VOIP Hardware- Tech and Technology |
| VOIP - Voice over IP |
| Protocols |
| Most standards-based solutions use either the H.323 or Session Initiation Protocol (SIP) protocols. A number of proprietary designs also exist. |
| Signaling protocols: - |
| Session Initiation Protocol (SIP) Several different speech codecs can be used for stream audio compression . Commonly used codecs for VoIP traffic include G.711 , G.723.1 and G.729 , all ITU-T -specified. - |
| - Networks: Full Phone Service |
| AOL TotalTalk : A U.S. and Canadian VoIP phone service provider. |
| Bandwidth.com : A U.S.-based Business VoIP carrier. |
| BroadVoice : A U.S.-based VoIP network. |
| Cliconnect Internet Telephony : A Canadian-Brazilian based Voip Service Provider. |
| Congruent IP Communications : A Canadian-based hosted VoIP services provider. |
| Internode NodePhone : An Australian-based VoIP service provider. |
| IXP Voice : A U.S.-based VoIP phone service provider. |
| Lingo : U.S. VoIP offering of Primus Telecommunications. |
| OpenWengo : A France-based VoIP Provider. |
| MetroTel : A U.S.-based VoIP Provider. |
| MyWebCalls : A UK-based VoIP phone service. |
| Packet8 : A U.S.-based VoIP network. |
| sipgate : German SIP based provider also operating in Austria and the UK |
| SIPphone : A SIP-based VoIP network. |
| SunRocket : A U.S.-based VoIP phone service provider. |
| TheGlobe : A U.S.-based Voice over Internet Protocol communications company. |
| TeleCable Services : A U.S.-based VoIP phone service provider. |
| Telio : A Norwegian-based VoIP phone service provider |
| TexVoIP : Italian VoIP phone service provider |
| VoicePulse : A U.S.-based VoIP phone service provider |
| Vonage : A U.S.-based VoIP phone service provider |
| Verizon VoiceWing : Verizon's version of VoIP |
| VoIP User : A UK based free SIP based network with a community funded PSTN gateway |
| Voxbone : A EU based provider of worldwide VoIP virtual numbers |
| Networks: Software Service |
| Camfrog : Camfrog Video Chat uses a proprietary system with instant messaging to do multi-user audio and video. |
| FWD (formerly Free World Dialup) : A free SIP-based VoIP network. |
| Gizmo_Project : Gizmo Project uses your internet connection (broadband or dial-up) to make calls to other computers, phones and mobiles. |
| Paltalk : A proprietary freeware VoIP system which uses a messenger-like client for video, voice and text chat. Also offers interoperable #REDIRECT Instant Messenger (IM) with #REDIRECT AOL/AIM , #REDIRECT Yahoo Messenger , #REDIRECT MSN Messenger and #REDIRECT ICQ using the Paltalk client. |
| PeerMe : A proprietary freeware VoIP system which uses a messenger-like client. |
| Skype : A proprietary freeware VoIP system which uses a messenger-like client. |
| SIP Broker : One of the biggest free VoIP peering and ENUM services. |
| Teleo : A VoIP network using a P2P model |
| TelSIP : A European-based VoIP using SIP. |
| TheGlobe : A proprietary freeware VoIP plugin which adds a messenger-like client to your browser. |
| Vbuzzer : A SIP -based VoIP service with low cost access to conventional PSTN network. |
| Chattercube : The worlds first Peer-to-Peer VoIP network. - |
| Hardware: Wi-Fi Phone |
| UTStarcom F1000 : a wi-fi SIP handset - |
| Software |
| Asterisk PBX : The popular Linux-based open source software PBX switch. It is known to compile and run on GNU/Linux for PPC along with OpenBSD, FreeBSD, and Mac OS X Jaguar. |
| GameComm , Roger Wilco , Teamspeak , and Ventrilo : Voice communication programs popular in online gaming. |
| Gizmo : A freeware VoIP client using SIP with Jabber protocol support. |
| Google Talk : A free VoIP system from Google. |
| Ekiga : The popular Linux-based open source softphone which supports a wide variety of video and audio codecs. Version 1 supported only H.323 , while version 2 supports H.323 and SIP . |
| KCall is an open source Linux softphone using Qt toolkit libraries. |
| MSN Messenger |
| IP Multimedia Subsystem : architectural model (with several SIP extensions), used by the traditional telecommunications industry to develop systems to replace the current circuit switched network with a NGN network. |
| Jajah : A freeware VoIP client with free videotelephony, chat, text messaging, voicemailbox and is compatible to SIP , Skype , Gizmo and IAX /H.323 |
| OpenH323 : An implementation of the H.323 protocol released under the MPL license. It is used as the basis of several other VoIP applications including Ekiga and GnuGK . A new version of OpenH323 called OPAL is available that supports both H.323 and SIP |
| OpenWengo : Voip-application published under GNU GPL license |
| PhoneGaim : A free VoIP system based on Gaim and SIP. |
| PeerMe : A proprietary freeware VoIP system which uses a messenger-like client. |
| ReSIProcate : A robust and feature-rich open source SIP stack. |
| SIP Express Router (SER) : Fast, scalable, free SIP server. |
| SIMPLE : An instant messaging and presence protocol based on SIP. |
| sipX : The popular open source SIP PBX, native SIP call control, many features, Web management, and fully standards-compliant |
| SJphone : SJphone is a popular free SIP/H.323 softphone that many services use. |
| Skype : Skype is a free VoIP client that offers in and outbound PSTN facilities. It is closed source and is based on a closed protocol. |
| *starShop-OSS : Open Source professional and powerful billing and management system based on Asterisk PBX for Calling Shops and Internet cafes. |
| Tivi : A SIP VoIP client softphone . |
| TERAVoice Server - TERAVoice VoIP Gateway |
| Vbuzzer : Vbuzzer Softphone is a proprietary freeware to be used in conjunction with Vbuzzer Internet telephone service. |
| Yahoo! Messenger |
| YATE : A GPL (free) software VoIP telephony engine (VoIP server and client for H.323,IAX,SIP) for Windows and Linux - |
| VoIP Testing |
| TestYourVoIP
VOIP Test Equipment Vendors - |
| Agilent |
| Empirix |
| Shenick Network Systems |
| Spirent - |
| Computer conferencing |
| Differentiated services |
| Integrated services |
| Predictive dialers - |
| FCC VoIP Information from the FCC |
| DMOZ listing of VoIP web sites |
| Sicker, Lookabaugh and Ryan's law-review article discussing various technical and policy issues related to VoIP |
| Multichannel Merchant - |
| Jupiter Research - The Kelsey Group - Google - Forrester Research |