What you can build
- Use AI to answer, route, summarize, or escalate real phone calls.
- Connect SIP/PSTN provider workflows to browser and dashboard experiences.
- Support callbacks, passcodes, IVR-style prompts, campaigns, and handoff logic.
Telephony · SIP & PSTN
SIP AI Agents and PSTN Voice Automation
MediaSFU connects the phone side of the business to AI and WebRTC surfaces, so a call can move between automation, human review, browser agents, and operational dashboards.
The short answer
Connect Twilio, Telnyx, Vonage, Plivo or any SIP trunk to MediaSFU and keep your numbers; an AI agent then answers or places calls on them. Your carrier bills its minutes and numbers directly, and MediaSFU bills call audio and agent minutes.
- Call audio
- $0.0001 per minute, with no SIP bridge surcharge
- AI agent
- $0.002 per minute, on top of call audio
- Worked example
- 1,000 ten-minute agent calls cost $21 a month on MediaSFU ($0.021 each)
- Carriers
- Twilio, Telnyx, Vonage, Plivo or any SIP trunk; a shared SIP pool covers outbound calls while your numbers are set up
- Call directions
- Inbound and outbound, plus outbound campaigns of up to 100 contacts per batch
- Human handoff
- Take over mid-call with the live transcript in front of you
- Free to start
- 50,000 free minutes that never expire, no card needed
Rates as published on the pricing page, checked 2026-10-26. Volume discounts apply automatically at scale.
Why MediaSFU fits
- Telephony setup lives beside AI pipeline, recording, notes, and widget workflows.
- Teams can embed call controls and agent dashboards instead of building every surface.
- Provider configuration paths keep phone and AI infrastructure visible to operators.
MediaSFU SIP and phone-agent capabilities
- SIP configuration and phone-provider setup guidance
- AI phone-agent pairing with STT, LLM, TTS, transcripts, and handoff
- Callback, passcode, IVR-style prompt, and call-state workflow support
- Campaign and cloud phone surfaces for outbound and operational calling patterns
- Embedded calls dashboards and WebRTC surfaces for human operators
One agent, every channel
Put your phone agent on your website too.
The agent that answers your number can also greet visitors as a character, a chat window or a camera concierge. Try all four in your browser.
Where to go next
This page is the short answer. These go deeper: implementation guides, pricing and the product pages behind it.
Questions people ask
Can SIP/PSTN calls connect to AI agents?
Yes. MediaSFU telephony workflows can be paired with AI pipeline configuration for phone-agent and handoff use cases.
Can humans take over or review AI-assisted calls?
Yes. MediaSFU includes operator-oriented surfaces, handoff patterns, recordings, transcripts, and AI notes for review workflows.
Is this a replacement for every phone provider?
MediaSFU is the real-time workflow layer. Teams can configure compatible telephony providers and use MediaSFU for the AI, WebRTC, widget, and operational surfaces around those calls.
Last updated: October 26, 2026