Specialization · AI Integration & Chatbots

AI Phone Assistant: Answer Calls Even When Nobody Can

An AI phone assistant picks up when your team is on the construction site, in treatment or in a customer meeting: it answers standard questions, records requests and appointment wishes, and connects callers to a person when needed. After every call, you receive a summary by email or directly in your CRM.

Initial consultation freeQuote transparent, fixed price if preferredArea AI Integration & Chatbots
Featured image: AI Phone Assistant
Short & clear

An AI phone assistant is a voice dialogue system that answers incoming calls, understands spoken language, responds based on your information, captures appointments or callback requests and forwards calls to employees when needed. For this, Nano Concepts combines telephony via SIP, for example through Twilio, with speech recognition, speech synthesis, a language model and your calendar and CRM; callers are told right at the start that they are speaking with an AI. An assistant with appointment capture and call forwarding typically falls under the Professional package from €8,000; multiple locations or deep system integration are priced individually as an Enterprise project – you will receive your quote after the free initial consultation.

AI phone assistant with Nano Concepts

An AI phone assistant solves a problem many businesses know: the phone rings while the contractor is on a job site, the practice is in the treatment room or every table at the restaurant is taken. Instead of voicemail or a busy signal, an AI answers the call, greets callers on your behalf and says right at the start that an AI assistant is speaking. It answers questions about opening hours, services or directions, takes the caller's name, callback number and request, and suggests free appointments from your calendar. Urgent matters it forwards to a designated phone number.

01

Several building blocks work together technically. The telephony connection is made via SIP or through providers such as Twilio, usually as call forwarding from your existing phone system – for example after several rings, outside business hours or when all lines are busy. Speech recognition converts what is said into text, a language model understands the request and formulates the answer, and speech synthesis delivers it in a natural voice. What the assistant may say, we define together: your information, your appointment rules, your limits. After the call, a summary lands in your inbox, in the ticketing system or in the CRM.

02

Special rules apply on the phone, which is why we build in transparency and data protection from the start. The notice that callers are speaking with an AI is a fixed part of every greeting. Calls are recorded only with consent, as little as possible is stored, and processing takes place with providers that offer an EU option. Which further requirements under GDPR and the EU AI Act apply to your business, please clarify with your legal counsel – our implementation does not replace legal advice. We start with one clear use case, test with real conversation scenarios and improve the assistant based on the summaries.

Story

AI phone assistant in 10 slides

Just swipe through: what AI phone assistant delivers, what we build for you, and how other companies benefit.

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Specialization · AI Integration & Chatbots

AI Phone Assistant. Work that gets itself done.

An AI phone assistant is a voice dialogue system that answers incoming calls, understands spoken language, responds based on your information, captures appointments or callback requests and …

  • Free initial consultation
  • Transparent, fixed price if you like
  • Reply usually within 24 hours
nanoconcepts.de
02 / 10

How you can tell

Does this sound familiar?

Typical signs that AI phone assistant is worth it:

  1. 01Your phone rings while you are on the construction site, with a patient or with a customer …
  2. 02Voicemail fills up with half-finished messages without a name or callback number.
  3. 03Many calls revolve around the same questions about opening hours, appointments or procedures.
  4. 04After closing time, your phone rings into the void, even though that is when many customers …
nanoconcepts.de
03 / 10

Your benefit

What you get out of it.

Reachable Despite Full WorkloadCalls are answered even when your team cannot get to the phone – in the evening, during …
Fewer InterruptionsThe assistant handles standard questions itself, so your team can focus on customers on …
Every Request in Black and WhiteInstead of sticky notes and half-finished voicemail messages, you get a structured summary …
nanoconcepts.de
04 / 10

Scope of services

What we deliver for you.

An AI phone assistant answers calls, handles standard questions, notes appointments and connects callers to …

  1. Conversation Design & Greeting
  2. Telephony Integration
  3. Speech Understanding & Speech Output
  4. Appointments & Callback Requests
  5. Handoff to People
  6. Summary & CRM Handoff
nanoconcepts.de
05 / 10

Use cases

Here's what that looks like in practice.

LogisticsA freight forwarder has calls from drivers and customers about loading times and delivery pre-qualified and hands them …
Healthcare & CareA medical practice has appointment requests, prescription orders and callback requests taken.
Real EstateA property management company takes damage reports from tenants at night as well and immediately forwards urgent cases …
nanoconcepts.de
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In practice

Not just talk. Actually built.

SmartBook Booking ToolCalendly-style appointment booking – right on your website, custom-configured, with automatic reminders.
nanoconcepts.de
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Process

A clear process. No surprises.

  1. 01
    Call AnalysisWe look at who calls when and with what requests, and define what the …
  2. 02
    Conversation Design & RulesWe draft the greeting, AI notice, answers, appointment rules and call …
  3. 03
    Prototype & Test CallsUsing a test number, we play through typical and difficult conversations …
  4. 04
    Integration & Pilot OperationWe connect your phone system, calendar and CRM and start in a fixed time …
nanoconcepts.de
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Common question

Good question. Clear answer.

How much does an AI phone assistant cost?

Nano Concepts

An assistant that answers calls, handles standard questions, takes appointments and forwards calls typically falls under the Professional package from €8,000.

All questions & answers
nanoconcepts.de
09 / 10

Packages

Three packages. One plan.

  • Starterfrom €2,500Ideal for landing pages, simple web applications and prototypes.
  • Professionalfrom €8,000For complex web applications, portals and tailor-made software …
  • EnterpriseCustomFor large projects, system landscapes and long-term development …

Non-binding guidance – you will receive your quote after the free initial consultation. View pricing

nanoconcepts.de
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Let's get started

Unlock your full potential.

Tell us about your project – we usually get back to you within 24 hours with an initial assessment.

TOGETHER. DIGITAL. SUCCESSFUL.

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01 / 10

Typical signs that AI phone assistant is worth it

  • Your phone rings while you are on the construction site, with a patient or with a customer – and the caller then dials the next number on their list.
  • Voicemail fills up with half-finished messages without a name or callback number.
  • Many calls revolve around the same questions about opening hours, appointments or procedures.
  • After closing time, your phone rings into the void, even though that is when many customers have time to call.
  • You lack the budget or applicants for an additional person at the front desk – and the phone is still your most important channel.
Scope of services

What we deliver for you

An AI phone assistant answers calls, handles standard questions, notes appointments and connects callers to your team when needed.

Conversation Design & Greeting

We define the greeting, AI disclosure, tone of voice and typical conversation flows – as well as what the assistant expressly does not answer.

Telephony Integration

Connection via SIP or Twilio to your phone number or phone system, with call-forwarding rules based on time of day, ring duration or workload.

Speech Under­standing & Speech Output

Speech recognition, language model and speech synthesis are tuned for German, including technical terms, place names and your product names.

Appointments & Callback Requests

The assistant checks free slots in your calendar or booking tool, enters appointments or creates a callback request with the reason for the call.

Handoff to People

In urgent cases, at the caller's request or when uncertain, the assistant connects directly to the responsible person or phone number.

Summary & CRM Handoff

After every call, the request, contact details and next steps are available by email, in the ticketing system or as an entry in your CRM.

Your benefits

Why companies choose us

Reachable Despite Full Workload

Calls are answered even when your team cannot get to the phone – in the evening, during lunch break or at peak times.

Fewer Inter­rup­tions

The assistant handles standard questions itself, so your team can focus on customers on site and on requests that truly need a person.

Every Request in Black and White

Instead of sticky notes and half-finished voicemail messages, you get a structured summary with a callback number for every call.

Transparent for Callers

The AI notice at the start and the option to ask for a person at any time build trust instead of frustration.

Use cases

AI phone assistant in your industry

Here's what AI phone assistant looks like in typical industries – concrete examples from everyday business.

Industry & Manu­fac­turing

A machine builder has service calls answered outside office hours: the assistant records machine type, fault and callback number and alerts the on-call service if a machine is down.

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Retail & E-Commerce

A specialty retailer automatically answers questions about opening hours, pickup and repair intake and forwards consultation requests to the sales team.

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Logistics

A freight forwarder has calls from drivers and customers about loading times and delivery pre-qualified and hands them over to dispatch with the order number.

Learn more

Healthcare & Care

A medical practice has appointment requests, prescription orders and callback requests taken. The assistant does not give medical information, and in emergencies it refers callers to the emergency number.

Learn more

Real Estate

A property management company takes damage reports from tenants at night as well and immediately forwards urgent cases such as water damage to the emergency service.

Learn more

Finance & Insurance

An insurance office has callers sorted by request and type of policy and books consultation appointments, without giving out information about contracts over the phone.

Learn more

Services & Consulting

A law firm has new client inquiries taken and initial-consultation appointments scheduled while the attorneys are in meetings; the assistant gives no legal information.

Learn more

Skilled Trades

A skilled-trades business has calls answered while the team is on the construction site: the assistant asks for the job, address and urgency and suggests site-visit appointments.

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Startups

A startup offers phone support for its product without having to build its own hotline early on, and hands complex cases to the team as a ticket.

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Education & Research

A language school answers phone inquiries about courses, placement and enrollment and books consultation appointments directly in the calendar.

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Tourism & Hospitality

A restaurant takes table reservations by phone even at peak times, checks availability in the reservation system and confirms by SMS or email.

Learn more

Media & Creative Industries

A publisher has subscription calls about address changes, vacation holds or cancellations pre-structured and hands them over in full to reader services.

Learn more
Process

How your project works

  1. Call AnalysisWe look at who calls when and with what requests, and define what the assistant takes over and what stays with your team.
  2. Conversation Design & RulesWe draft the greeting, AI notice, answers, appointment rules and call forwarding together with you and have you approve them.
  3. Prototype & Test CallsUsing a test number, we play through typical and difficult conversations, including dialects, background noise and interruptions.
  4. Integration & Pilot OperationWe connect your phone system, calendar and CRM and start in a fixed time window at first, such as outside business hours.
  5. Evaluation & ExpansionBased on the summaries, we improve answers and workflows and expand use step by step.

Technologies & tools

TwilioSIP TrunkingOpenAI Realtime APIWhisperElevenLabsAzure AI SpeechClaudeNode.jsMicrosoft Graph APIGoogle Calendar API
FAQ

Frequently asked questions about AI phone assistant

An assistant that answers calls, handles standard questions, takes appointments and forwards calls typically falls under the Professional package from €8,000. A lean version that only records requests and summarizes them by email can start in the Starter package from €2,500; multiple locations, languages or deep system integration are priced individually as an Enterprise project. Ongoing costs for phone minutes and AI usage depend on call volume and are itemized separately in the quote, which you receive after the free initial consultation.

With us, that is always the case: the assistant introduces itself as an AI assistant at the start. The EU AI Act generally requires that people can tell when they are interacting with an AI system, and transparency also builds trust. Whether further obligations apply to your use, please clarify with your legal counsel – our information does not replace legal advice.

A first assistant for a clearly defined use case is often ready for testing after just a few weeks. The time to regular operation depends on how many conversation types, systems and forwarding rules are added. We plan when the assistant goes live together with you after the call analysis.

For administrative matters such as appointment requests, prescription orders or callback requests, yes. The assistant does not give medical information, refers callers to the emergency number in emergencies, and health data is collected only to the extent necessary and specially protected. We review the connection to your practice software on a case-by-case basis.

Only if you want that and the callers have consented. To create the summary, the conversation is processed during the call; what is stored afterward and for how long, we define with you in a deletion concept. The data protection assessment is handled by your data protection advisor, whom we support with documentation of the data flows.

In most cases yes, either through call forwarding to a dedicated number for the assistant or through a SIP connection to your phone system. You set up forwarding rules based on time of day, ring duration or workload as usual. We clarify which option suits your system in the initial consultation.

Solutions

AI Phone Assistant for your target audience

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05 · Scenario · approx. 50 seconds

No more voicemail

Master electrician Ralf has his hands in the fuse box while his phone rings – five missed calls by noon. An AI phone assistant always answers, understands the request and books the appointment.

ServiceAI phone assistantForTrades & service providers
Read transcript

This is Ralf, master electrician.
Hands in the fuse box.
And the phone rings.
By noon: 5 missed calls.
Voicemail: no name. No number.
That evening, Ralf calls back.
Too late.
The job is gone.
Here’s what’s going wrong.
Missed call = missed job.
NANO CONCEPTS sets up an AI phone assistant.
It picks up. Always.
Understands the caller. Books the appointment.
Same call.
This time someone answers.
Appointment set. In one minute.
Ralf just keeps working.
And never misses a thing.

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