📘 Guide

AI voice agents: the complete FAQ for small businesses

Small businesses' questions about AI voice agents are about price, phone number, calendar, limits and data. In short, at Sayelo: from €39 excl. VAT/month, keep your number by call forwarding or, in France, by porting, Google Calendar, Microsoft 365 or Cal.com, HDS hosting and a 14-day free trial.

Since we started setting up voice agents for tradespeople, practices, agencies and shops, the same questions keep coming up, in the same order: does it really work, how much does it cost, what happens to my number, and what happens when it doesn't understand. Here are the answers, short and grouped by theme.

By Alexandre HaddadPublished on Updated on 9 min read

What it is

What exactly is an AI voice agent?

A program that answers the phone on behalf of your business, understands what the caller says, replies out loud and takes action: an appointment in the calendar, a message, a confirmation SMS, a call transfer. It is not voicemail, not a “press 1” menu and not a text chatbot. The complete guide describes it in detail.

Does it really work, or is it just a demo?

It works, within the limits of what it has been told. An agent handles well the calls covered in its business profile (appointment booking, quote requests, practical questions, defined emergencies) and it can take a message for everything else. It does not replace a person in a complex or emotional situation, and it should not try to.

How is it different from a telephone answering service?

An answering service hands your calls to people during set hours, at a cost that follows the volume. An agent answers at any hour, takes several calls at once and costs a fixed subscription. Our comparison puts the two side by side.

Does the caller know they are talking to an AI?

Yes. The agent says so at the start of the call. This is an obligation under the EU AI Act for systems that interact with people, and it is what puts callers at ease. The guide to the AI Act and the GDPR explains the framework.

Your number and calls

Do I have to change my number?

No. Your line still rings at your end. Conditional call forwarding sends the calls you don't take to the agent. You keep your current number, whichever you prefer: by forwarding calls to your agent or, in France, by porting, on all plans. A new number is also included from the start of the trial, if you would rather start from scratch.

What is conditional call forwarding?

A setting on your line that sends the call to another number only if you don't answer, if you are already on the phone or if your mobile can't be reached. It is set up with a code dialled on the keypad, in a minute. The how-to guide gives the codes for French operators.

Can I keep my number if I hand everything over to the agent?

Yes, either way: by call forwarding, keeping your operator, or, in France, by porting, transferring your number to the agent's operator with your RIO code, obtained by calling 3179. At Sayelo, forwarding is possible on all plans, as is porting in France, and the Sayelo team takes care of the porting within a few working days. The number porting guide describes the process.

Does the agent take several calls at once?

Yes, depending on the plan. This is one of the major differences from a traditional line, which gives an engaged tone as soon as you are on a call. Check the number of simultaneous calls on each plan.

Can it transfer a call to my mobile?

Yes, when a rule provides for it: an emergency, a keyword, a priority customer, an explicit request. You set these rules in the business profile. The transfer is direct, with no announcement: if you don't pick up, the caller reaches your voicemail. So provide a number that answers, or an up-to-date voicemail.

Does it call my customers for me?

No. The AI agent handles incoming calls: it does not make sales calls or run outbound call campaigns, which are a different service, with different rules. At Sayelo, you are the one who can call your customers, from your computer or your phone, with your agent's number, once outbound calls are activated (only in France for now, coming soon in your country). You do the talking, and the call is neither recorded nor transcribed. Your customers see the agent's number: if they call back, the agent answers.

Calendar and actions

Which calendars are connected?

At Sayelo: Google Calendar, Microsoft 365 and Cal.com. Other calendars and business software are looked at on request. The agent reads availability in real time and writes the appointment directly.

Does it follow my appointment rules?

Yes, if you give them to it: length by appointment reason, open slots, minimum notice, buffer time, daily cap. The appointment booking guide lists what to write.

Does it send a confirmation?

Yes, by SMS to the caller, with the date, time, address and your instructions. And for every call, you receive an email summary.

What does it do for a restaurant or a hotel?

It takes the booking or the order and passes it on to the manager, in the calendar and in the email summary. Point-of-sale and hotel management systems are looked at on request.

Can it give out my prices?

Only the ones you have given it. It does not make up prices or lead times. For a quote, it gathers the information and leaves the pricing to you.

Limits

What happens when it doesn't understand?

It asks the caller to repeat, rephrases, and if that doesn't work, takes their details and the reason for the call so that you can call back, or transfers the call if you have set that up. The summary tells you what happened.

Does it understand accents, background noise and unusual names?

Generally yes for accents, with limits in very noisy environments. Names, numbers and addresses are confirmed by having the caller repeat or spell them. The technical guide explains how.

Does it speak other languages?

By default, your agent speaks your country's language. At Sayelo, nearly 100 languages are included in every plan at no extra cost; the agent detects the caller's language and continues in it if that option is switched on.

Can it handle a medical emergency?

No, and it must not. It applies a simple rule: for a life-threatening emergency, call the emergency services; for an emergency for the practice, a reserved slot or a transfer to the practitioner, according to your instructions. Never any medical advice.

An unhappy customer, a cold caller, a prank call?

It stays polite, listens, takes notes and commits to nothing. A cold caller is recognised by what they ask for and invited to write in. A prank call gets a short answer and the call ends. Everything appears in the summary.

Data

Where is my data hosted?

It depends on the provider, and on every component in its chain. At Sayelo, data is hosted in France by a host certified for health data, and the data processing agreement describes the service providers used.

Are calls recorded?

Not necessarily. The agent works from the transcript to produce the summary. Audio recording is a choice, subject to data protection rules (in France, those of the CNIL, the French data protection authority): informing callers, the right to object, limited retention. If you don't need it, don't switch it on.

Are my conversations used to train an AI?

Not at Sayelo. Your data is used only to run your agent. It is never used to train AI models. With another provider, check for this clause in the contract.

What do I need to put on my website?

An information page about how calls are processed: purpose, provider, hosting, retention period, rights and contact. The GDPR guide gives the checklist.

Price

How much does it cost?

At Sayelo, the entry price is €39 excl. VAT a month, with the number, SMS, calendars and summary included, with no commitment. The pricing page details each plan, and the pricing guide explains how to compare with other solutions.

What happens when the minutes run out?

It depends on the plan: automatic billing of overage, an automatic move to the next plan up, or a top-up on your initiative. At Sayelo, there is no automatic overage: you add a top-up if you wish.

Is there a trial?

Yes, 14 days, on your own business, with a number included. The three-minute demo, for its part, is free and needs no bank card.

How do I know if it will pay for itself?

Measure your missed calls for two weeks, and compare what they cost you with the price of a plan. The guide to the cost of a missed call gives the method, and the calculator does the maths with your figures.

By industry

Is it suitable for my trade?

We have written a page for each trade, with a call scenario: plumbers, dentists, lawyers, and dozens more on the industries hub. If yours is not there, the business profile is free-form: the agent adapts.

Further reading

More guides.

📘

AI receptionist: the complete guide

A voice agent that answers for you, books the appointment in your calendar and sends you the summary: what an AI receptionist really covers, what it can do, what it costs and how to set one up without getting it wrong.

📄

AI voice agents: how they work

Between the moment the caller says “hello” and the moment you receive the summary, five building blocks work one after another, several times a second. Here is what they do, why latency and safeguards matter more than the voice, and what you should ask a provider.

📄

The price of a phone answering service in 2026 (France)

Per call, flat rate, per minute or per line item: phone answering services aren't all billed the same way, and the advertised price rarely tells you what you'll pay. Here is how to read an offer, item by item, and compare it with another. Guide in French, prices in France.

All guides →

Frequently asked questions

In plain terms.

Where should I start if I'm still unsure?

With a three-minute demo, free and with no bank card needed: the agent calls you back and plays the receptionist for your trade. In a single conversation, you will know whether the voice, the pace and the answers suit you. Only then, the trial on your own business.

How long does it take to have an agent that answers well?

Technical activation takes a few minutes. An agent that answers well needs a concrete business profile and a first week of real calls, with the summaries read and the instructions corrected. Allow a week to feel comfortable.

Can I stop whenever I want?

At Sayelo, yes. There is no fixed-term commitment: you can cancel at any time, with 30 days' notice. And you switch off call forwarding in thirty seconds to go back to how you worked before. Check this point with any provider before signing.

Where can I find more detailed answers?

The complete guide to AI receptionists covers the subject from start to finish; the topic guides go into detail on call forwarding, number porting (in France), pricing, regulations and how the technology works; and the industry pages show a call scenario for each type of business.

Hear the agent answer
calls in your trade.

Three minutes, free, no card needed: the agent calls you and plays the switchboard for your type of business. Then a 14-day trial on your own number.