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Open source PBX and telephony toolkit for VoIP systems
Updated
Asterisk is an open source communications framework that turns a server into a PBX, VoIP gateway, conference server or IVR platform. Developers and telecom teams use it to build custom telephony systems, and it is maintained as an open source project that is supported by Sangoma.
Telecom engineers, system integrators, contact center developers and businesses that want a self-hosted phone system use Asterisk. It is also the engine behind many commercial phone systems, and it suits teams with the technical skills to configure and maintain it.
Asterisk is free and open source software, so there is no license fee. Costs come from hosting, telephony carriers, hardware and any commercial support or distributions you choose, such as products built on Asterisk by vendors like Sangoma.
Common alternatives to Asterisk include FreePBX, FreeSWITCH and 3CX. Compare scope, deployment model, integrations and pricing before choosing.
Pricing Model
FREE
Starting Price
$0/mo
Free Options
Free version
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Compliance Standards
SOC 2 Type II
EnterpriseISO 27001
EnterpriseGDPR Compliant
GlobalHIPAA
HealthcarePCI DSS
FinanceCCPA
PrivacyFedRAMP
GovernmentCSA STAR
CloudDeployment & Data
Data Residency Options
Verify with vendor for your specific region requirements.
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Cloud business phone, video, and messaging (UCaaS)
