In short
- An AI receptionist suits clearly defined requests: answering calls, answering questions, taking appointment and call-back requests, and passing on urgent matters.
- It needs a fixed handover to people, access to calendars and customer data with minimal rights, and answers drawn only from checked content.
- Since 2 August 2026, people must be able to recognise that they are talking to an AI, unless this is obvious. Marketing calls made by automated calling systems need prior consent under EU law.
- The best start is incoming calls outside office hours, not the whole phone system at once.
What an AI receptionist is suited for
On the phone, reliability counts for more than sophistication. An assistant works well where requests recur and the outcome is clear.
- Answer and sort calls: Who is calling, what is it about, how urgent is it? The result lands as a short summary in your inbox or ticket system.
- Answer common questions: opening hours, directions, services, process. The answers come from your checked content.
- Book appointments: the assistant reads free slots from the calendar, books according to your rules and confirms by text message or email.
- Prepare call-backs: name, number, request and preferred time are recorded. The team calls back with all the information.
- Pass on urgent matters: on keywords such as burst pipe or heating failure, the call goes straight to the on-call person.
Binding commitments on prices, deadlines or goodwill, complaints and anything that needs advice stay with people. This applies above all to practices, law firms and businesses with liability questions. How we set up AI customer care, starting with chat and email and adding the phone on request, is described on the service page.
How it works technically
Four building blocks work behind a call. Modern language models can process audio directly, keep track of the conversation and call tools. The tasks stay the same nonetheless.
| Building block | Task | What to watch |
|---|---|---|
| Telephone connection | Takes calls on your number, via call forwarding or your phone system | The number stays with you. Forward, for example, only outside office hours or when the line is busy |
| Understanding and speaking | Converts speech to text and back, or processes audio directly | Test dialects, names and technical terms in advance, allow interruptions |
| Language model with knowledge base | Understands the request and answers from your content | Checked content only, clear limits, no invented answers |
| Interfaces | Calendar, customer data, ticket system, SMS | Minimal rights and a log of every action |
Delays between question and answer are noticeable on the phone straight away. So test with real calls, with dialect, background noise and interruptions, not only with clean recordings.
Obligations and law in the EU
- AI disclosure: Under Art. 50 of the AI Act, AI systems that talk directly to people must be designed so that people recognise they are dealing with an AI, unless this is obvious. The information belongs at the start of the first contact at the latest. One sentence is enough: “You are speaking with the digital assistant of …”. More on the transparency obligation.
- Data protection: Call data is personal data. You need a legal basis (Art. 6 GDPR), must inform callers (Art. 13 GDPR) and must sign a data processing agreement with the provider (Art. 28 GDPR). Say at the start who is speaking and where the privacy information can be found.
- Recording: Unauthorised sound recordings of non-public spoken words are a criminal offence in Germany (§ 201 StGB) and Austria (§ 120 StGB). The safe route: an announcement at the start, and store only what you need, such as the summary instead of the audio.
- Outgoing calls: Under Art. 13 of the ePrivacy Directive, marketing calls made by automated calling systems without human intervention are only allowed with the subscribers’ prior consent. This protection applies directly to natural persons; for businesses, national law decides.
This overview is general information, not legal advice. Check your individual case with your data protection officer or lawyer.
How to introduce an AI receptionist
- Analyse your calls: How many calls arrive outside office hours or go unanswered? What are the most frequent ones about?
- Keep the task narrow: For example only calls after closing time and at lunchtime, with appointment and call-back requests.
- Define the handover: Who is reached, when and how? What happens if nobody picks up?
- Write texts and rules: a greeting with the AI disclosure, answers to the ten most frequent questions, a sentence for “I don’t know, I will pass you on”.
- Test with real calls: colleagues call in, with dialect, background noise and interruptions.
- Start small and evaluate: first a few weeks alongside the voicemail. Measure how many requests were solved, handed over or abandoned.
Sources
- Regulation (EU) 2024/1689 on artificial intelligence, Art. 50: EUR-Lex
- Regulation (EU) 2016/679 (General Data Protection Regulation), Art. 6, 13 and 28: EUR-Lex
- Directive 2002/58/EC on privacy and electronic communications, Art. 13: EUR-Lex
- Germany: § 201 StGB, Austria: § 120 StGB
- OpenAI: Realtime API, voice agents