GBX20 - Why does every extension disappear when the extension fo the attached phone is in use?



whenever I use my phone, all the extensions on it disappear. Why is that? Is this a bug? Can it be changed?


Probably wrong configuration.
You have VPK and extension board.
VPK will replace extension (first selection)


How can I fix it?


Upgrade firmware to latest at start.
Then attach some screenshots or something as i’m not sure what you see.