The iptel.org 180+ page SIP tutorial is outstanding. Another overview that is a bit more market-oriented and nearly as long. White paper on the SIP value proposition over telephony, SIP and the new ...

Voice-over-IP (VoIP) networking comprises many components and network managers might find themselves treading on new and fragile ground as they investigate VoIP projects. This white paper provides an ...

Avaya has launched phones and software that it claims will make it easier to intelligently route calls in businesses and call centres. On Monday, the communications firm announced the release of ...

Cisco Systems Inc.’s update to its CallManager IP PBX — introduced this week with native Session Initiation Protocol (SIP) support — will require broader ...

A network that uses the IP protocol, which is part of the TCP/IP protocol suite. IP has become the global standard for networking, which includes the entire Internet, many of the data and voice ...

Mitel has announced Release 5 of its 3300 Integrated Communications Platform IP PBX, advancing on a published roadmap aimed at higher scale, increased SIP (Session Initiation Protocol) compliance, ...

The two-way transmission of voice over a packet-switched IP network, which is part of the TCP/IP protocol suite. The terms "IP telephony" and "voice over IP" (VoIP) are synonymous. However, the term ...