Hello,

unfortunately after a re-installation of my doorphone together with my entrance door the relay don't switch via the DTMF signal.

I checked following:
- DTMF code under "Intercom - Relay - 1/2/3"
- entry at the VBELL App and enabled DTMF opening
- Relay switch via http command

Do you have any further hint for me?

Firmware Version 27.30.5.1
Hardware Version 27.0.0.1.0.0.0.0

thanks in advance
wu3mi

Hello,
after some investigations i solved this issue.
The caller must be in the phonebook.

Enter the callernumber and everything is fine ...

wu3mi wrote:Hello,
after some investigations i solved this issue.
The caller must be in the phonebook.

Enter the callernumber and everything is fine ...

Or disable the DTMF whitelist (in Intercom > Relay settings).

It's obviously somewhat of a security risk if any phone extension can open it, but it all depends on in your environment. If you have many phones (and/or constantly adding more) it'd be difficult to add each of them to the phone book.