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 ?
Social networking trends have spurred new opportunities for the makers of VoIP call center platforms, says Heavy Reading IP Services Insider
com)-- The new data center is part of an initiative to further align DOW Networks with the growing need for cloud-based call center services and traffic over international toll free numbers as required by the next generation VoIP call center.
New VoIP call options are available via Nimbuzz's global affiliate SIP partners: Gizmo5, Vyke, SIPgate, and 15 other global players.
lt;p>Technicians can use their MetroScope analyzer VoIP phone to make a VoIP test call, call other technicians or call center mangers, produce a long-duration call (up to 24 hours) to test quality over an extended period of time, or generate VoIP call traffic to simulate multiple calls on the network at one time, all while getting a real-time visual report of the network's performance on the handheld analyzer's screen.
The on-demand, "software-as-a-service" format for application delivery is becoming more popular all the time, especially in the VoIP call center market.
Peer-to-peer applications for downloading of videos and audio files can consume large amounts of bandwidth, negatively impacting VoIP call quality.
Determine network upgrade requirements by demonstrating how the upgrades will improve VoIP call quality, jitter, one-way delay and packet loss.
Among the VoIP call company's most popular add-ons is the Global Cell service, which allows users to place and receive international calls.
VoIP-specific controls should be applied to assure real-time VoIP call performance (e.
a provider of embedded, VoIP call quality monitoring agents and the emerging field of non-intrusive VoIP quality of experience (QoE) analysis, and Trinity Convergence, a provider of packet voice and fax solutions for the converged telecommunications marker, have reported they have entered into a strategic alliance aimed at simplifying and enhancing the implementation of call quality monitoring and management agents in VoIP end systems.
0 Release, Tone's enterprise and managed service provider (MSP) customers can proactively manage both VoIP call quality and the underlying converged network infrastructure in a holistic manner, providing their VoIP, network and IT support teams with the answers and capabilities needed to effectively assure VoIP call quality and service levels that consistently support and drive the business.
Installed as a server in an organization's DMZ beside Web, e-mail and other servers, the product seamlessly translates VoIP call streams between the internal private IP address space and the external global address space, enabling calls to pass into and out of the organization across the NAT boundary.