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Avaya - acquired Nortel. Buffalo Technology. Brocade Communications Systems - acquired Foundry Networks - was acquired by Ruckus Networks, An ARRIS company and Extreme Networks. Ciena. Cisco Systems. Control4 - acquired by SnapAV. Dell Networking. DrayTek. D-Link.
GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM . Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
Near-field communication ( NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 centimetres (1.6 in) or less. [1] NFC offers a low-speed connection through a simple setup that can be used for the bootstrapping of capable wireless connections. [2]
Wireless Application Protocol ( WAP) is a now obsolete technical standard for accessing information over a mobile cellular network. Introduced in 1999, [ 1] WAP allowed at launch users with compatible mobile devices to browse content such as news, weather and sports scores provided by mobile network operators, specially designed for the limited ...
3G is the third generation of wireless mobile telecommunications technology. It is the upgrade to 2G, 2.5G, GPRS and 2.75G Enhanced Data Rates for GSM Evolution networks, offering faster data transfer, and better voice quality. [1] This network was superseded by 4G, and later by 5G. This network is based on a set of standards used for mobile ...
AT&T, T-Mobile, Verizon, Boost Mobile, and uscellular also sell SIM cards through their retail channels, both in-store and online. The top five wireless providers operate nationwide wireless networks which cover most of the population in the United States, while smaller carriers provide native network coverage across selected regions of the ...
Comparison of mobile phone standards; List of sovereign states by number of broadband Internet subscriptions; List of countries by number of Internet users; List of countries by number of telephone lines in use; List of countries by smartphone penetration; List of multiple-system operators; List of telephone operating companies
NFC World. 30 January 2013. Retrieved 31 January 2013. ^ "Blackberry Z10". Blackberry. Archived from the original on 3 February 2013. Retrieved 31 January 2013. ^ Casio G'zOne Commando 4G LTE, Verizon Wireless, retrieved 5 July 2013. ^ With the exception of the Japanese version which uses full IRDA.