We never received a response from BTL when we requested the ability to make emergency calls/text to a prescribed list. I called, I wrote, I followed up - nothing.
The idea was to be able to send one message to a group, at the same time. This would work for emergencies or for when school is cancelled etc.
It's a shame - it is a great system and I can't see how it would be too difficult to set up.
AND we would pay for the service.