Telefonaktiebolaget Lm Ericsson (Publ)

Hans Nordin

Andreas Anulf

Jan Dahl

Jörgen Axell

Tomas Holm

Catherine Mulligan

According to a first aspect of the present invention there is provided a method of facilitating the end-to-end transfer of a URI between a plurality of SIP entities. The method comprising generating a SIP message and including the URI to be transferred in a Contact header of the message and including in the Contact header a parameter indicating to a back-to-back user agent that this URI is not to be changed or replaced.

End-to-end address transfer

A method of starting a third party application subscription in a set of Application Servers located within an IP Multimedia Subsystem network. The method comprises receiving a subscription start request at one of said Application Servers, the request including subscription data, starting the subscription data at that Application Server, and storing the subscription data as transparent data in a Home Subscriber Server, from that Application Server over the Sh interface.

Facilitating subscription services in the IMS

A system to stop call looping in a communications network comprises a switch to receive incoming calls, a server operatively connected to the switch, and a call control function running on the server. The call control function is programmed to determine if incoming calls, received at the switch and directed to a called number, are possible looped calls. If the call control function determines that a given incoming call is a possible looped call of a previous call, then it delays the forwarding of the incoming call to the called number.

Growing community of inventors

Tullinge, Sweden

Hans Nordin