work
on the telephone. Now landline phones are the invention
of the past and man has moved into the era of cell phones.
The history of cell/mobile phones can be traced back to
two-way radios permanently installed in vehicles such
as taxicabs, police cruisers, railroad trains etc. in the
western world. In December 1947, Bell Labs engineers
Douglas H Ring and W Rae Young proposed hexagonal
cell transmissions for mobile phones.