Chapters: Voice Over Internet Protocol, Generic Access Network, Ip Phone, Peer-To-Peer Sip, Mobile Voip, Call Recording Software, Voip Recording, Voice Over Wlan, Arbinet, Sip Connection, Media Phone, Voip Vpn, Uma Today, Sip Providers, Iobi, Moip, Voice Engine, Internet Telephony Service Provider, Ip-Dect, Web-Based Voip, International Gateway, Voice Funnel, Purple Minutes. Source: Wikipedia. Pages: 97. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher’s book club where you can select from more than a million books without charge. Excerpt: Voice over Internet Protocol (VoIP) is a general term for a family of transmission technologies for delivery of voice communications over IP networks such as the Internet or other packet-switched networks. 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. 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. Voice-over-IP has been implemented in various ways using both propriet…More: http://booksllc.net/?id=75028
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