Patent ID: 9049690
Filing Date: 2015-06-02
Classification: H04L,H04W

Abstract:
1. A communication system comprising: a call control server for packet communication and a message transmission server; wherein the call control server further comprises: a call request reception unit for receiving a call request containing communication connection path preference information of an outgoing call side and for calling an incoming call side, wherein the communication connection path preference information including at least one of bandwidth related information relating to bandwidth of a communication line used by the communication and billing related information relating to billing for the communication, wherein the communication connection path preference information is used for selecting one wireless communication system among a plurality of wireless communication systems; and a call request transmission unit for transmitting call request reception information that contains information indicating that the call request has been received and the communication connection path preference information contained in the call request to the message transmission server in order to convey the received call request to the incoming call side, and the message transmission server comprises: an information reception unit for receiving the call request reception information transmitted from the call control server; and an activation message transmission unit for transmitting an activation message for activating process of login to the call control server for packet communication by containing the communication connection path preference information contained in the call request reception information, based on the received call request reception information, to the incoming call side via a circuit switching network.