# AI Voice Agent Development | Alher Tech

> AI agents that make and answer real phone calls: natural voice, your brand, 24/7. Self-hosted AI infrastructure and bilingual support.

- Canonical page: https://alhertech.com/en/services/ai-voice-agent/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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AI voice agents that answer and make real calls in your brand's tone, on your own phone number, 24/7, inbound and outbound.

## What AI Voice Agent Can Do for Your Business

- **Inbound + Outbound**: Call volume is unpredictable, mornings spike, lunch dies, a campaign floods the line at 8pm. An AI voice agent scales instantly, handles the first-line triage, books the appointment or qualifies the lead, and only transfers genuinely complex calls to your humans.
- **Natural Voice That Sounds Like You**: We pick from premium neural voices (ElevenLabs, Cartesia) or clone your receptionist's voice, with proper sub-second latency so it feels like a real human.
- **Books Appointments Live**: The agent reads your calendar in real time, proposes slots, locks the booking and sends confirmation, all before hanging up.
- **Smart Hand-off to Humans**: When the conversation gets complex, the agent transfers the call with a full spoken summary so your team picks up with context, not cold.
- **Every Call Transcribed & Scored**: Full transcripts, sentiment scoring and tagging land in your CRM automatically. Better data than any human call center.
- **Any Language on the Same Number**: Our bilingual team ships English and Spanish content natively. Your AI agent speaks your customers' language without awkward translations.
- **Translated for Whoever Picks It Up**: When a conversation is handed to a person, the whole thread is translated into the language your staff work in, and their replies go back out in the customer's language. Nobody on your team has to understand the language the customer wrote in.
- **Your Own Chat, Not Only WhatsApp**: WhatsApp is one channel, not the plan. We build real-time chat straight into your own website or app, as we did for Boathous and ReservPark, and connect Instagram, web chat, email or the phone line to the same assistant, so the conversation lives where your customers already are.
- **Fits the Tools You Already Run**: Our bilingual team ships English and Spanish content natively. Your AI agent speaks your customers' language without awkward translations.

## How We Build Your AI Voice Agent

- **Call Flow Mapping**: We listen to recordings of your current calls in your business and map the top 5 call intents (booking, question, complaint, transfer, sales).
- **Voice & Personality**: We pick or clone the voice, define the agent's name and tone, and write the opening greeting.
- **Telephony Wiring**: Twilio, Vonage or your existing PBX. We route the calls to the AI with sub-second latency.
- **Integrations**: Calendar, CRM, payment gateway, ticketing. Whatever the agent needs to actually do the job.
- **Pilot with a Shadow Line**: We launch on a secondary number first, A/B against your human team and tune before cut-over.
- **Full Launch & Monitoring**: Dashboards show every call, transcript, outcome and cost, with weekly tuning.

## AI Technologies We Use

From self-hosted open-source models to cloud APIs, we choose the right tool for each ai voice agent use case.

## Related services

Neighbouring problems we also solve, in case the one that brought you here is not the first to tackle.

- [AI Chatbots](https://alhertech.com/en/services/ai-chatbot/)
- [AI for Clinics](https://alhertech.com/en/services/ai-for-healthcare/)
- [AI Agents & Automation](https://alhertech.com/en/services/ai-agents/)
- [All our services](https://alhertech.com/en/services/): The full catalogue, from web and mobile to AI, data and maintenance.

## AI Voice Agent: FAQ

### Does it sound robotic or natural?

Modern neural voices (ElevenLabs, Cartesia) are practically indistinguishable from a human in short exchanges. We also tune pacing, interruption handling and filler words so conversations feel genuinely natural.

### Can it use my existing phone number?

Yes, we port your number to Twilio or Vonage, or set up a SIP trunk to your current PBX. Your customers keep calling the number they already know.

### What happens when a call is too complex?

The agent transfers the call to a human in your team, speaking a one-sentence summary of context first. No customer is ever left talking to a bot against their will.

### How much per call?

There are two parts, a build, and a variable cost per call minute covering telephony, LLM and TTS. Both depend on your call volume and the voices and languages you need, so we quote a monthly flat for setup plus expected volume after a free call with one of our engineers.

### Is it GDPR compliant?

Yes. We play a consent announcement at the start of every recorded call, process data in EU regions, and offer full self-hosted deployment for regulated sectors (legal, healthcare, finance).

### Do you work with businesses across Spain and internationally remotely?

Yes. We work fully remotely with clients across Spain, Europe, the US and LATAM. We run video calls, live demos and collaborative documentation for every milestone, and we're available in your time zone.