Asterisk is a complete PBX in software. It runs on Linux, BSD, Windows (emulated) and OS X and provides all of the features you would expect from a PBX and more. Asterisk does voice over IP in four protocols, and can interoperate with almost all standards-based telephony equipment using relatively inexpensive hardware.

Asterisk provides Voicemail services with Directory, Call Conferencing, Interactive Voice Response, Call Queuing. It has support for three-way calling, caller ID services, ADSI, IAX, SIP, H.323 (as both client and gateway), MGCP (call manager only) and SCCP/Skinny. Check the Features section for a more complete list.

Asterisk needs no additional hardware for Voice-over-IP, although it does expect a non-standard driver that implements dummy hardware as a non-portable timing mechanism (for certain applications such as conferencing). A single (or multiple) VOIP provider(s) can be used for outgoing and/or incoming calls (outgoing and incoming calls can be handled through entirely different VOIP and/or telco providers)

For interconnection with digital and analog telephony equipment, Asterisk supports a number of hardware devices, most notably all of the hardware manufactured by Asterisk's sponsor, Digium. Digium has single and quad span T1 and E1 interfaces for interconnection to PRI lines and channel banks . In addition, single to quad port analog FXO and FXS cards are available and are popular for small installations. Other vendors' cards can be used for BRI (ISDN2) or quad- and octo- port BRI based upon CAPI compatible cards or HFC chipset cards.

For interconnection with the cellular network (GSM or CDMA), Asterisk can use the Celliax channel driver or chan_mobile that is in the trunk now and there is also a unofficial backported version.

Lastly, standalone devices are available to do a wide range of tasks including providing fxo and fxs ports that simply plug into the LAN and register to Asterisk as an available device.

If you are looking for a software-based IP-PBX for Windows, 3CX offers a highly-regarded product.

The current release versions of Asterisk are 1.2.37, 1.4.36,,, and Asterisk 1.8.0. The current beta is Asterisk 1.8 beta 5.

This Wiki covers both the stable and the development branch of Asterisk. When adding new commands, applications and options, please also add a note on *when* this was added so that users may compare with their version date.

Know All About Asterisk VoIP

November 29, 2016 –There are times when you would need to have Asterisk VoIP services for your company. This type of service has much better quality and reliability than traditional VoIP companies that are
VoIP providers that have options for call centers and businesses. You can find some great options for your required services without having to settle for minimum payments or any set monthly fees.

Daily Asterisk News

VoIP Today News

    Other Asterisk News

    Starting Out



    Asterisk based Solution


    Administration and system layout




    General Reference

    Country-Specific Information

    Commercial support

    SIP Service Providers

    DIDForSale SIP Trunking - DIDForSale provides largest coverage over US, UK and Canada. Offer Unlimited SIP Trunking Service for businesses.
    Cebod Telecom provides SIP trunks, Virtual PBX telephony solutions, internet services for small to mid-sized enterprises, and larger companies delivering high- quality voice, premium features and unified communications. The company offers a state-of-the-art Pay-Per-Line business phone service model, empowering businesses to pay per line as opposed to paying per user in the company. In addition offers all-inclusive premium IP PBX and dial tone features including auto attendant, call tracking, call logs, music on hold, call forwarding, voicemail, call queue, conference bridge, e-Fax, and SMS and more. High call quality, unlimited user extensions, and unlimited calling within USA and Canada are some of the benefits also offered for each phone plan. Contact us today for a free demo.
    • DIDLive provides Asterisk SIP Inbound Service. Local DID Numbers in USA/Canada & 40 other countries. USA/Canada Toll Free Numbers.
    Contact DIDLive at 1-212-901-0800 or visit us at

    User Groups

    Weekly SIP Asterisk Users Conference

    • THis conference is open to users at all levels of asterisk expertise

    Interesting and Unusual Projects

    • Village Telco Using Asterisk in a WiFi Mesh network to provide phone service in rural areas

    Howtos and Tutorials

      Created by: jht2, Last modification: Wed 09 of Aug, 2017 (19:40 UTC) by freevoice
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