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Voice over Internet Protocol (VoIP, Voice over IP) is a general term for a family of methodologies, communication protocols, and transmission technologies for delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms frequently encountered and synonymous with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone. Internet telephony refers to communications services — voice, facsimile, and/or voice-messaging applications — that are transported via the Internet, rather than the public switched telephone network (PSTN). The basic steps involved in originating an Internet telephone call are conversion of the analog voice signal to digital format and compression/translation of the signal into Internet protocol (IP) packets for transmission over the Internet; the process is reversed at the receiving end.[1] VoIP systems employ session control protocols to control the set-up and tear-down of calls as well as audio codecs which encode speech allowing transmission over an IP network as digital audio via an audio stream. Codec use is varied between different implementations of VoIP (and often a range of codecs are used); some implementations rely on narrowband and compressed speech, while others support high fidelity stereo codecs.

Microsoft is launching new capabilities in its Lync communication platform that ties Lync and Skype together to enable audio call and Instant Messaging interoperability as well as shared presence. In addition, new hardware/software packages made with partners simplify the setup of room-based conferencing systems, Microsoft announced today at its Lync Conference 2013, the first such conference.

For now the Lync-Skype interoperability is just for audio calls, but Microsoft says that will be expanded to include video within a year so that a mobile phone with Skype can place a video call via Lync.

Microsoft is introducing a Lync room system that makes it faster and simpler to set up a conference/collaboration session in a dedicated conference room.

Global Crossing Limited is a telecommunications company that provides computer networking services worldwide. It maintains a large backbone and offers transit and peering links, VPN, leased lines, audio and video conferencing, long distance telephone, managed services, dialup, colocation and VoIP, to customers ranging from individuals to large enterprises and to other carriers. The main emphases are on higher margin layered services like managed services and VoIP with leased lines. Global Crossing is a tier 1 carrier.

Global Crossing was founded by Gary Winnick and three business associates in 1997 through Pacific Capital Group, Winnick's personal venture group, which had experienced mixed results in its twelve-year history. In 1997, Global Crossing raised $35 million of capital from the CIBC Argosy Merchant Funds (later Trimaran Capital Partners). The heads of the CIBC Argosy Merchant funds were former associates of Winnick from his days in the 1980s as a salesman at Drexel Burnham Lambert under Michael Milken. CIBC would ultimately realize a gain estimated to be $2 billion from its relatively small equity investment in Global Crossing, making it one of the most profitable investments by a financial institution in the 1990s.[

Wi-Fi (pronounced /ˈwaɪfaɪ/) is a trademark of the Wi-Fi Alliance that manufacturers may use to brand certified products that belong to a class of wireless local area network (WLAN) devices based on the IEEE 802.11 standards. 802.11 the most widely used WLAN technology.

The term Wi-Fi suggests Wireless Fidelity,