Assignment of token to PTT communications

A PTT communication system comprising:

• a plurality of terminals connected to a network and having respective PTT buttons for obtaining a token for PTT communications;
• an interphone connected to said network and installed in a predetermined location;
• and
• a PTT communication server connected to said network, for controlling a token for PTT communications;
• said PTT communication server comprising:
• terminal state monitoring means for monitoring pressed states of the PTT buttons of the respective terminals;
• token control means for assigning a token to one of the terminals whose PTT button is pressed and sending communication data transmitted from the terminal whose PTT button is pressed through said network, to another one of the terminals through said network, when the PTT button of said one of the terminals is pressed, and for assigning a token to said interphone and sending communication data transmitted from said interphone through said network to said terminals through said network, when the PTT button of any one of said terminals is not pressed.

A method of performing PTT communications in an PTT communication system having a plurality of terminals connected to a network and having respective PTT buttons for obtaining a token for PTT communications, a management server connected to said network, for managing advertisements or contents, and a PTT communication server connected to said network, for controlling a token for PTT communications, comprising the steps of:

• (a) indicating the pressed state of the PTT button of each of said terminals from each of said terminals through said network to said PTT communication server;
• (b) assigning a token from said PTT communication server to said management server when the PTT button of any one of said terminals is not pressed;
• (c) selecting advertisements or contents with said management server to which the token is assigned, and sending the selected advertisements or contents from said management server to said PTT communication server through said network;
• and
• (d) distributing the advertisements or contents selected by said management server to which the token is assigned, from said PTT communication server through said network to said terminals.

A method of performing PTT communications in an PTT communication system having a plurality of terminals connected to a network and having respective PTT buttons for obtaining a token for PTT communications, an interphone connected to said network and installed in a predetermined location, and a PTT communication server connected to said network, for controlling a token for PTT communications, comprising the steps of:

• (a) indicating the pressed state of the PTT button of each of said terminals from each of said terminals through said network to said PTT communication server;
• (b) assigning a token from said PTT communication server to said interphone when the PTT button of any one of said terminals is not pressed;
• and
• (c) sending communication data transmitted from said interphone through said network to said terminals through said network when said PTT communication server assigns a token to said interphone.

A PTT communication server for controlling a token for PTT communications, comprising:

• terminal state monitoring means for monitoring pressed states of PTT buttons of respective terminals through a network;
• token control means for assigning a token to one of the terminals whose PTT button is pressed and sending communication data transmitted from the terminal whose PTT button is pressed through said network, to another one of the terminals through said network, when the PTT button of said one of the terminals is pressed, and for assigning a token to a management server connected to the network when the PTT button of any one of said terminals is not pressed;
• and
• distribution control means for distributing advertisements or contents selected by said management server to said terminals through said network when said token control means assigns a token to said management server.