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Vonage (/ ˈ v ɒ n ɪ dʒ /, legal name Vonage Holdings Corp.) is an American publicly held business cloud communications provider.Headquartered in Holmdel Township, New Jersey, the company was founded in 2001 as a provider of residential telecommunications services based on voice over Internet Protocol (VoIP).
Overview. 5G networks are digital cellular networks, for which the service area is divided into small geographical cells.The 5G wireless devices in a cell communicate by radio waves with a local antenna array and low power automated transceiver (transmitter and receiver) in the cell, over frequency channels assigned by the transceiver from a pool of frequencies that are reused in other cells.
Metro by T-Mobile (formerly known as MetroPCS and also known simply as Metro) is an American prepaid wireless service provider and brand owned by T-Mobile US.It previously operated the fifth largest mobile telecommunications network in the United States using code-division multiple access (CDMA).
Logo used in Spain by Clearwire España, S.A. to market 4G wireless Internet services under the Instanet brand Clearwire provides service in Spain in the 3.4–3.6 GHz frequency range. 
Cox Wireless utilized Sprint's voice and 3G networks and also had planned to build out their own 4G LTE network.  On May 24, 2011, Cox Communications announced it would decommission its plans to build a 3G wireless network, and would instead offer Sprint service to half of its current footprint and operate as a Sprint MVNO by the end of 2011.
It was the founder of the first telephone exchange, as well as the world's first telephone book. Since its inception, SNET has held a monopoly on most of the telephone services in the state of Connecticut; the only remaining exceptions are the Greenwich and Byram exchanges where Verizon New York provides telephone service.