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Who is credited for inventing the first telephone exchange ?

Alexander Graham Bell
Antonio Meucci
Thomas Edison
Tivadar Puskas

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Tivadar Puskás was working for Thomas Edison when he build the first telephone exchange in 1877. The very first experimental telephone exchange was built by the Bell Telephone Company in Boston in 1877 and the very first commercial telephone exchange opened in Friedrichsberg close to Berlin on November 12 1877.

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The Digital signal 1 is also known as

D1
S1
T1
M1

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It is a T-carrier signaling scheme devised by Bell Labs.

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What is the full form of "GPRS"?

General Packet Radio Service
Global Packet Root Service
Global Pin Radio Service
General Pin Radio Service

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It is a mobile data service available to users of the 2G cellular communication systems as well as in the 3G systems.

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What is the full form of "EDGE"?

Enhanced Data Rates for Global Evolution
Enhanced Data Rates for GSM Evolution
Enhanced Demodulated Rates for Global Evolution
Enhanced Demodulates Rates for GSM Evolution

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EDGE was deployed on GSM networks beginning in 2003. It was initially used by Cingular (now AT&T) in the United States.

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What is the full form of "SIM" in cell phones?

Single Identity Module
Subscriber Identity Machine
Single Identity Machine
Subscriber Identity Module

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The SIM is a detachable smart card containing the user's subscription information and phone book.

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Which company launched the first mobile phone ?

Motorola
Nokia
Apple
At&T

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The credit of first hand-held mobile phone commercially available goes to DynaTAC of Motorola.

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In which year the first mobile phone was launched ?

1971
1983
1975
1977

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The first hand held phone was launched by Motorola in 1983. It was DynaTAC 8000x model. Its prototype was demonstrated in 1973.

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Which company is considered as the first company to launch first smartphone ?

IBM_SImon.png
RIM
Nokia
IBM
Microsoft

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IBM Simon is the first smartphone. It provided the way for the ones of today by introducing touch screens to phones. This Simon phone was the first PDA - [Personal Digital Assistant] device which utilizes the cellular technology. Simon was introduced in 1994 by BellSouth Cellular company and was designed and built by IBM company. At a cost of just $900, the Simon PDA was a combination cellular phone/PDA that included an x86-compatible CPU , a PCMCIA Type II PC Card slot, 11 built-in programs,a fax modem and a 4 1/2- by 1 1/2-inch touch sensitive LCD screen. The dimensions of Simon measures 8 x 2.5 x1.5 inches and has been described as a hip G.I. Joe Walkie Talkie. In terms of quantity, Only about 2000 Simons were made, the majority being returned to BellSouth and destroyed.

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In which year , the first person to person SMS from phone to phone was sent ?

1990
1991
1993
1994

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It was sent in Finland in 1993.

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The collection of application developed by third parties for Nokia are distributed from a centralized location. What is that ?

Ovi Store
Ovi World
Ovi Location
Ovi Shop

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