Telecommunications

A long history:

• Siemens just celebrated its 125th anniversay as a telecommunications company!
• A. G. Bell thought that the telephone would be used to listen to concerts at a distance.
• (fixed) voice telephony has changed very little in the last 30 (70) years.
• Nomadic communications has existed since at least 1910, when Hilda Ericsson presuaded Lars Magnus Ericsson to buy a car and they made calls via the overhead telephone wire!

[Figure removed]

Figure 1: Part of a figure by Anders Suneson, from pg. 43 of "The Mobile Phone Book",
by John Meurling and Richard Jeans, Communications Week International, 1994, ISBN 0 9524031 0 2