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

Abstract In IP Multimedia Subsystem (IMS) IMS Control Channel Protocol (ICCP) is used
between a user equipment (UE) and IMS Control Channel Function (ICCF) and Session …

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 …

A method is disclosed for use by an Interrogating Call/Session Control Function (I-CSCF) of
an IP Multimedia Subsystem (IMS). The method comprises, in response to receipt of a …

A method, application server, and Serving Call/Session Control Function (S-CSCF) for
allocating a SIP Application Server to a subscriber in an IP Multimedia Subsystem. A Home …

A method of distributing application server addresses in an IP Multimedia Subsystem. Upon
allocation of an application server to a subscriber, the allocated or another application …

Abstract A SIP Gateway (SIPGW) coupled to an IP Multimedia Subsystem (IMS) is disclosed
that detects when a first party, using a Plain Ordinary Telephone Service (POTS) telephone …

In one embodiment, a scheme is disclosed for managing call continuity in a network
environment including a circuit switched (CS) network and an IP multimedia subsystem …

(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 …

A triggering method for IP multimedia service control. The triggering method comprises
examining a SIP response message received by a S-CSCF according to a set of response …