Voice over Internet Protocol (Voice over IP, VoIP) is one of a family of internet technologies, 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 often used synonymously with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone. This book is your ultimate resource for VoIP. Here you will find the most up-to-date information, analysis, background and everything you need to know. In easy to read chapters, with extensive references and links to get you to know all there is to know about VoIP right away, covering: Voice over IP, 1legcall, Voice Funnel, Arbinet, Call-recording software, Generic Access Network, International gateway, Internet telephony service provider, Iobi, VoIP phone, IP-DECT, Media phone, Mobile VoIP, MoIP, One Source Networks, Peer-to-peer SIP, Purple minutes, SIP connection, SIP provider, Telephone VoIP Adapter, UMA Today, VoATM, Voice engine, Voice over WLAN, VoIP recording, VoIP VPN, Web-based VoIP, 8x8, Aastra Technologies, Aculab, Apex Internet, Apptix, AT&T CallVantage, AudioCodes, AVST, BabyTEL, Bandwidth.com, BlueFace, Bond Wireless, Brekeke PBX, Brekeke SIP Server, BroadVoice, Broadvox Communications, Callware, Clearwire, Com Hem, Comcast, Covad, Damovo, Deltathree, Dialogic Corporation, Dreamtilt, EarthLink, Eicon, Engin Limited, Eventis, FaktorTel, Fastweb (telecommunications company), Fibernetics Corporation, Free World Dialup, Freephoneline.ca, Freshtel, Gizmo5, GlobalRoam, Grasshopper (company), HipVoice, IConnectHere, Inphonex, Internode (ISP), IPdrum, Ipkall, Iristel, Jajah, Jaxtr, Lingo (VoIP Service operator), Mind CTI, Mitel, MKC Networks, Mobivox, Morodo, NEC Unified Solutions, NetTALK, NextGenTel, Nokia Siemens Networks, Nortel, Nuvio Corporation, Ooma, Orbitel, OVETEL, PhoneGnome, Primus Canada, Primus Telecom, Primus Telecommunications (Australia), Radvision, Rebtel, Rigatta, RingCentral, SIP Broker, Sipgate, Sipservice, Skype, Skype Limited, Snapvine, Snom, Speakeasy (ISP), Spikko, SPIRIT DSP, SunRocket, Super Technologies, T-Home Macedonia, TalkFree, Inc, TalkSwitch, Tdsoft, Telesphere, Telio, Time Warner Cable, TouchWave, Tpad, Troy Cablevision, UTStarcom, Veraz Networks, Vivox, Vocalocity, VocalTec, VoicePulse, Speedflow Communications, Voipfone, Vonage, Voxofon, Vyke, White Label Communications Ltd, ZON Multimdia, Zoom Telephonics, Zultys, Analog telephone adapter, Avaya Communication Server 2100, Avaya Communication Servers, Avaya IP Phone 1120, Avaya IP Phone 1140E, BT Fusion, Chatter bug, GXP 2000, LG-Nortel IP Phone 8540, Linksys iPhone, Linksys PAP2, MagicJack, SPA2102, SPA3102, Tk6000, Convergence Technologies Professional, SIP Forum, SIPfoundry, Voice over IP Security Alliance, Voice over the Net, Authenticated Identity Body, Call Admission Control, Distributed Universal Number Discovery, H.248, H.323, Hookflash, Inter-Asterisk eXchange, IpTTY, Jingle (protocol), List of SIP request methods, List of SIP response codes, Media Gateway Control Protocol, Media Gateway Control Protocol (Megaco), Media Gateway Control Protocol (MGCP), Message Session Relay Protocol, MiNET, Network Voice Protocol, Network-based Call Signaling, Open Phone Abstraction Library, Open Settlement Protocol, Real-time Transport Protocol, Registration, Admission and Status, RTP audio video profile, Session Initiation Protocol, Signaling Compression, Simple Gateway Control Protocol, SIP Trunking, Skinny Call Control Protocol, Skype protocol, T.37 ITU-T recommendation, T.38 ITU-T recommendation, UNIStim...and much moreThis book explains in-depth the real drivers and workings of VoIP. It reduces the risk of your technology, time and resources investment decisions by enabling you to compare your understanding of VoIP with the objectivity of experienced professionals.