AI Voice Agents That Handle Calls
Deploy AI voice agents for inbound and outbound calls — powered by ElevenLabs for natural speech, OpenAI Realtime API for sub-500ms response, and Twilio for reliable telephony. Handle support, booking, and sales calls 24/7.
What Your AI Voice Agent Can Do
Six production-ready capabilities for inbound and outbound voice automation.
AI Call Handling
Answer every inbound call instantly — no hold times, no IVR trees. The agent understands natural speech, handles complex questions, and resolves issues end-to-end.
Voice Support Agents
AI-powered customer support over the phone — trained on your product documentation, FAQs, and support playbooks to resolve the most common call types autonomously.
Voice Booking Systems
Automated appointment and reservation booking via phone — checks calendar availability in real time, captures caller details, confirms bookings, and sends follow-up confirmations.
Inbound Call Automation
Replace multi-level IVR menus with a single conversational AI that routes, resolves, and escalates based on caller intent — dramatically reducing average handle time.
Outbound Dialing Agents
Proactive outbound AI that calls your leads and customers — appointment reminders, payment follow-ups, survey collection, and re-engagement campaigns at scale.
Voice-to-CRM Updates
Every call automatically updates your CRM — contact record, call summary, outcomes, and next actions written back to Salesforce, HubSpot, or your custom system in real time.
How We Build Your Voice Agent
From call flow design to live deployment in 4–8 weeks.
Call Flow Design
We map your top call types by volume, script optimal conversation flows for each intent, define escalation triggers, and design the agent's persona and speaking style before any build begins.
Voice Model Selection
We select the right voice synthesis model from ElevenLabs' library — matching tone, accent, and cadence to your brand. Custom voice cloning is available for exact brand consistency.
Telephony Integration
We wire the voice agent into your phone infrastructure via Twilio's programmable voice API or SIP trunking for existing PBX systems. Number provisioning, call routing, and recording setup handled by our team.
Testing & Quality Assurance
Agents are tested on 200+ real call scenarios — edge cases, angry callers, accent variations, and background noise. We measure transcription accuracy, resolution rate, and escalation precision.
Live Deployment & Monitoring
Staged rollout starting at 10% of call volume. Real-time dashboards track call outcomes, escalation rates, and average handle time. Continuous improvement cycles in the first 60 days post-launch.
Technology Stack
AI Voice Agents Across Industries
Industry-specific voice agents trained on domain terminology, compliance requirements, and real call transcripts.
Insurance
FNOL intake over the phone, policy renewal outbound calls, claims status updates
Healthcare
Appointment booking, prescription refill reminders, post-discharge follow-up calls
Real Estate
Inbound property inquiry handling, viewing appointment scheduling, lead qualification
Legal
Initial client intake over the phone, appointment scheduling, document request automation
Logistics
Delivery status calls, exception handling, driver check-in automation
SaaS
Trial-to-paid outbound sequences, renewal reminders, churn recovery calls
Why Teams Choose Infonza for Voice AI
Low-Latency Architecture
We build around the OpenAI Realtime API and WebSocket-based audio pipelines to achieve sub-500ms response times — critical for natural-feeling conversations.
ElevenLabs Voice Quality
Our voice agents use ElevenLabs' highest-quality Turbo v2.5 models for studio-quality speech synthesis that callers consistently fail to identify as AI.
Full Telephony Stack
We handle the entire telephony layer — Twilio number provisioning, SIP integration, call recording, PCI-compliant payment flows, and warm handoff to human agents.
CRM Integration Depth
Every call outcome is written back to your CRM automatically. Contact enrichment, call summaries, sentiment scoring, and follow-up task creation — all without manual data entry.
Compliance-Aware Builds
We implement TCPA-compliant outbound dialing, PII redaction in call recordings, call consent logging, and DNC list checking for regulated industries.
Ready to add AI voice to your phone lines?
Book a free call flow audit. We'll assess your top call types, estimate deflection potential, and scope your first voice agent deployment.
Related Services
Frequently Asked Questions
Everything you need to know about building production AI voice agents.
Add AI Voice to Your Business
Talk to our voice AI engineers. We'll assess your call volume, identify the highest-ROI automation opportunities, and demo a prototype voice agent on your actual call scripts.