Telefonaktiebolaget Lm Ericsson (publ)

Martien Huijsmans

Rogier August Caspar Joseph Noldus

Jos Den Hartog

Erik Van Der Velden

Sjaak Derksen

Ivo Sedlacek

Gert Öster

Signalling messages in an Internet Protocol, IP, communications network comprising a chain of at least two entities applying object oriented processing of signalling messages are exchanged between the at least two entities of the IP communications network comprising object oriented based data items. Parsing and inverse parsing of text based signalling messages are effectively avoided, thereby reducing system resources and increasing processing speed of the system as a whole.

Exchange of signalling messages in an internet protocol communications network between entities applying object oriented processing of signalling messages

The invention relates to a method, network ad network entity for establishing a communication session between a calling subscriber residing in a first Visited IMS network and a called subscriber roaming in a second Visited IMS network. The method includes routing a first Invite request for the communication session via a media path extending from the first Visited IMS network via a Home IMS network of the called subscriber to the second Visited IMS network, and establishing the communication session. The method further includes inserting an additional IMS network entity, residing in the second Visited IMS network, in the part of the media path extending from the first Visited IMS network to the Home IMS network of the called subscriber and removing the Home IMS network of the called subscriber from the media path.

Method, network and network entity for establishing a communication session to a user equipment roaming in IMS

Signalling messages in an Internet Protocol, IP, communications network comprising a chain of at least two entities () applying object oriented processing () of signalling messages are exchanged between the at least two entities () of the IP communications network comprising object oriented based data items. Parsing and inverse parsing of text based signalling messages are effectively avoided, thereby reducing system resources and increasing processing speed of the system as a whole.

During a registration procedure by a User Equipment (UE) via a Proxy Call Session Control Function (P-CSCF) node and a Serving Call Session Control Function (S-CSCF) node, the S-CSCF node provides a policy indicator in a response message to a register request message. The policy indicator enables subsequent operation of the node to be controlled according to whether or not a registered UE has an associated policy. As such, delays (such as delays associated with retrieving an associated policy) are only experienced by UEs that have previously been determined as having such an associated policy, rather than all UEs being affected in the same way.

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Oisterwijk, Netherlands

Martien Huijsmans