Following up on missed calls while everyone is at the machine
At bytebrise, following up on missed calls means this: if nobody answers, the call lands on your callback list with the number and time. Anyone calling from a mobile who explicitly asks for a callback confirmation by text gets a brief, factual text a moment later, confirming the callback and asking what it is about. Their reply also lands on the list. We set this up for trade businesses and small businesses in Upper Bavaria, from Fürstenfeldbruck.
bytebrise GO is new in our offering and runs in our own business. The example on this page comes from Martin’s made-up joinery.
Why the call gets lost at the saw
In the trades, the phone rings while everyone is at the machine, up the scaffolding or at a customer’s. Anyone who cannot get through may try again later, or they may simply call the next business in the search results.
Voicemail only solves half the problem. You hear the callers who leave a message. Anyone who hangs up remains a number in the call log, with no name and no reason for calling, and by the evening nobody knows which callback was urgent.
How often this happens to you is shown by the call log of your phone system or your mobile. For two weeks, count the missed calls that nobody returned. We do the maths with that number in our first conversation.
Why being reachable starts on the website
Before a call can be missed, it has to happen. In our sample of 43 Bavarian trade businesses, 30 percent had not set up their phone number as a clickable link (Tradesperson website study, August 2026). On a smartphone, tapping the number then does not start a call.
The sample is not representative. But the gap can be closed quickly on an existing website. If you want to know beforehand how your site is doing, use the free website check for tradespeople (in German).
How “Following up on missed calls” works
Once phone and text messaging are connected, the workflow reacts to the missed call: it adds the call to the callback list. Anyone who asks for a text gets one with your wording, and the workflow collects the reply. You make the callback.
| Step | What happens | Who acts |
|---|---|---|
| 1 Call missed | A call is not answered. Your phone system reports it to the workflow, and a short announcement offers: “Callback confirmation by text: press 1”. | automatic |
| 2 Check | Did the caller explicitly choose the text? Is it a mobile number? Has this number already received a text today? Is it on the block list? | automatic |
| 3 Text on request | Only if explicitly requested does the text go out with the wording you approved beforehand, with a different callback window depending on the time of day. | automatic |
| 4 Callback list | The number, the time and, if a text was requested, the caller’s reply land on your callback list. | automatic |
| 5 Callback | You call back when you have time and tick it off. | You |
The workflow recognises mobile numbers by their prefix. Landline numbers, withheld numbers and callers who do not want a text get no text, but they are still on the list with the time, landline number included.
Example: the 10:15 call at Martin’s joinery
This is how it could go at Martin’s joinery. The business and the caller are made up.
| Time | What happens |
|---|---|
| 10:15 | Call from a mobile number, not answered. Everyone is in the workshop. In the announcement, the caller chooses “callback confirmation by text”. |
| 10:15 | The requested text goes out: “This is Martin’s joinery. We are at the machine right now and will call you back by noon. What is it about?” |
| 10:19 | Caller’s reply: “Kitchen front has a crack, need a replacement.” |
| 10:19 | Entered: number, reason for the call and the promise of a callback by noon. |
| 11:40 | The master craftsman calls back and already knows what it is about. |
What the text says and what it does not
The text only goes to callers who explicitly ask for it. It names your business, says by when you will call back and asks what the call is about. It contains no advertising, no link and no offer, and the same number gets at most one text per day.
About the sender: so that the caller can reply, the text comes from a number that can receive replies. That is not possible with a company name as the sender, which is why the text names your business right at the start.
If someone replies that they do not want texts, their number goes on a block list and gets no more texts. The list still keeps the call itself, because it was real.
Sample wording that you adapt and approve before the start:
| Time | Wording |
|---|---|
| Weekday, during the day | This is Martin’s joinery. We are at the machine right now and will call you back by noon. What is it about? |
| Weekday, after closing time | This is Martin’s joinery. We are back in the workshop from 7 am and will call you back tomorrow morning. What is it about? |
| Weekend | This is Martin’s joinery. The workshop is closed at the weekend. We will call you back on Monday by 10 am. What is it about? |
Callback texts and the law: what to clarify before the start
We do not send texts unsolicited. The caller explicitly chooses one, for example in the announcement, or a channel they used earlier has documented consent. The message remains a factual confirmation without advertising. Whether the workflow is legally suitable for your business still depends on the individual case and cannot be settled for you.
§ 7 UWG (German Act against Unfair Competition) governs unreasonable nuisances, which include advertising by electronic mail without prior express consent. Because the text only goes out at the caller’s explicit request and contains no advertising, it remains a confirmation. Whether that is enough in your case is something to clarify legally before the workflow starts.
Also needed before the start:
- Phone numbers and reasons for calling are personal data. The text messaging service and we need a data processing agreement under Art. 28 GDPR, and the callback list gets a deletion period.
- The workflow does not record calls and does not listen in. Recording without the other party’s consent is not permitted; the confidentiality of the spoken word is protected by § 201 StGB (German Criminal Code).
- In medical, dental and physiotherapy practices, the text does not ask what the call is about, so that no health information goes back and forth by text. There it only confirms that the practice will call back.
Callback text, AI phone assistant or answering machine: what suits which business?
The callback text does not answer a call; it turns a missed call into an entry on your callback list. An AI phone assistant picks up itself and talks to the caller; an answering machine waits until someone leaves a message. If you prefer to call back yourself, the callback text serves you well; if you want someone to always pick up, an AI phone assistant is the better choice.
What is a callback text? A short text message to callers whose call nobody answered and who explicitly ask for it, with a promise to call back and a question about what the call is about. The practice is also known as “missed call text back”.
| Feature | Answering machine or voicemail | AI phone assistant as a ready-made tool | Callback text as a set-up workflow |
|---|---|---|---|
| What the caller experiences | An announcement, then they can leave a message | An AI voice answers and asks what the call is about, and depending on the tool also about an appointment | The phone rings out; anyone who wants to chooses “callback confirmation by text” and shortly afterwards gets a text promising a callback |
| What you get | Voice messages from everyone who leaves one | a summary of every conversation | Number, time and reason for the call as an entry for your callback |
| What to watch out for | Anyone who hangs up only leaves a number | Notice about the automated assistant, handling of transcripts and recordings | Texts only at the caller’s request and only to mobile numbers; clarify admissibility case by case |
| Cost | often included in the phone tariff | for example IONOS KI Telefonassistent from €39 per month including VAT with 30 calls, fonio from €99 per month excluding VAT with annual payment, according to the providers’ pricing pages (in German), retrieved on 25 September 2026 | bytebrise GO from €79 per month depending on team size, plus a one-off €490 setup |
An AI phone assistant raises two points to clarify beforehand. Article 50 of the EU AI Act requires that people are informed when they interact directly with an AI system. On the phone, that means callers learn that they are talking to an automated assistant. And anyone who records calls needs the caller’s consent to do so.
Which approach suits which business:
- You want someone to always answer immediately and you get many predictable calls such as appointment requests: then a ready-made AI phone assistant is often the quicker route, and you do not need us for that.
- You prefer to call back yourself, because the phone call is where you find out whether a job is worth taking, and you just want no caller to vanish without a trace: then the callback text is the right choice.
- You get few calls and have time for the call log in the evening: then voicemail is enough.
Which number and which phone system
The workflow needs a phone system or telephone service that reports missed calls. Whether and how your system can do that, we check before you pay anything. We can only promise it after that.
- Your existing number, the one customers know, stays the same. If your system cannot do that, we will tell you beforehand.
- The text comes from a separate number that can receive replies.
- Which of your lines is connected, office or mobile, we decide together after checking what is possible.
What you approve once
During setup you decide what the text says and where the callback list goes. In everyday use you just call back.
- the text wording for weekdays, after closing time and weekends
- your callback windows
- where the callback list lives: as an email to you, in a shared list or in your customer software, if it has an interface
- who in the business works through the list
- after how many days completed entries are deleted
Requirements
You need a phone system or telephone service that reports missed calls, approved text wording and someone who works through the callback list. You also need to clarify the legal side of the texts for your business.
- a phone system or telephone service that reports missed calls; we check this with you
- a separate number for the texts; we set that up
- a data processing agreement
- in the first few weeks, brief feedback whenever a text was missing or off the mark
How do businesses in Munich and Upper Bavaria follow up on missed calls?
With bytebrise GO, a missed call becomes an entry on your callback list. If the caller explicitly asks for a callback confirmation by text, one is ready for you to approve with one tap. Without that request, no text goes out. bytebrise GO is not an AI phone assistant: it does not talk to callers itself, you make the callback. Whether your phone system reports missed calls is something we check with you beforehand.
What does the “Following up on missed calls” workflow cost?
The “Following up on missed calls” workflow runs in bytebrise GO. GO costs €79 per month for one person, €149 for teams of up to five and €399 for businesses of up to 20 people, on request for more than 20. Setup costs a one-off €490, after which GO can be cancelled monthly. Which channels and workflows we set up is agreed before the contract starts. The initial consultation is free.
Whether text message fees are included in the monthly price or billed by usage is stated in your quote before you commit.
All prices are final prices. Under § 19 UStG (the German small-business rule) no VAT is charged. All tiers are on the pricing page.
More about GO: bytebrise GO: automate inquiries, callbacks and appointments. If your business needs a workflow that GO does not cover, we build it as a custom build with its own price.
Frequently asked questions
Is this an AI phone assistant?
No, deliberately not. The workflow does not answer any calls and does not talk to anyone. It puts every missed call on the callback list and sends a text with your wording only to callers who explicitly ask for it. If you want someone to always pick up, an AI phone assistant is the better fit.
Does this work with my landline number?
Your own number can be a landline number if your phone system reports missed calls. We check that with you. Only callers with a mobile number who explicitly ask for it get a text. Anyone who calls from a landline or does not choose the text ends up on the callback list without a text.
Does every caller get a text?
No. A text only goes to callers who explicitly ask for it, for example by choosing “callback confirmation by text” in the announcement, or via a channel the caller has used themselves. The text is a factual confirmation without advertising. Whether the workflow fits your case is something to clarify legally before it starts.
What does a text message cost?
The fees depend on the text messaging service. Whether they are included in the monthly price of bytebrise GO or billed by usage is stated in your quote.
What happens at the weekend and after closing time?
Then the workflow sends a different text, for example with a callback on Monday by 10 am. You set the times.
What happens if the caller does not reply?
Then it stays at the one confirmation. The number and time are still on your list, and you decide whether to call back.
Are calls recorded?
No. The workflow does not listen in and records nothing. It only learns that a call was not answered, and from which number.
Does this also work for practices?
Yes, with one restriction: there, the text (if the caller asks for it) does not ask what the call is about, so that no health information is sent by text. It only confirms that the practice will call back.
Free initial consultation
Tell us in 20 minutes how many calls go unanswered at your business and how your phone system is set up. We will tell you whether this workflow fits or whether a ready-made tool is the better route for you. We can talk by phone or at our office in Fürstenfeldbruck, and we will get back to you within one business day.
Prefer to reach us directly? Phone +49 8141 5098988, email hello@bytebrise.com, Balduin-Helm-Straße 71b, 82256 Fürstenfeldbruck.