Patent ID: 9191428
Filing Date: 2015-11-17
Classification: H04L,H04N

Abstract:
1. A communication management system, comprising: a candidate counterpart terminal manager that stores, for each one of a plurality of communication terminals, terminal identification information of the communication terminal in association with terminal identification information of a candidate counterpart communication terminal, the candidate counterpart communication terminal being one or more counterpart communication terminals that may be requested by the communication terminal to start communication; a communications protocol manager that stores communications protocol information indicating a communication protocol of the communication terminal, in association with a part of the identification information for identifying the communication terminal that uses the communications protocol; a receiver that receives identification information of a request communication terminal from the request communication terminal, the request communication terminal being one of the plurality of communication terminals; an extractor that obtains identification information of a candidate counterpart communication terminal that is associated with the identification information of the request communication terminal from the candidate counterpart terminal manager, and obtains communications protocol information associated with a subportion of the obtained identification information of the candidate counterpart communication terminal from the communications protocol manager by using only the subportion of the obtained identification information of the candidate counterpart communication terminal; a determiner that determines whether a communications protocol of the candidate counterpart communication terminal is the same as a communications protocol of the request communication terminal to generate a determination result; a transmitter that transmits terminal state information to the request communication terminal, wherein when the determination result indicates that the communications protocol of the candidate counterpart communication terminal is different than the communications protocol of the request communication terminal, the terminal state information includes the obtained identification information of the candidate counterpart communication terminal, and one of operation state information indicating that an operation state of the candidate counterpart communication terminal is unknown or information indicating that the communications protocol of the candidate counterpart communication terminal is different than the communications protocol of the request communication terminal.