How can the emergency medical alert system tell if an answering machine has answered instead of a person?
When a call is answered, the LifeLink medical alert system plays the outgoing message that you’ve pre-recorded during setup. Per the recommendation in the setup manual, the last part of the message that your record asks the listener to press “0” on their telephone. If a “0” keypress isn’t detected, the emergency system assumes that a live person has not answered. It then hangs up and proceeds with the next number in the sequence.