It happened to me as well. Thankfully the customer didn't see it working as a voice announce button but as a ring button. It would have been another thing to explain to the customer about why it worked, but now it doesn't. Don't get me wrong, I want the customer to get the best service I can provide, but I was hired by another company to install this system in a timely manner. I originally asked why they install these in Basic mode. I believe the answer was money.
----- "Always be yourself. Unless you can be Batman, always be Batman"-------