Voice over IP

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Voice over IP

(communications)
(VoIP) Any technology providing voice telephony services over IP, including CODECs, streaming protocols and session control. The major advantage of VoIP is lower cost, by avoiding dedicated voice circuits.

Currently VoIP is being deployed on internal corporate networks, and, via the Internet, for low cost (and low quality) international calls. It is also used for telephony applications such as voice and fax mail.

The ITU standard is H.323, which is a whole suite of protocols, while the IETF has developed the much simpler SIP to solve the session control problem and MGCP/Megaco to solve the gateway problem.
References in periodicals archive ?
Tested at NENA's second Industry Collaboration Event for next generation emergency calling (NG9-1-1), Andrew's GeoLENs LIS can provide a location for callers using Internet-based telephony on cable or DSL networks.
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offers voice and video Internet-based telephony services for business and residential customers.
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Nasdaq: CALL), a leading provider of Internet-based telephony applications and services that integrate mobile phones and computing, announced today that Jeff Cavins, Chief Executive Officer of CallWave, will present at the B.
In October 2007, RingCentral introduced DigitalLine, a proprietary VoIP service that adds the convenience and cost savings of Internet-based telephony to its virtual phone system.
In 2007, RingCentral introduced DigitalLine, a proprietary Voice over Internet Protocol (VoIP) service that adds the convenience and cost savings of Internet-based telephony to its virtual phone system.
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