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 …

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 …

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

The invention relates to a method of establishing a session between client user terminals
accessing IP Multimedia Sub system, IMS, networks. At least one of the IMS networks …

A method of exchanging content between a User Equipment, UE, and an Application Server,
AS, of an IP Multimedia Subsystem, IMS, or between the UE and a peer UE. The method …

A method of handling traffic within an IP Multimedia Subsystem, IMS, network. The method
comprises registering an IMS user with a first Serving Call Session Control Function, S …

Abstract A User Equipment (UE) and IP Multimedia Subsystem (IMS) network node for
indicating the IMS services and IMS applications to which a Session Initiation Protocol (SIP) …

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 of handling the delivery of push messages from a notification server of a Session
Initiation Protocol based network to a network user. The method comprises signalling to said …

Updates on access network capability are provided to an IP Multimedia System (IMS)
network. A User Equipment (UE) that is connected to the access network initiates a …