In an embodiment, a client device associated with a first user performing a registration
procedure with an Internet Protocol (IP) Multimedia Subsystem (IMS) network to register the …

According to one aspect, a communication network system comprising at least one first
network and at least one second network providing application services over the first …

A system and associated method for optimizing media data in signaling stream of a network
system. A client subscribed for a presence service sends a signaling message embedding …

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 and system for responding to a processing failure of an Internet Protocol (IP)
Multimedia Subsystem (IMS). An example method includes a computing system detecting …

BACKGROUND When a communication device Submits a request to be registered in an IP
multimedia subsystem (IMS) network a number of network elements of the IMS network …

A network operator can partition network elements, includ ing elements of an IP Multimedia
Subsystem (IMS) or Policy and Charging Rules Functions (PCRFs) into groups reserved for …

A system and method for allowing legacy circuit switch user equipment (CS UE) to operate
via a packet switch system, such as an IP Multimedia Subsystem (IMS) system, is provided …

The present invention provides a method for signaling between an IP Multimedia Subsystem
(IMS) and a multi-mode terminal using concise primitives to support the use of IMS-based …

A method of facilitating access to services of an IP Multimedia Subsystem network by
services located behind an access point to said network. The access point is associated with …