Patent ID: 7613180

Claim:
A media communication apparatus, connected to a calling speech terminal of a communication source which is capable of receiving communication connection services provided by telecommunications carriers, the media communication apparatus comprising: an auto selection unit automatically selecting a telecommunications carrier on the basis of an address of a speech terminal inputted as a communication destination at a call origination by the calling speech terminal of the communication source, in accordance with a preset criterion; and a communication system communicating media between the calling speech terminal of the communication source and the calling speech terminal of the communication destination via a server of the telecommunication carriers selected by the auto selection unit, wherein the communication system is operable to: prior to establishing a session with the sever of the selected telecommunication carrier, transmit to the server a request message for establishing a session with the server; analyze contents of a response message received from the server responsive to the transmission; identify a type of a communication convention of the sip server used to communicate media on the basis of a result of analyzing the contents of the response message; and establish a session with the server in accordance with the identified communication sip convention of the server, and then, communicate media on the basis of the established session, wherein the communication system identifies a communication convention of the server by analyzing contents of a response message received in response to transmission of a subscribe request for requesting a state of the server in a case where an error message is returned from the server in response to transmission of the request message to the server of the telecommunication carrier selected by the auto selection unit.