How can I link to telephone numbers? - If I insert a link like "tel:+12345" a "http://" is automatically added.

Test

Reference:
https://developers.google.com/web/fundamentals/native-hardware/click-to-call/

On 12/2/2017 at 10:42 AM, Markus Jung said:

How can I link to telephone numbers? - If I insert a link like "tel:+12345" a "http://" is automatically added.

You can't with that link button. Instead, do manual HTML inside the editor (if you've permission to see the RAW HTML editor inside the toolbar).

This will be the example of it:

<a href="tel:+12345">Call John Doe</a>

The other option is to create a new button inside the toolbar through ACP -> Customization -> Editor -> Toolbars.