INFORMATION COMMUNICATION SYSTEM, INFORMATION COMMUNICATION METHOD, INFORMATION COMMUNICATION APPARATUS AND RECORDING MEDIUM

摘要

An information communication system includes a first terminal apparatus which includes a notifying unit for notifying of presence information including status information of an object, a second terminal apparatus which includes a transmitting unit for transmitting a subscribe request of the presence information, and a central apparatus which includes a relay unit for relaying the first and second terminal apparatuses to each other; and a control unit capable of performing operations of determining whether or not a subscription of presence information by the second terminal apparatus is permitted, when the update of the presence information is received from the first terminal apparatus and providing the notification of the presence information to the second terminal apparatus to which the presence information is permitted to be notified.