Abstract: A wireless device includes a wireless module and an interface module. One of the wireless module and the interface module generates a first message having a predetermined format and including data, which is to be transmitted to other one of the wireless module and the interface module, and type information representing a type of the data, and transmits the first message to the other one of the wireless module and the interface module. The other one of the wireless module and the interface module generates, in accordance with the type information included in the first message, a second message having the same format as the first message and including data, which is to be replied to the one of the wireless module and the interface module, and type information representing a type of the data, and replies the second message to the one of the wireless module and the interface module.

Abstract: A wireless device includes a wireless module and an interface module. One of the wireless module and the interface module generates a first message having a predetermined format and including data, which is to be transmitted to other one of the wireless module and the interface module, and type information representing a type of the data, and transmits the first message to the other one of the wireless module and the interface module. The other one of the wireless module and the interface module generates, in accordance with the type information included in the first message, a second message having the same format as the first message and including data, which is to be replied to the one of the wireless module and the interface module, and type information representing a type of the data, and replies the second message to the one of the wireless module and the interface module.

Abstract: An object of the present invention is to realize packet communication between an IPv6 terminal connected to an IPv6 network and an IPv4 terminal connected to an IPv4 network. Another object of the present invention is to realize RTP communication for establishing sessions in accordance with SIP between an IPv6 terminal connected to an IPv6 network and an IPv4 terminal connected to an IPv4 network. For these objects, the present invention provides an IPv6/IPv4 translator for translating packets between IPv6 and IPv4 with means of translating addresses described in SIP messages into IPv6 addresses or IPv4 addresses. Moreover, the present invention provides the aforementioned IPv6/IPv4 translator with means of translating addresses described in SDP messages into IPv6 addresses or IPv4 addresses. These SDP messages shall be related to media data transmissions.