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1. Presentation On Cellular Phone V/S Cordless Phone
By
Akash Kumar
(PGDM II TRIMESTER)
GUIDED BY : PROF. INDRYANI KATTI

3. CORDLESS PHONE

4. HISTORY
• A jazz musician named Teri Pall invented a
version of the cordless phone in 1965 .
• She sold her rights to the cordless phone in
1968 to a manufacturer who modified it for
practical use.
• George Sweigert, an amateur radio operator
and inventor from Cleveland, Ohio, is largely
recognized as the father of the cordless
phone.

5. • He submitted a patent application in 1966 for
a "full duplex wireless communications
appartus".
• The U.S. Patent and Trademark Office awarded
him a patent in June 1969
• Filed 03/11/1974, Douglas G. Talley and L
Duane Gregory applied for and were granted (
08/02/1977) US Patent 4039760 for a duplex
voice communication.

6. Cellular phone

7. EVOLUTION…..

8. HISTORY
• The world's first commercial automated
cellular network was launched in Japan by
NTT in 1979, initially in the metropolitan area
of Tokyo.
• The first 1G network launched in the USA was
Chicago-based Ameritech in 1983
• In 1991, the second generation (2G) cellular
technology was launched in Finland by
Radiolinja on the GSM standard.

9. • Ten years later, in 2001, the third generation
(3G) was launched in Japan by NTT DoCoMo.

10. CORDLESS V/S CELLULAR
• Portability
• Interference
• Health Concerns
• Multi-purpose
• Cordless-cell Combos
• Market Share
• Adverse Affect
• Health
• Performance
• Security