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KX-TDG863W Cordless Phone. With two-way recording, bilingual talking caller ID, hearing aid compatibility, automated call blocking, and intercom support, this model delivers an impressive array of ...
Cordless phones became widely used in home and workplaces during the early 1980s. According to The New York Times, the number of cordless phones sold in the United States grew from 50,000 in 1980 to 1 million in 1982. They quickly became popular because of their convenience and portability, despite fears that their reliance on radio signals ...
In addition, Advanced American Telephones manufactured phones serve as a portrayal of AT&T's home phone service and are seen in ads for it. Phones made today by Advanced American Telephones primarily include cordless telephones and some corded phones, such as Trimline, and some multi-line desk phones. Advanced American Telephones also holds the ...
1980: W.C. Black and David A. Hodges develop the silicon-gate CMOS (complementary MOS) pulse-code modulation (PCM) codec-filter chip, [44] which has since been the industry standard for digital telephony, [44] [46] widely used in the public switched telephone network (PSTN) as well as cordless telephones and cell phones. [46]
George H. Sweigert (1920–1999) is credited as the first inventor to patent the cordless telephone. [1]Born in Akron, Ohio, Sweigert served five years in the US Army as a radio operator in World War II in Guadalcanal, Bougainville, Fiji and New Georgia assigned to the 145th Headquarters Company under the 37th Infantry Division (United States).
Wireless telephone may refer to: Cordless telephone , a telephone in which the handset is portable and communicates with the body of the phone by radio, instead of being attached by a cord Mobile phone , a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area
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