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 ?
An Ofcom survey reportedly found that 78% of those using net phone services which are unable to connect to emergency services, thought it was already possible to make an emergency call on the network.
Softbank has been studying the feasibility of starting a fiber-optic Internet phone service amid the growing difficulty in winning over fresh subscribers to its ADSL-based Net phone service due to the rapid spread of fiber-optic lines.
It features Wi-Fi internet connection, voice-activated windows, doors and lights, sat-nav, DVD player and net phone.
The provider of free net phone calls (via VoIP - Voice over Internet Protocol) have revealed they are testing an SMS text message service allowing Skype users (Skypers?) to send free texts to any mobile phone user in the world.
On July 2, the IRS published a public notice in the Federal Register announcing plans to expand the telephone tax "to reflect changes in technology." "Although the notice does not mention Net phone services, industry advocates warned it could lead to new taxes on fast-growing voice-over-Internet Protocol (VoIP) technology, depending on how it's interpreted," observed Declan McCullagh of CNET News.com.
In addition, you can also multitask while using 'Net phone.
Software makers and telephony supporters feel ACTA's concerns are a little premature, since the current number of Net phone users worldwide is under 30,000.
List Match also works with other Pro CD titles such as Net Phone and Canada Phone.
At present, the Softbank group is offering the cut-rate ''BB Phone'' Net-based phone service, while IP Talk, an ally of Mitsubishi Electric Corp., began offering June 14 a Net phone service.
of Danvers, Massachusetts to bundle Pro CD's Net Phone software with Logicraft's CDworks family of CD-ROM networking systems.