Welcome to the VOIP Wiki - a reference guide to all things VOIP.

This Wiki covers everything related to VOIP, software, hardware, VoIP service providers, reviews, configurations, standards, tips and tricks and everything else related to voice over IP networks, IP telephony and Internet Telephony.

Your contributions are welcome, please read the How to add information to this wiki page and the Posting Guidelines before you post.


News Resources

Getting Started

Connecting Phones to VOIP - VoIP to PSTN, PSTN to VoIP

Connecting VOIP Networks to the PSTN and Cellular Networks

VoIP PBX and Servers

Popular choices - please do not alter this list, add new entries here
  • 3CX - Software based VoIP IP PBX for Windows
  • Asterisk: Open Source PBX & Asterisk Appliances
  • Free VoIP Networks - list of Free VoIP Providers
  • FreeSWITCH: Open source cross platform (*nix, Win, OSX) multiprotocol (SIP, IAX, Googletalk, Jabber, XMPP, WOOMERA/H.323, PRI/T1/E1) softswitch.
  • Kamailio: Flexible and powerful open source GPL SIP ( RFC3261 ) server with integrated TLS (former OpenSer)
  • Sip Express Router: High-performance, configurable, free SIP ( RFC3261 )
  • sipXecs: SIPfoundry's sipXecs Project - The enterprise class SIP PBX for Linux (A-GPL) - Utilizes FreeSwitch, OpenFire and OpenACD
  • Yate - open source softswitch/PBX, with E1/T1, ISDN, SS7, RBS, analogics, IAX, H.323, SIP, MGCP, Jingle (GoogleTalk), for Windows, Linux and BSD's
  • VoIP providers customer reviews, pricing information, comparison tables, and more from VoipReview.org
  • RingCentral UK Ltd. - VoIP system
  • More: VOIP PBX and Servers, VoIP Hardware, Call Center Software, Virtual PBX

Voip Protocols


  • Basic call routing and rules for UA's or VOIP servers CPL
  • IVR Presentation and dialog management: VoiceXML, CallXML
  • Call control / conferencing / call routing: CCXML
  • IVR / Speech recognition definition: SRGS
  • IVR / Speech synthesis definition: SSML
  • IVR / prompting / recording / conferencing / DTMF / Voice: CallXML

Traditional Telephone Network

Related Topics to Business and VoIP

VOIP Events and Conferences

Business Services


Suggestions and Questions

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Created by: system, Last modification: Tue 20 of Mar, 2018 (18:26 UTC) by brightpattern
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