Keycloak OpenID Connect Integration for the Vodia PBX
Published on:
September 12, 2025
Vodia’s PBX now integrates with Keycloak OpenID Connect, providing secure single sign-on for users so they can access all connected applications without repeated authentication. Logging out from one application automatically logs the user out of all connected systems, simplifying user management and improving security. Keycloak, a Cloud Native Computing Foundation project, supports standard protocols including OpenID Connect, OAuth 2.0, and SAML, offering enterprise-grade identity and access management. To ensure proper integration, Keycloak user emails must match the corresponding PBX extension emails. Complete guidance is available in the Vodia Keycloak integration guide.
Vodia’s PBX now supports Keycloak OpenID Connect, enabling secure single sign-on for your users. Once a user logs in through Keycloak, they can access all connected applications without repeated authentication. Logging out from one application also logs the user out from all connected systems, simplifying user management and improving security.
What Is Keycloak?
Keycloak is a Cloud Native Computing Foundation (CNCF) incubation project. CNCF is the open source, vendor-neutral hub of cloud native computing, hosting projects such as Kubernetes and Prometheus that make cloud native universal and sustainable. A number of global organizations have recently shared their Keycloak case studies, including the Austrian Business Service Portal, Hitachi, and OpenTalk.
How Keycloak Works
Vodia users can now authenticate with Keycloak, rather than with individual applications, so these apps don’t require authenticating users, login forms, and storing users. Once a user logs in to Keycloak, it isn’t necessary to log in again to use another application.
This also applies to logging out, as Keycloak enables single-sign out (SSO): once a user logs out of an application, this user is automatically logged out of all applications using Keycloak. Keycloak is based on standard protocols and provides support for OpenID Connect, OAuth 2.0, and SAML.
The Integration of the Vodia Phone System with Keycloak
The integration of the Vodia phone system with Keycloak provides enterprise-grade identity and access management.
This allows for secure Single Sign-On (SSO), but Keycloak user emails must match the corresponding extension email addresses on the PBX.
The Vodia phone system is the best choice for enterprises and SMBs looking to build feature-rich, robust, scalable, and secure business communication ecosystems that integrate with the world’s best business communications software - our integration with Keycloak OpenID Connect is just the latest in a series of integrations we’ve completed with some of the world’s best business communications software, including ActiveCampaign, Freshdesk, HighLevel, Microsoft Dynamics 365, monday.com, and Odoo Cloud, among others. We want our customers to have everything they need to build external and internal communications stacks that drive growth and profitability.
In 2026, a modern phone system must go well beyond basic calling. Core requirements now include built-in AI for smarter call handling and transcription, real-time analytics dashboards for visibility and control, flexible auto attendants to route calls efficiently, seamless Microsoft Teams integration, and robust mobile apps that support hybrid and remote work. Clear separation between business and personal calls protects work-life balance, while reliable white-glove support ensures these capabilities work smoothly in real-world environments as communication needs evolve.
Legacy phone systems may still work, but they often come with hidden costs, limited scalability, and little support for hybrid work. Aging hardware, ongoing maintenance, and rigid infrastructure can quietly hold businesses back as they grow. Cloud-based VoIP systems remove these constraints by reducing telephony expenses, improving flexibility, and enabling teams to communicate seamlessly from anywhere. For many organizations, modernizing business telephony is no longer optional, it is a practical step toward efficiency and resilience.
A streamlined integration connects the Vodia PBX with the ElevenLabs Voice AI Platform using a lightweight IVR JavaScript script and native SIP REFER for call transfers. Audio and call control are handled entirely through standard SIP signaling, while all conversational logic, prompts, voice selection, and routing rules are configured in the ElevenLabs dashboard. This approach removes the need for webhooks or WebSocket connections and keeps the PBX side intentionally minimal, making the deployment clean and production-ready.
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