METHOD AND APPARATUSES FOR MAKING USE OF VIRTUAL IMS SUBSCRIPTIONS COUPLED WITH THE IDENTITY OF A NON SIP COMPLIANT TERMINAL FOR NON-REGISTERED SUBSCRIBERS
First Claim
1. A method for initiating a session in a packet based multimedia system for a terminal not having a subscription in the packet based multimedia system, connected to the packet based multimedia system via a network access gateway for providing packet based multimedia services to the terminal, the method comprising the steps:
- Receiving a trigger message from the network access gateway for invocation of the packet based multimedia service for the terminal, by the packet based multimedia system,Retrieving an identity of the terminal, from the trigger message, by the packet based multimedia system,Coupling the identity of the terminal with a virtual subscription, by the packet based multimedia system,Initiating a session for the coupled virtual subscription, by the packet based multimedia system,Coupling the identity of the terminal with a session identifier, by the packet based multimedia system, andDecoupling the identity of the terminal from the virtual subscription when the session is initiated, by the packet based multimedia system.
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Accused Products
Abstract
The present invention relates to an overlay system between a GSM and IMS network, making use of virtual IMS subscriptions, which are temporary coupled with the identity of a non SIP compliant terminal, when the non SIP compliant terminal makes a call, is called or invokes an IMS service during the call, for the purpose of initiating a SIP session providing an IMS service to the terminal.
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Citations
25 Claims
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1. A method for initiating a session in a packet based multimedia system for a terminal not having a subscription in the packet based multimedia system, connected to the packet based multimedia system via a network access gateway for providing packet based multimedia services to the terminal, the method comprising the steps:
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Receiving a trigger message from the network access gateway for invocation of the packet based multimedia service for the terminal, by the packet based multimedia system, Retrieving an identity of the terminal, from the trigger message, by the packet based multimedia system, Coupling the identity of the terminal with a virtual subscription, by the packet based multimedia system, Initiating a session for the coupled virtual subscription, by the packet based multimedia system, Coupling the identity of the terminal with a session identifier, by the packet based multimedia system, and Decoupling the identity of the terminal from the virtual subscription when the session is initiated, by the packet based multimedia system. - View Dependent Claims (2, 3, 4, 5)
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6. The A Service Interaction Manager in a packet based multimedia system, connected to Network Access Gateways of Networks, the Service Interaction Manager comprises
a Table of Virtual Subscriptions for temporary coupling a virtual subscription to an identity of a terminal connected in the network.
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15. (canceled)
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16. A packet based multimedia system access gateway in a packet based multimedia system connected to one or more Correlation Functions and one or more Network Access Gateways the packet based multimedia system access gateway comprising
a list of virtual subscription identities, for recognizing a virtual subscription identity in a session start request message from a network access gateway and subsequent sending of a session start message to a Correlation Function.
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19. (canceled)
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20. A Media Gateway Control Function in an IP Multimedia Subsystem connected to one or more Proxy-Call Session Control Functions and one or more Network Access Gateways the Media Gateway Control Function comprising
a list of virtual subscription identities, for recognizing a virtual subscription identity in a session start request message from a Network Access Gateway and subsequent sending of an UNI SIP Invite message to a Proxy-Call Session Control Function.
Specification