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

This Wiki covers everything related to VOIP, software, hardware, service providers, reviews, configurations, standards, tips and tricks and everything else related to voice over IP networks, IP telephony and Internet Telephony. However, the Wiki is primarily for information, not for advertising.

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

NEWS

2011-03-31 - Dennis Wu Workshop Interactive CallFlow Builder Lite 0.9.5 has been released. The free graphic based Dial Plan builder
2011-03-31 - Attend the free 5th Annual Atlanta Asterisk Users Group VoIP Conference
2011-03-30 - Caller ID Name with your Google Voice Number
2011-03-30 - Ozeki Autodialer Studio v1.1.0 is released that supports unlimited simultaneous calls on one SIP account
2011-03-25 - IPTEGO’s Palladion adds support for Asterisk now via Cloud networking
2011-03-23 - South African Operator's Voice & SMS 'Enabling Technology' is Squire Technologies' NGN Switch - SVI-MG
2011-03-23 - SIP Communicator becomes Jitsi and adds support for LDAP and Google Contacts
2011-03-22 - OpenVox Selects Octasic's Vocallo MGW for Superior Voice/Video Transcoding
2011-03-22 - YateClient SIPifies Google Voice

News Resources

Software Releases - Check here for recent VoIP-related software releases.
VoIP Services - Check here for news on Voip Services.
VOIP Event Calendar - Check here for news on VOIP Events, Tradeshows, Training and Conferences
Older News - Check out older news articles here

Getting Started

What is VOIP? The very basics.
Free VOIP Publications: Magazines and Newsletters free to qualified subscribers about VOIP related products
Training: Seminars, tutorials, on-line classes. Check here for recent.
VOIP Consultants: Finding help.
VOIP Service Providers - VOIP service providers.
VOIP Server Monitoring - VOIP server monitoring providers.
DID Service Providers - VOIP call origination service providers.
VoIP Practical Guide - VoIP Resources for Your Home and Business
How to start a VOIP Business

Connecting Phones to VOIP

IP Phones: VoIP phones both hardware and software
Analog Telephone Adapters: VoIP analog telephone adapters ATA - see Cheapest ATAs and Service
- See also VOIP Routers
- See also Asterisk hardware home analog: includes some comparison of external ATA and PCI card
Digital Telephone Adapters: VoIP Digital/TDM telephone adapters
Dial Pulse to Touchtone DTMF Converters - connect that old rotary phone to DTMF VOIP equipment
VOIP Paging and Intercom
VOIP Payphones
VOIP and TTY VOIP and hearing impaired TTY terminals
VOIP Paging Equipment - paging with VOIP
Free VoIP Networks - list of Free VoIP Providers
Wireless VOIP: Cut the wires! Roam free with wireless VOIP

Connecting VOIP to the PSTN and Cellular Networks

Cheapest ATAs and Service - For Calling PSTN Numbers, or receiving phone calls from PSTN Numbers
ENUM - Translating E164 numbers to VoIP addresses
Failover Switches - Automated or Manual Switch PSTN Interfaces on failure for redundancy
FXS-FXO Converters - Convert an FXS interface to an FXO interface
PSTN Gateways - VOIP to PSTN gateways (also known as: Media Gateways)
Routing calls using a free international calling service - How to use two-step dialing to save on costs.
VOIP GSM Gateways - VOIP to GSM gateways

VoIP PBX and Servers

Popular choices - please do not alter this list, add new entries here

Asterisk: Open Source PBX
CallWeaver: Vendor independent, cross-platform open source IP-PBX, originally derived from Asterisk.
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 ) server
sipXecs: SIPfoundry's sipXecs Project - The SIP PBX for Linux (L-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
more...

Voip Protocols

IP Protocols COPS, ENUM, H.323, IAX, IMS, LTP, Megaco, MGCP, PINT, RTP, SCCP, SCTP, SDP, SIMPLE, SIP, STUN, T.37, T.38, TRIP, TURN
ITU protocols SS7, ISUP
OSP, PacketCable MRCP
Encryption Protocols ZRTP

Markup

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

Analog Telephone Information
PBX features
PSTN Interface Hardware
RESPORG: Toll Free 800 Number Programming
Telecom Dictionary
Telco Engineering Information
Telephone History

VOIP Events and Conferences

Astricon
AstriEurop The Asterisk European Exhibition
Asterisk-Tag.org Annual German conference on Asterisk and related topics
ClueCon Annual conference on open source telephony development
Global VoIP and Telephony-related events
Training and Conferences - Check here for recent Training and Conferences
VoiceCon Annual conference on IP Voice Communication.
VOIP Event Calendar — List of upcoming VOIP related events, Conferences, Trade Shows, Training, etc.