--- title: "AI Voice Agents | OOZOU" description: "Advanced voice agents with full telephony integration — answering and placing real phone calls in 25+ languages, including Thai." canonical: https://oozou.com/services/ai-voice-agents locale: en --- # AI Voice Agents > Advanced voice agents with full telephony integration — answering and placing real phone calls in 25+ languages, including Thai. We build production voice agents that hold natural phone conversations — not chat widgets with a microphone. They answer inbound calls and place outbound ones over real phone lines, speak 25+ languages including Thai, and connect to your CRM, booking, and support systems to actually get things done: qualifying leads, confirming appointments, answering account questions, and handing off to humans with full context when it matters. We hold ourselves to the same standard we sell — every call to the OOZOU office is answered by Tim, the voice agent we built in-house. ## Don't take our word for it — call Tim Every call to the OOZOU office is answered by Tim, the voice agent we built in-house. Give Tim a call and have a chat. Phone: +66 2544 0000 ## Key Capabilities - **Full Telephony Integration**: Inbound and outbound calling over real phone lines — SIP, PSTN, and existing numbers — with transfers, voicemail detection, and call recording. - **25+ Languages, Including Thai**: Natural speech recognition and synthesis across 25+ languages, with first-class Thai support and mid-call language switching. - **Natural, Low-Latency Conversation**: Sub-second responses, interruption handling, and voices tuned to your brand — callers talk normally, the agent keeps up. - **Deep System Integration**: Agents that act, not just talk: booking appointments, updating CRM records, checking orders, and escalating to humans with full context. ## Technologies We Use OpenAI Realtime API, Anthropic Claude, Twilio, SIP / PSTN, LiveKit, Deepgram, ElevenLabs, WebRTC, Node.js, Python ## Our Approach 1. **Discovery**: Call flows, use cases, languages, and success metrics 2. **Conversation Design**: Dialogue flows, persona, voice, and edge-case handling 3. **Development**: Agent logic, tool integrations, and guardrails 4. **Telephony Integration**: Phone numbers, SIP trunks, routing, and transfers 5. **Testing**: Simulated and live calls across languages and scenarios 6. **Monitoring**: Call analytics, transcripts, and continuous improvement ## Budgets of All Sizes We work with budgets across the full range. The team adapts scope, size, and engagement model to what you can spend, without lowering the bar on how we build. - **Enterprise**: Full delivery teams for complex platforms, with the security, compliance, and process rigor large organizations expect. - **Growing Teams**: Flexible engagements that scale with you. Add capacity when you need it, scale back when you don't, without renegotiating from scratch. - **Small Business & Startups**: Lean, focused builds that get the essentials right. We help you trim scope, not quality, so a modest budget still ships a solid product. ## Why This Matters - **24/7 Availability**: Every call answered instantly — nights, weekends, and holidays, with no hold queue. - **Lower Cost per Call**: Automate routine calls end-to-end and reserve human agents for the conversations that need them. - **Better Caller Experience**: No IVR menus, no waiting — callers speak naturally in their own language and get things done. - **Elastic Scale**: Handle ten calls or ten thousand at once — campaigns and peak hours without extra headcount. ## Frequently Asked Questions ### What can OOZOU's AI voice agents do? They answer and place real phone calls: qualifying leads, booking appointments, handling support queries, and routing to humans when needed, with transfers, voicemail detection, and call recording. They speak more than 25 languages, including Thai and English. ### Do the voice agents work with our existing phone numbers? Yes. We integrate with SIP and PSTN telephony through providers like Twilio and LiveKit, so agents can run on your existing numbers alongside your current call flows. ### Can I try an OOZOU voice agent before committing? Yes. Call the live demo number on this page and talk to one. A typical engagement then starts with a pilot around one call flow, proves it works on real calls, and expands from there. ### Which technologies power OOZOU's voice agents? We build on the OpenAI Realtime API and Anthropic Claude, with Deepgram for speech recognition, ElevenLabs for voices, and Twilio, LiveKit, and WebRTC for telephony and audio transport. ## Related All services: [Services](https://oozou.com/services) ([markdown](https://oozou.com/services.md)). Case studies: [Case Studies](https://oozou.com/case-studies) ([markdown](https://oozou.com/case-studies.md)). --- Contact OOZOU: hello@oozou.com · +66 2544 0000 · https://oozou.com/contact More for AI agents: https://oozou.com/llms.txt · every page has a markdown twin at its URL plus ".md"