A method and apparatus for maintaining service continuity for User Equipment accessing an
IP Multimedia Subsystem communication network. A routing identifier is established that …

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 …

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, apparatus, and application server for dynamically allocating an application server
within an IP Multimedia Subsystem (IMS). A Serving Call/Session Control Function (S …

A method of enabling configuration of a link between a circuit-switched Private Branch
Exchange (CS PBX), and an access gateway node that connects at least one CS PBX to an …

A method and network node for terminating an IP Multimedia Subsystem (IMS)-enabled
communication service involving a user terminal, which has been allocated an IP address by …

A method of handling SIP session initiation requests in an IP Multimedia Subsystem, IMS,
network. The method is performed at an application server, AS, within the network. The AS …

According to a first embodiment of the present invention there is provided a method of
operating a node of a commu nications network that is configured to provide an IP Multi …

An individual IMS terminal acquires address and place infor mation of a service discovery
server present in the local IP network from an AP. Next, the individual IMS terminal may …

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 …