01 Use case

24/7 AI Call Answering

A voice AI agent that picks up every call, day and night, at peak or out of hours, with no extra staff. It qualifies the caller and books the follow-up. At Bonnie&Car, missed calls fell from 55% to about 0%.

01 In short

What is 24/7 AI call answering?

24/7 AI call answering means a voice AI agent picks up every call to your number, at peak times or out of hours, the way a receptionist would: it greets the caller, answers, records what they need, then books a slot or passes the call to a person.

It runs on your existing number, in the language of the caller, and gives you the outcome of each call as data: a summary, a transcript, the recording and the fields you defined.

  • ~0%missed calls at Bonnie&Car, down from 55%
  • 50%of calls qualified automatically, with no one involved
  • 4/5average rating from callers, on more than 300 calls surveyed

Updated 30 September 2026

02 What it does

What the agent does on each call.

  • Answers around the clock: it is on by default, and you can set opening hours per agent.
  • Recognizes returning callers: it remembers the summaries of their last five calls.
  • Collects what you need as structured fields (text, number, yes or no, choice) and sends it to Slack, by SMS, by webhook or through the API.
  • Books the follow-up in your Google Calendar, or transfers the call to a phone number, cold or warm.
  • Speaks French, English, Spanish, Dutch and Portuguese.
  • Keeps your number: it plugs onto your current line through a SIP trunk or a Twilio number.
03 Where it fits

Three situations where it pays.

SituationWhat the agent does
PeaksTakes the calls your team cannot: point your telephony's no-answer forwarding to the agent, or send the whole number to it.
Out of hoursAnswers nights, weekends and holidays, and sends each call's summary to Slack, by SMS or by webhook for the morning.
A small teamCovers the line of a team too small to staff it, without hiring.
04 Missed calls

What a missed call costs.

Bonnie&Car, a used-car marketplace, saw 55% of its inbound calls go unanswered. With a CallShift agent, missed calls fell to about 0%, half of the calls were qualified with no one involved, business hours grew by 50% and revenue rose 15%, with no one hired.

Read the Bonnie&Car case · Estimate what missed calls cost you

05 Go live

From your number to your first call.

A template is ready at once; a custom agent goes live in about a month on average.

  1. Pick the setup. Start from a template, or describe your call flows to an engineer, who maps them with you.
  2. Connect your number. Keep your current number, with a SIP trunk or Twilio.
  3. Test it. Talk to your agent from the browser, or have it call your phone.
  4. Review the calls. Every call leaves a recording, a transcript, a summary and your fields: read them, adjust the prompt, repeat.
06 Questions

24/7 AI call answering, answered.

Is 24/7 AI call answering the same as an AI receptionist?

Yes, it is the same idea under two names: a voice AI agent that answers the phone for you, day and night, and books or routes what it hears.

Does the agent answer when my team is busy?

It answers the calls that reach it. Either the number rings the agent directly, or your telephony sends the calls nobody picks up to it.

What if the caller needs a person?

The agent transfers the call to any phone number you set, cold or warm, and the summary reaches your team afterwards.

Will callers know they are talking to an AI?

You write the opening line of your agent, and it should say so: the EU AI Act requires people to be told they are talking to an AI.

Which languages does it answer in?

French, English, Spanish, Dutch and Portuguese, one language per agent.

How much does it cost?

Starter is €40 a month with 100 minutes included, then €0.50 per extra minute. See the pricing.

Still have questions?

Contact us

Contact
Next step

See it on your own calls.

Book a call with a voice AI engineer: we start from your real call flows and show you the agent, the architecture and the numbers that fit them.

1:1with a voice AI engineer, no slides
2architectures we ship in production: speech-to-speech and pipelines
1rollout plan to leave with: volume, pricing, telephony

~0% missed calls at Bonnie&Car, down from 55%. Read the case study