Abstract: A method, system and Application Server (AS) for distributing Push-To-Talk (PTT) voice and multimedia messages to communities of subscribers, using a definition os PTT groups. First, a PTT group of subscribers is created in the AS, either by one of the members or by a content provider server. Then, the subscribers register their interest in receiving PTT messages related to the created group, for example by joining a Session Initiation Protocol (SIP) related to that group. Finally, the content provider server sends a PTT message destined to the PTT group, the message comprising voice and/or multimedia information, such as for example news, stock quotes, sport updates, weather or commercial information. The message is received by the AS, which distributes it to the registered subscribers of the PTT group using its definition of the PTT group.