Research on Initial Filter Criteria of IP Multimedia Subsystem
Yafang Wang, Xiaozhe Zheng, Leilei KANG, Bingyang CHENG · Proceedings of the 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013) · 2013
IMS offers a unified service trigger mechanism, whose core is triggering the service to the corresponding SIP application server which based on initial filter criteria.Then the exclusive SIP application servers provide various valueadded multimedia services for the users.This paper researches how to create the exclusive service data which is Initial Filter Criteria, when a user receives an IMS subscription which contains specific value-added services.Then the SIP request initiated can be implemented routing to the appropriate application server accurately.