(57) ABSTRACT A method and information processing system provide reli ability in an IP
multimedia subsystem network. The method includes monitoring a S-CSCF (210) for its …

(57) ABSTRACT A method of authentication in an IMS includes: after receiv ing a Register
message from a UE, locating, by a P-CSCF, a CLF according to information contained in the …

The present invention relates to a network using SIP pro tocol, including an IP multimedia
subsystem (IMS) network, and more particularly, the present invention relates to a method of …

Associates Ltd.(57) ABSTRACT An IP multimedia subsystem (IMS)-based service sharing
system includes an IMS, a master IMS terminal registered in the IMS, and a slave IMS …

A method for restoring connectivity between a node in an IP Multimedia Subsystem, IMS,
network, and a User Equipment, UE. The UE is associated with a Proxy Call Session Control …

BACKGROUND 0003 IP Multimedia services provide a dynamic combi nation of Voice,
video, messaging, data, etc. within the same session. By growing the number of basic …

A system, method, and Proxy Call/Session Control Function (P-CSCF) for transporting
signaling connectivity status information relating to a signaling connection between a …

A method for switching the session control path of IMS centralized services is provided.
When the condition for switching the session control path is satisfied during the ICS session …

IP Multimedia Subsystem (IMS) are provided. The method includes: triggering a redundant
Call Session Control Func tion (CSCF); obtaining, by the redundant CSCF, user backup data …

The present invention provides a technique where application servers can initiate sessions
within the IMS network by ini tially sending session initiation messages to the I-CSCF. By …