If you’ve tried to add a “tel:” reference to your Adaptive Form anywhere a link reference can be added, you may notice a link error while in author mode and a plain number without a reference in Preview mode.
To be able to make use of the “tel” reference you need to add an entry to the Day CQ Link Checker Service.
Go to the Adobe Experience Manager Web Console
Configuration via: http://localhost:4502/system/console/configMgr
Find the Day CQ Link Checker Service:
In the “Special Link Prefixes” section, add a new entry with “tel:”.
Once added, your tel reference should be active when previewed and your browser should be attempting to open your default VOIP application.