Custom AI Voice Agents That Handle Real Calls.First Prototype in 48 Hours
We build AI voice agents that go live in production. Inbound and outbound call automation, HIPAA- and GDPR-compliant, LLM-agnostic, live within 6 to 10 weeks. Built by the team behind BotPenguin.
AI Voice Agent Services Built by Conversational AI Specialists
Custom voice agents built on Retell AI, ElevenLabs, and Deepgram wired into your phone systems, CRMs, and workflows from day one.
Inbound Call Automation
Replace tier-1 support, FAQ handling, and routing. Connects to your CRM and knowledge base. Handles the 70 to 80% of calls that follow repeatable conversation patterns, 24/7, zero hold time. Human handoff with full conversation context passed in real time.
Outbound Calling Agent
Renewals, appointment reminders, EMI follow-up, lead reactivation, post-discharge patient outreach. Scales to hundreds of concurrent calls. TCPA and DNC compliant. Human-sounding, low-latency, CRM-synced with results logged automatically.
IVR Replacement
Natural language instead of press-1-for-X. Callers describe what they need. The agent routes, answers, or completes the transaction. No menu navigation, no repeat-yourself loops, no 8-minute hold queues for a question that takes 30 seconds to resolve.
Appointment Scheduling Agent
Connects to your calendar system. Books, reschedules, and confirms via voice and WhatsApp. Handles cancellations and waitlist management. For healthcare clients, built with PHI protection from the architectural layer, not the application layer.
Lead Qualification Agent
Inbound leads screened, qualified, and scored before reaching your sales team. Intent captured in structured format. CRM-integrated. Qualified leads handed off with full conversation context and intent score. Unqualified leads triaged automatically.
Collections and Renewal Automation
Policy renewals, EMI reminders, premium collections, claim intake, payment confirmations. Voice agents handle these with full audit trails. On objection, dispute, or emotional signal, the system escalates to a human agent with the conversation summary already visible before they say hello.
Customer Support Tier-1 Agent
Order status, delivery queries, account questions, returns, transaction verification: the 70 to 80% of support calls that follow the same 15 conversation patterns. Deployed on your telephony infrastructure. Integrates with your helpdesk, CRM, and order management system. Escalation protocols fully configurable.
Why Build Your AI Voice Agent with Relinns?
Relinns builds custom AI voice agents end-to-end: architecture design, LLM selection and testing, STT/TTS optimisation, telephony integration, compliance layer, load testing, deployment, and post-launch monitoring.
First Prototype in 48 Hours
A working voice agent running on your actual use case within 48 hours of kickoff. Not a demo on our data. Yours.
Compliance Built From Architecture
HIPAA, GDPR, and PCI-DSS are architecture decisions. Built in before the first line of code, not added after deployment.
Sub-300ms Latency Target
Human conversation has a rhythm. We benchmark latency during every POC and optimise before anything reaches production.
LLM-Agnostic. No Vendor Lock-In.
Every system we deliver allows model swaps, telephony migrations, and integration changes without rebuilding the pipeline.
Platform or Custom. Your Requirements Decide.
Platform-based when the use case and scale fit. Custom stack when compliance, integrations, or call volume demand it.
90-Day Post-Launch Support
Bug fixes, prompt tuning from real transcripts, edge case handling, and weekly performance reviews for the first 30 days after go-live.
AI Voice Agent Development by Industry
Voice AI delivers the highest ROI where routine call volume is high and the cost of a human agent per call is measurable. These are the verticals where we have live production deployments.
Healthcare
Patient intake, appointment scheduling, prescription refill routing, care gap outreach, post-discharge follow-up. HIPAA compliance built at the architecture level. BAA-ready. Integrates with Epic, Cerner, and custom EHR systems.
Finance
Logistics & Supply Chain
Manufacturing
Retail & eCommerce
Real Estate
Education
Restaurants & QSR
What Makes Relinns the Right AI Voice Agent Partner?
We do not propose six-month projects without first proving the concept on your real data. Every engagement starts small, scales on demonstrated results, and gives you a decision gate at each stage.
Production Track Record
We build on platforms when they fit. When they don't, we build the stack. Every system ships with load testing, latency benchmarks, and compliance architecture in place before live traffic reaches it.
No Vendor Lock-In
LLM-agnostic architecture allows model swaps, telephony migrations, and integration changes without rebuilding the pipeline. Built on Retell AI, ElevenLabs, Deepgram, and Twilio; swappable when your requirements change.
Working Prototype in 48 Hours
A working voice agent on your actual use case within 48 hours of kickoff. Your team can demo it internally before production scope is agreed. You see it working before you commit to the build.
End-to-End Build
Architecture design, LLM selection and testing, STT/TTS optimisation, telephony integration, compliance layer, load testing, deployment, and post-launch monitoring. One team, full cycle.
Compliance From Architecture
HIPAA, GDPR, and PCI-DSS sit at the architecture level. PHI handling in STT/TTS pipelines, encrypted storage, audit log design, and data residency controls — built in before the first line of code.
90-Day Post-Launch Support
Bug fixes, LLM prompt tuning from real transcripts, edge case handling, and weekly performance reviews for the first 30 days after go-live. Beyond 90 days: retainer-based monitoring and quarterly model retraining.
Our Voice Agent Deployments in Production
Live builds across healthcare, insurance, ecommerce, and logistics. Each project started with a POC on real call data and scaled to full production.
Case Study
Alta International
Alta International, a UK property agency, was losing high-intent leads to slow response times and after-hours missed calls. We built an autonomous AI voice agent that answers inbound enquiries, qualifies buyers and sellers against their criteria, books viewings live inside the call via Calendly, and fires outbound follow-ups the moment a portal lead enters the CRM. The working agent was live within 48 hours of kickoff.
Integrations
Microsoft Dynamics
Calendly
Retell AI
Twilio
ElevenLabsCountry
UKPlatform
WebResults
0s
Speed-to-lead on every portal enquiry
100%
Calls logged and transcribed automatically
Video Testimonials
Hear how Relinns helped founders and enterprises ship reliable, production-ready products with confidence.
I’ve been working with Relinns Technologies for the past few years on designing a custom drilling app. Our app focuses on geotechnical, environmental, water wells, and exploration drilling. What stands out about the Relinns team is their creativity in design and their organized, consistent approach. Thanks for the incredible work.
Sherry Micklejohn
President and Founder, Authentic Drilling
It's been a year, and the customer is very happy and satisfied with our team. Drinkyfy alcohol delivery app to shop the widest selection of liquor, beer, and wine delivered to your doorstep. Drinkyfy now serves in Massachusetts, USA."
Ravi Verma
Founder, Drinkyfy
Relinns is the best mobile app development company that helps you build a mobile app for your business to reach your customers online.
Quinton Simpson
Founder, Cheers@Home
How We Build Your Voice Agent
Every engagement starts with your actual call data, your actual workflows, and your actual compliance environment. You see a working agent before production scope is agreed.
Discovery
Architecture Design
POC Build
Integration and Development
Testing
Deploy and Monitor
Technology Stack
Discover the proven technology stack our engineers use to deliver reliable, production-ready AI voice agents.
Large Language Models
GPT-4o, Claude 3.5 Sonnet, Meta Llama 3, Mistral, Google Gemini
Speech Recognition (STT)
Deepgram Nova-2, OpenAI Whisper, Google Speech-to-Text
Voice Synthesis (TTS)
ElevenLabs, Deepgram Aura, OpenAI TTS, Azure TTS, Amazon Polly
Telephony & Orchestration
Twilio, Telnyx, SignalWire, WebRTC, SIP
CRM & Scheduling
Salesforce, HubSpot, Microsoft Dynamics, Zoho, Pipedrive, Calendly, MS Bookings, Google Calendar
Security and Compliance Built Into Every Voice Agent We Build
Relinns delivers compliant voice automation with PHI handling, encrypted storage, audit logging, and data residency controls aligned to global standards.
GDPR
Ensure GDPR-aligned voice automation with strong data controls, consent handling, secure call storage, and privacy protection.
PCI DSS
Support PCI-DSS-compliant payment confirmation and collection calls with secure handling, encryption, and validated workflows.
HIPAA
Enable HIPAA-aligned healthcare voice agents with PHI protection built into STT/TTS pipelines and BAA-ready architecture.
FERPA
Deliver FERPA-aligned education voice agents protecting student data through controlled access and secure systems.
FHIR
Implement FHIR-aligned healthcare integrations with accurate data exchange, interoperability, and validated workflows.
SOC2 Compliance
Achieve SOC 2-aligned voice automation with secure architecture, encrypted storage, and consistent audit controls.
Frequently Asked Questions
How long does it take to build an AI voice agent?
A working prototype on your actual use case runs within 48 hours of kickoff. Full production deployment typically goes live within 6 to 10 weeks, depending on integrations, compliance requirements, and call volume.
Are your AI voice agents compliant with HIPAA, GDPR, and PCI-DSS?
Yes. Compliance is built at the architecture level before the first line of code. We handle PHI protection in STT/TTS pipelines, encrypted storage, audit logging, and data residency controls, and we are BAA-ready for healthcare clients.
What does LLM-agnostic mean for my voice agent?
Your agent is not locked to a single model or vendor. The architecture allows model swaps, telephony migrations, and integration changes without rebuilding the pipeline, so you can adapt as requirements or pricing change.
Which platforms and tools do you build on?
We build on Retell AI, ElevenLabs, Deepgram, and Twilio, with LLMs including GPT-4o, Claude 3.5 Sonnet, Llama 3, Mistral, and Gemini. We use platform-based or fully custom stacks based on your use case, scale, and compliance needs.
Can the voice agent integrate with my CRM and phone system?
Yes. Agents connect to CRMs like Salesforce, HubSpot, Microsoft Dynamics, Zoho, and Pipedrive, scheduling tools like Calendly and Google Calendar, and telephony via Twilio, Telnyx, SignalWire, WebRTC, and SIP.
How does the agent hand off to a human?
On objection, dispute, or any signal that needs a person, the agent escalates to a human with the full conversation summary already visible before they say hello. Escalation protocols are fully configurable.
What types of calls can the voice agent handle?
Inbound call automation, outbound calling, IVR replacement, appointment scheduling, lead qualification, collections and renewals, and tier-1 customer support — covering the 70 to 80% of calls that follow repeatable patterns.
How low is the response latency?
We target sub-300ms latency so conversations feel natural. Latency is benchmarked during every POC and optimised before anything reaches production.
What support do you provide after launch?
90-day post-launch support including bug fixes, prompt tuning from real transcripts, edge case handling, and weekly performance reviews in the first 30 days. Beyond 90 days, we offer retainer-based monitoring and quarterly model retraining.
Do you build a proof of concept before full development?
Yes. Every engagement starts with a POC on your real call data. You see a working agent and can demo it internally before production scope is agreed, with a decision gate at each stage.