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 ?
Aastra Telecom has entered the IP-PBX game with the AastraLink Pro 160.
Telrex states that it is the first call recording vendor to offer premise-based call recording for hosted IP-PBX platforms.
SIP server and IP-PBX shipments represent the next generation of enterprise voice systems and completely replace traditional PBX systems.
Most SMBs are confused about the multiplicity of VoIP solutions available - including premise-based IP-PBX, managed IP-PBX, hosted VoIP, broadband VoIP, and peer-to-peer VoIP.
PBXtra is based on the open source IP-PBX platform Asterisk[R], hardened for reliability and layered with feature-rich applications.
Vertical combines voice and data technologies with business process understanding to deliver integrated IP-PBX and application solutions that enhance customer service and business productivity.
The company's new SIP-based IP-PBX (SMCPBX10), desktop phones (SMCDSP-200/205) and the ultra-portable 802.
OB)("Vertical"), a leading provider of next-generation, IP-based phone systems and voice applications that help businesses better serve their customers, announced today that the aviation industry's foremost supply chain management provider and a non-profit are deploying Vertical's award-winning TeleVantage[R] IP-PBX and Contact Center.
Provides New PBXtra IP-PBX Offerings, Enhanced Readiness Training and Increased Profitability
5 million calls per week across its award-winning IP-PBX platform.
Italian enterprises' investment in IP-PBX solutions