Creating a Transport Layer Security (TLS) Connection between Vodia and Telnyx
Published on:
June 30, 2023
This comprehensive guide outlines the setup of a secure Transport Layer Security (TLS) connection between Vodia and Telnyx, emphasizing the crucial aspects of data confidentiality and integrity. By following the steps provided, users can establish a secure SIP trunk connection. This TLS connection guarantees encrypted and secure communication, enhancing data protection and privacy for your business.
In this blog we guide you through the process of setting up a TLS connection between Vodia and Telnyx. TLS provides secure communication over the Internet, ensuring the confidentiality and integrity of data exchanged between the two systems; by following the stops below, you can establish a secure connection for your SIP trunk.
Connecting with Telnyx
Create a SIP registration connection in Telnyx.
Step 1: Connecting with Telnyx
Create a SIP registration connection in Telnyx.
Choose "Registration" as the type, then copy your SIP password.
The SIP password will be required when setting up the SIP trunk on the Vodia phone system.
Save and finish the registration.
Edit the connection and enable Secure Real-Time Transport Protocol (SRTP) under "Encrypted Media".
Save the configuration.
Note: Outbound settings already utilize SRTP settings from the inbound settings.
Step 2: Configuring the Vodia Phone System
Navigate to the SIP trunk to create your Telnyx connection in the Vodia phone system.
Click on "Add" and select "Telnyx."
Enter your Telnyx SIP account details: • Name: Provide a name for your trunk. • Password: Enter your Telnyx SIP credentials. • User: Enter your Telnyx user account. • DID: If applicable, enter your Direct Inward Dialing (DID) number. • Save the configuration.
Configure TLS under "Proxy Address" by using the following example: Proxy Address: sip:sip.telnyx.com;transport=tls
Navigate to the SIP trunk to create your Telnyx connection: Click on “Add” and select "Telnyx."
Configure the TLS under "Proxy Address" by using the following example:
Proxy Address: sip:sip.telnyx.com;transport=tls
Step 3: Caller ID and Phone Numbers
To define the Caller ID used when making calls from the Vodia system, follow these steps:
Define the FROM headers and Remote Party ID under the SIP caller-ID presentation: • Choose "custom headers" from your Telnyx SIP trunk. • You can set up the Domain ANI in the Tenant general settings under "dom_settings.htm". • Alternatively, you can set up an ANI on the extension and instruct the header to use "Extension ANI".
By following the above steps, you can establish a TLS connection between Vodia and Telnyx, ensuring secure and encrypted communication for your SIP trunk; this added layer of security helps protect your data and ensures the privacy of your calls. Implementing TLS is a crucial step in maintaining a secure communication infrastructure for your business.
Join Vodia Networks on April 8 for a live, in-depth webinar on how real-time media streaming is powering the future of voice communication. Discover how Vodia PBX version 69.5.6 enables seamless AI integration, live call transcription using the Whisper API, and secure voice data handling. Hosted by Sales Engineer Eric Altman and VoIP Engineer Hamlet Collado, this session will walk you through real-world use cases, including OpenAI and Google Speech-to-Text integrations, MS Teams support, and new security features. You’ll also get a first look at Vodia’s AI roadmap and have the opportunity to ask your questions during a live Q&A.
Whisper, OpenAI’s Automatic Speech Recognition system, delivers multilingual, noise-tolerant, and technical-language-ready transcription through a streamlined encoder-decoder architecture. With Vodia PBX’s integration, organizations can choose between using OpenAI’s service or hosting Whisper AI locally for complete data sovereignty and control. This on-premise option ensures that sensitive call data stays within your infrastructure while still benefiting from powerful transcription capabilities. To explore deployment options, see our Whisper AI on-premise setup documentation, review a self-hosted integration example, or follow our cloud-based call transcription guide.
Vodia Sales Engineer Eric Altman attended Enterprise Connect 2025 on March 18 and 19, where he connected with partners and gained insight into the future of enterprise communications. AI was the clear focus of the event, with discussions centered on agentic systems, chatbots, and generative technologies. “It was certainly the main element in the atmosphere,” Eric noted. He also shared his excitement about Vodia PBX version 69.5.6, which includes real-time AI integration with OpenAI and call transcription using the Whisper API. The event confirmed that AI is rapidly becoming a core component of modern communication platforms—and Vodia is well-positioned to lead the way.
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