Play 04 — Call Center Voice AI 📞
Voice-enabled customer service with real-time STT→LLM→TTS streaming.
Build a phone-answering AI agent. Azure Communication Services handles the call, Speech Service converts audio to text, GPT-4o processes intent and generates a response, then TTS speaks it back — all streaming in real time.
Quick Start
cd solution-plays/04-call-center-voice-ai
az deployment group create -g $RG -f infra/main.bicep -p infra/parameters.json
code . # Use @builder for voice pipeline, @reviewer for latency audit, @tuner for costKey Metrics
- Intent accuracy: ≥95% · Response latency: <2s · Resolution rate: ≥70%
DevKit
| Primitive | What It Does |
|---|---|
| 3 agents | Builder (STT/TTS pipelines), Reviewer (latency/compliance), Tuner (response time/cost) |
| 3 skills | Deploy (107 lines), Evaluate (102 lines), Tune (114 lines) |
Architecture
📐 Full architecture details — data flow, security architecture, scaling guide
Cost Estimate
| Service | Dev/PoC | Production | Enterprise |
|---|---|---|---|
| Communication Services | $15 (PAYG) | $150 (PAYG) | $600 (PAYG) |
| Azure AI Speech | $0 (Free) | $120 (Standard) | $450 (Custom Neural Voice) |
| Azure OpenAI | $30 (PAYG) | $200 (PAYG) | $800 (PTU Reserved) |
| Container Apps | $10 (Consumption) | $100 (Dedicated) | $300 (Dedicated HA) |
| Blob Storage | $2 (Hot LRS) | $20 (Hot LRS) | $80 (Hot GRS) |
| Key Vault | $1 (Standard) | $3 (Standard) | $10 (Premium HSM) |
| Application Insights | $0 (Free) | $30 (Pay-per-GB) | $100 (Pay-per-GB) |
| Total | $58/mo | $623/mo | $2,340/mo |
💰 Full cost breakdown — per-service SKUs, usage assumptions, optimization tips
📖 Full docs · 🌐 frootai.dev/solution-plays/04-call-center-voice-ai
FAI Manifest
| Field | Value |
|---|---|
| Play | 04-call-center-voice-ai |
| Version | 1.0.0 |
| Knowledge | F1-GenAI-Foundations, R2-RAG-Architecture |
| WAF Pillars | security, reliability, cost-optimization, responsible-ai |
| Groundedness | ≥ 85% |
| Safety | 0 violations max |
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