Push to talk (PTT) is a two-way radio service that provides direct voice communication. You can use PTT for easy communication on the move, one-to-one, or in a group. In push to talk communication, one person talks while the others listen from the built-in loudspeaker.
If you make a one-to-one call and do not get a response, you can send a request for the person to call you back. To send a callback request from PTT contacts, scroll to a contact, and select Options > Send callback request.
When someone sends you a callback request, 1 new callback request is displayed in the standby mode. When you receive a callback request from someone who is not in your contacts list, you can save the name to your contacts.
To call a group, select Options > PTT contacts, mark the contacts you want to call, and select Options > Make PTT group call.