Innovation glossary

07/30/2014 - 03:46 PM

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2G (second-generation Mobile System)
Second-generation protocols using digital encoding and including GSM, D-AMPS (TDMA) and CDMA. 2G networks are in current use all over and other parts of the world. These protocols support high bit rate voice and limited data communications. 2G networks technology offer auxiliary services such as data, fax and SMS. Most 2G protocols offer different levels of encryption.

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3G (third-generation Mobile System)
Third-generation wireless service, designed to provide high data speeds, always-on data access, and greater voice capacity. 3G networks technology provide to transfer both voice data services (telephony, messaging) and non-voice data (such as downloading Internet information, exchanging email, and instant messaging). The high data speeds, measured in Mbps, are significantly higher than 2G and, 3G networks technology enable full motion video, highspeed internet access and video-conferencing. 3G technology standards include UMTS, based on WCDMA technology (quite often the two terms are used interchangeably) and CDMA2000.

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ADSL (Asymmetric Digital Subscriber Line)
A modem technology which converts existing twisted-pair telephone lines into access paths for multimedia and high-speed data communications. ADSL can transmit up to 6 Mbps to a subscriber, and as much as 832 Kbps or more in both directions. Such rates expand existing access capacity by a factor of 50 or more without new cabling.  

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