I’m in Australia but have a 2016 500X Lounge and have just tested the voice commands in my car. You are quite correct that the green telephone icon is only for answering calls. To make a call hit the voice command button on the left hand side of the steering wheel and when prompted say “Go to phone”. Then you can say “Dial a Number” or “Call a name” if the name of the person is listed in your phone directory. Say “Help” or “List Commands” for more help. Good luck!