Patent ID: 8271667
Filing Date: 2012-09-18
Classification: H04L,H04M

Abstract:
1. An information service communication network comprising a plurality of application servers for providing information services, and a session management server for selectively carrying out one of a communication procedure to establish a session between one of client terminals and one of said application servers and a communication procedure to disconnect the session in response to a request from the client terminal, wherein at least one of said application servers is capable of providing different kinds of information services having different service identifiers which identify said information services provided by said one of said application servers, and said session management server is effected at least in part by a hardware processor and includes: determining an address of the particular application server based on a URI extracted from the session setup request packet when the determination resulted in success, and forwarding the session setup request to the particular application server by using the address, wherein said processor searches said service determination table based on the particular information items extracted from the session setup request packet to specify said service identifier corresponding to the particular information items, and verifies if the specified service identifier is set for the user identifier indicated in the session setup request packet to determine whether the client terminal is authorized to receive the information service identified by the specified service identifier, wherein said session setup request packet indicates a SIP message, wherein the request method included in entries of said service determination table indicates a type of the SIP message, and wherein the request method, the URI, and the content type included in the entries of said service determination table, are necessary to specify the service identifier and wherein each of said application servers returns, without executing service authorization processing on the client terminal when the session setup request was received from said session management server, a response packet to the session management server in response to the session setup request.