mobile telephone
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Cellular Telephone , The cellular phone is the latest in a long line of mobile, portable, and wireless technologies extending back to the 1930s. Military forces were amon… Dial Tone Decoder , Telephone conversations are sometimes surreptitiously taped using microphones or other bugging devices. These devices run the risk of being detected.… Telephone Tap Detector , Telephone Tap Detector
A telephone tap detector aids communication security by providing electronic recognition of attempts to intercept a call throu… Gte Corp , One Stamford Forum
Stamford, Connecticut 06904
U.S.A.
(203) 965-2000
Fax: (203) 965-2277
Public Company
Incorporated: 1920 as Commonwealth Telephone… Telephones , The telephone is a device for conducting spoken conversations across any distance beyond the range of the unaided human ear or the unamplified human… British Telecommunications Plc , British Telecommunications plc
BT Centre
81 Newgate Street
London EC1A 7AJ
United Kingdom
(071) 356 5000
Fax: (071) 356 5520
British Telecommunicatio…
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mobile telephone