In a Yealink I can setup a Record DSS key. It works. But which command do I need to sent to 3CX. So I can add this button in my BLF template. After a reprovision I need to set this key manually. Thanks.
I can't remember the command in the Template, but for these kind of things you could have a look in the Yealink Admin manual to get all the BLF-related command syntax.