Steps and principles involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding.
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Steps and principles involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding.
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VoIP provides a framework for consolidation of all modern communications technologies using a single unified communications system.
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VoIP phone is necessary to connect to a VoIP service provider.
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For example, in the United States, the Social Security Administration is converting its field offices of 63,000 workers from traditional phone installations to a VoIP infrastructure carried over its existing data network.
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VoIP allows both voice and data communications to be run over a single network, which can significantly reduce infrastructure costs.
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VoIP devices have simple, intuitive user interfaces, so users can often make simple system configuration changes.
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VoIP solutions aimed at businesses have evolved into unified communications services that treat all communications—phone calls, faxes, voice mail, e-mail, web conferences, and more—as discrete units that can all be delivered via any means and to any handset, including cellphones.
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However, the responsibility for ensuring that the VoIP system remains performant and resilient is predominantly vested in the end-user organization.
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Standards for securing VoIP are available in the Secure Real-time Transport Protocol and the ZRTP protocol for analog telephony adapters, as well as for some softphones.
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Public Secure VoIP is available with free GNU software and in many popular commercial VoIP programs via libraries, such as ZRTP.
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VoIP has drastically reduced the cost of communication by sharing network infrastructure between data and voice.
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VoIP technology has increased Federal security concerns because VoIP and similar technologies have made it more difficult for the government to determine where a target is physically located when communications are being intercepted, and that creates a whole set of new legal challenges.
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