FreJun Blog

Twilio migration switch flipped from Twilio Voice to FreJun Teler WebSocket media transport

Migrating from Twilio Programmable Voice to Teler

A technical guide to twilio migration covering the exact steps to move from Twilio Programmable Voice to Teler's WebSocket-based voice
LiveKit agents on real telephony: a phone call connected through FreJun Teler to a LiveKit voice agent.

LiveKit Agents with Real Telephony

LiveKit Agents is an open-source framework for building real-time voice AI applications in Python and Node.js. This guide covers how
Gemini Live API joined to a phone call through the FreJun Teler media bridge over a WebSocket.

Gemini Live API for Voice Agents on the Phone

A practical guide to connecting the Gemini Live API to live phone calls in 2026. Covers the WebSocket transport, the
elevenlabs api live phone call teler 8khz audio stream feature

ElevenLabs API on a Live Phone Call

Connecting the ElevenLabs API to a live phone call requires bridging two incompatible audio worlds: ElevenLabs streams PCM at 24
deepgram api live call transcription teler audio stream feature

Deepgram API for Live Call Transcription

A technical walkthrough of using the Deepgram API for live call transcription in 2026, covering WebSocket transport, audio format requirements
ultravox ai phone line barge in interruption handling teler feature

Ultravox AI: Putting It on a Phone Line

Putting Ultravox AI on a live phone line requires bridging a real-time voice model to PSTN infrastructure that was never
Twilio media streams concept: a phone call streamed as audio over a secure WebSocket to an AI voice agent.

Twilio Media Streams: How They Work and the Alternatives

Twilio Media Streams forks live call audio over a secure WebSocket connection, delivering raw μ-law audio at 8 kHz for
Voice AI glossary feature image: carrier, media and application layers shown as SIP, waveform and AI icons.

Voice AI Glossary: 40 Terms Developers Actually Use

A practical Voice AI glossary covering 40 terms developers encounter when building real-time phone agents: STT, TTS, VAD, barge-in, SIP
Call recording API flow: a live phone call streamed through FreJun Teler into a compliant, secured recording file.

Call Recording API: Implementation and Compliance

A practical guide to implementing a call recording API over telephony infrastructure in 2026. Covers Twilio's Recording resource, TwiML verb

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