How to Set Up an AI Phone Assistant: A Step-by-Step Guide
From sign-up to your first answered call: how an AI phone assistant works and how you set it up yourself in minutes - with no technical know-how.
Updated on 7 July 2026
In short
You set up an AI phone assistant in minutes: create an account, forward or port your existing number, set the greeting and languages, link your calendar for live booking and define your routing rules. Then you test with real calls and go live. With CallAssistant it is free with 30 minutes and needs no technical know-how (as of 2026).
How an AI phone assistant works
An AI phone assistant answers incoming calls in natural speech, understands the request and acts on it - booking appointments, capturing leads or transferring urgent cases. It does not replace people; it catches the calls that would otherwise hit a busy tone or voicemail.
- Answer: it picks up around the clock, even on several calls at once - no busy tone, no queue.
- Understand: it recognises the caller's request via speech recognition and replies in the right national language.
- Act: book an appointment, take a callback, answer a question or transfer to a person by your rules.
- Summarise: after the call you get a structured note with the name, the request and the next step.
Set up in 5 steps
Setup is deliberately lean and runs in the browser - no installation and no technician. The overview below shows every step and the realistic time it takes.
| Step | What happens | Time |
|---|---|---|
| 1. Create account | Sign up free, no credit card needed | 1 minute |
| 2. Connect number | Forward or port your existing phone number | 5-10 minutes |
| 3. Set up assistant | Define greeting, languages and questions | 10-15 minutes |
| 4. Link calendar | Enable live booking straight into your calendar | 5 minutes |
| 5. Test and go live | Check with real calls, then switch on | a few minutes |
In total, most SMBs are ready in under half an hour. The most time-consuming part is not the tech but deciding which questions the assistant should ask and when it should transfer.
Connect your phone number
You keep your existing number - your customers notice nothing about the switch. Two routes get you there:
- Forwarding: route calls to the assistant fully, or only outside business hours. Fastest to set up and reversible any time.
- Porting: move the number over to the provider entirely. A little more lead time, but everything runs in one place.
- New number: optionally get an additional Swiss number, for a new branch or campaign.
For the start, forwarding is enough. That way you test the assistant risk-free and keep full control of your number.
Link your calendar and tools
The biggest benefit comes when the assistant books appointments live into your calendar instead of just taking a callback. Linking is a one-off step:
- Connect calendar: the assistant sees free slots and books directly - including confirmation and reminder, which lowers no-shows.
- Set rules: define appointment length, buffers and bookable hours so no double-bookings happen.
- Define handover: certain requests are transferred by rule to the right person or team.
- Notifications: you get every call summary by email or in the dashboard, without missing a thing.
Set languages and call routing
Swiss callers speak German, French, Italian or English - the assistant recognises the language in the same call and replies accordingly. You choose which languages are active and how the greeting sounds. For triage you define simple rules: urgent cases straight to a person, appointment requests straight into the calendar, everything else as a structured note. That keeps the human touch exactly where it counts.
Test, then go live
Before you switch on, call your assistant yourself. Play through the typical requests - appointment, follow-up question, urgent case - and refine the greeting and questions until it feels right. That is exactly what the free plan with 30 minutes is for: you get the value before you buy and only go live once you are convinced. Paid plans start from CHF 76 per month billed yearly and are cancellable monthly.
Takeaway: ready today
Setting up an AI phone assistant is not an IT project but a matter of minutes: account, number, calendar, languages, test. Start free, run a few real calls through it and go live once it fits. From then on your business misses no call - day or night.
Frequently asked questions
Usually under half an hour. Account and call forwarding take minutes; the longest part is defining the greeting, questions and routing rules. With the free plan you test before going live.
No. Setup runs in the browser with no installation. You follow guided steps for the number, calendar and languages. If you can forward a phone number, you can set up an AI phone assistant.
Yes. You forward your existing number or port it to the provider. Your customers dial the same number as before and notice nothing about the switch.
Only if you want the assistant to book appointments live - which delivers the biggest benefit. Without linking, it instead notes callbacks and requests as a structured summary.
Yes. With CallAssistant you test using 30 free minutes a month and real calls, no credit card. You refine the greeting and rules and only go live once everything fits.
CallAssistant is available from CHF 76 per month billed yearly, cancellable monthly. For the detail and a cost comparison, see our guide to the cost of an AI phone assistant.
Related glossary terms
Go deeper on individual points in our AI telephony glossary.
