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Asterisk is a free and open source framework for building communications applications ... Asterisk powers IP PBX systems, VoIP gateways, conference servers, ... GetStarted Downloads Community Blog Forum Wiki Documentation AstriCon Products Training IPPBX IPPhones VoIPGateways SIPTrunking TelephonyInterfaceCards IVR Software Menu GetStarted Downloads Community Blog Forum Wiki Documentation AstriCon Products Training IPPBX IPPhones VoIPGateways SIPTrunking TelephonyInterfaceCards IVR Software ReadytoGetStartedwithAsterisk? AsteriskisafreeandopensourceframeworkforbuildingcommunicationsapplicationsandissponsoredbySangoma. DownloadAsterisk GetStarted 11500000 DownloadsAnnually DownloadsAnnually 85000 CommunityMembers CommunityMembers 150 CountrieswithInstallations CountrieswithInstallations 11500000 ServersWorldwide ServersWorldwide 85000 NewEndpointsEachYear NewEndpointsEachYear IPPhonesforAsterisk •Full-colordisplays •Multiplelines •Startingat$59 SeeIPPhones Asteriskisthe#1opensourcecommunicationstoolkit. AsteriskpowersIPPBXsystems,VoIPgateways,conferenceservers,andisusedbySMBs,enterprises,callcenters,carriersandgovernmentsworldwide. DownloadAsterisk NeedaPhoneSystem? BuildyourowncustomsystemwithAsterisk?Buyapowerful,low-costturnkeysystembasedonAsterisk?Discoverwhichoptionisrightforyou. GettheGuide AstriCon AstriConisthelongest-runningopensourceconventioncelebratingopensourceprojectsfeaturingAsteriskandFreePBX.Consistingofmultipletracks,sessions,andEXPOhall,AstriConoffersvariouslevelsofeducationsessionsandprovidesattendeesnetworkingopportunitieswithsomeofthebestintheopensourcecommunity. LearnMore AsteriskNews Asterisk18.12.1NowAvailable May19,2022 Asterisk16.26.1NowAvailable May19,2022 Asterisk19.4.1NowAvailable May19,2022 Asterisk19.4.0NowAvailable May12,2022 Asterisk18.12.0NowAvailable May12,2022 ViewAll SecurityAdvisories AST-2022-001:res_stir_shaken–Resourceexhaustionwithlargefiles April14,2022 https://downloads.asterisk.org/pub/security/AST-2022-001.htmlhttps://issues.asterisk.org/jira/browse/ASTERISK-29872 AST-20220-002:res_stir_shaken:BlindSSRFvulnerabilities April14,2022 https://downloads.asterisk.org/pub/security/AST-2022-002.htmlhttps://issues.asterisk.org/jira/browse/ASTERISK-29476 AST-20220-003:${SQL_ESC()}notcorrectlyescapingaterminating\ April14,2022 https://downloads.asterisk.org/pub/security/AST-2022-003.htmlhttps://issues.asterisk.org/jira/browse/ASTERISK-29838 ViewAll Whatcanwehelpyoufind? DownloadAsterisk Asterisk FreePBX AsteriskSourceCode AsteriskNews SecurityAdvisories GetStarted AsteriskApplications Features Glossary OtherResources Docs Blog Forums Training Join