Abstract: Provided is a communication terminal which can be connected to a plurality of types of network and switching to a network appropriate for a content to be handled can be performed without forcing a user to perform the switching to a connection destination. It is also possible to provide a communication method using the communication terminal, a program, and a recording medium. The communication terminal transmits a content transmission request to an external server and receives a response to the content transmission request from the external server. The communication terminal extracts content information from the received response, selects at least one network in accordance with the extracted content information, and makes a connection to the selected network.

Abstract: A PoC communication system suitable for a broadcast use or the like is provided. In a communication system including a PoC server 30 and terminals 10 and terminals MS1 to MSn connectable to the PoC server 30, the PoC server 30 classifies the terminals into a terminal of first kind 10 having authority to assign a transmission right and terminals of second kind MS1 to MSn not having the authority to assign the transmission right and registers and manages each terminal joining in a group. The PoC server 30 assigns the transmission right to another terminal belonging to the group on the basis of designation from the terminal of first kind 10, and transmission data from the terminal assigned the transmission right is broadcast at a time via a packet communication network.

Abstract: Provided is a communication terminal which can be connected to a plurality of types of network and switching to a network appropriate for a content to be handled can be performed without forcing a user to perform the switching to a connection destination. It is also possible to provide a communication method using the communication terminal, a program, and a recording medium. The communication terminal transmits a content transmission request to an external server and receives a response to the content transmission request from the external server. The communication terminal extracts content information from the received response, selects at least one network in accordance with the extracted content information, and makes a connection to the selected network.

Abstract: A speech communication system includes a plurality of portable terminals and a server device. The server device manages the talker right specifying a terminal which transmits speech when speech communication is performed between the portable terminals. The portable terminal includes a registration request notification unit. The registration request notification unit transmits, to the server device in response to predetermined external operation, a registration request notification for requesting registration of a reservation for the talker right. The server device includes a management table and a reservation registration unit. The management table stores management information containing the reservation status of the talker right. The reservation registration unit registers a reservation for the talker right in the management table in accordance with a registration request notification from the portable terminal. A talker right reservation method is also disclosed.

Abstract: A PoC communication system suitable for a broadcast use or the like is provided. In a communication system including a PoC server 30 and terminals 10 and terminals MS1 to MSn connectable to the PoC server 30, the PoC server 30 classifies the terminals into a terminal of first kind 10 having authority to assign a transmission right and terminals of second kind MS1 to MSn not having the authority to assign the transmission right and registers and manages each terminal joining in a group. The PoC server 30 assigns the transmission right to another terminal belonging to the group on the basis of designation from the terminal of first kind 10, and transmission data from the terminal assigned the transmission right is broadcast at a time via a packet communication network.

Abstract: Disclosed is a mobile telephone in which content displayed in an auxiliary display area is operatively associated with content displayed in a main display area to make possible more effective utilization of the auxiliary display area. A function that presents a display in the main display area and a function that presents a display in the auxiliary display area can be selected to be the same function, whereby the content displayed in the main display area and the content displayed in the auxiliary display area can be operatively associated at all times. Accordingly, a function for which a display is being presented in the main display area is capable of utilizing the auxiliary display area, thereby making it possible to utilize the auxiliary display area effectively irrespective of whether the mobile telephone is open or closed.

Abstract: A speech communication system includes a plurality of portable terminals and a server device. The sever device manages the talker right specifying a terminal which transmits speech when speech communication is performed between the portable terminals. The portable terminal includes a registration request notification unit. The registration request notification unit transmits, to the server device in response to predetermined external operation, a registration request notification for requesting registration of a reservation for the talker right. The server device includes a management table and a reservation registration unit. The management table stores management information containing the reservation status of the talker right. The reservation registration unit registers a reservation for the talker right in the management table in accordance with a registration request notification from the portable terminal. A talker right reservation method is also disclosed.

Abstract: Disclosed is a mobile telephone in which content displayed in an auxiliary display area is operatively associated with content displayed in a main display area to make possible more effective utilization of the auxiliary display area. A function that presents a display in the main display area and a function that presents a display in the auxiliary display area can be selected to be the same function, whereby the content displayed in the main display area and the content displayed in the auxiliary display area can be operatively associated at all times. Accordingly, a function for which a display is being presented in the main display area is capable of utilizing the auxiliary display area, thereby making it possible to utilize the auxiliary display area effectively irrespective of whether the mobile telephone is open or closed.