Running AI voice agents on real EU phone numbers: what works in production?

say-what-floris · reddit · 2026-10-30

A Reddit user asks for production-proven setups to run inbound AI voice agents (booking, support) on real European numbers (DE/FR/ES/UK), ruling out SignalWire (no EU provisioning) and softphone-on-VPS hacks in favor of native SIP trunks or platforms owning the telephony layer. Key open questions: carrier/SIP trunk choice, agent stack (Vapi, Retell, LiveKit, Pipecat, custom), EU-region hosting of media/STT/LLM/TTS for latency, and gotchas around EU carrier registration, CLI presentation, and mobile termination rates. Author promises to share findings once live.

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