METHODS AND DEVICES PROVIDING POSSIBILITY TO CONTROL SERVICE SESSION OF IP MULTIMEDIA SUBSYSTEMS BY MEANS OF ACCESS TO CIRCUIT-SWITCHED NETWORKS USING UNSTRUCTURED SUPPLEMENTARY SERVICE DATA MESSAGES

摘要

FIELD: information technology. ^ SUBSTANCE: system is suggested which provides possibility for IMS subscribers to perform control of services and session in IMS services via CS access. User equipment (UE), which is registered in IMS network, but have no access to IMS network using IP, still can get access to IMS network and control IMS sessions by means of transmission in the form of unstructured supplemental service data (USSD) via available circuit-switched network which is connected to IMS network. ^ EFFECT: providing system to control ICS and session where inconsistent method of services and IMS sessions control could be eliminated. ^ 25 cl, 18 dwg