In one aspect, the invention provides a method, and associated apparatus for re-registering
a contact address of a user of an IP Multimedia Subsystem, IMS, network. A request for re …

In a first aspect, the invention provides a processing method to be performed in a
communications network to process a service request relating to a user, said method com …

A method, an apparatus, and a system for processing registration backup data are
disclosed. A Serving Call Session Control Function (S-CSCF) receives a request from a …

(57) ABSTRACT 709/227 Methods, devices, and systems for creating an intermediate
TO9/230 layer between a SIP endpoint and a SIP service. The interme 370,352 diate layer …

(57) ABSTRACT A method, an apparatus, and a system for processing registration backup
data are provided. The method includes: a Serving Call Session Control Function (S-CSCF) …

Abstract Management of a Security Association (SA) between an Internet protocol
Multimedia Subsystem (IMS) and a terminal in a communication system. A method of …