Method and arrangement for signalling in a wireless IP multimedia network and a wireless IP multimedia network terminal device
First Claim
Patent Images
1. A method for signaling in a wireless internet protocol (IP) multimedia network, wherein the method comprises:
- establishing a session with at least a first media stream in the wireless IP multimedia network between two endpoints,triggering a session initiation protocol (SIP) re-INVITE message that is received by a remote one of the endpoints,establishing a new additional media stream associated with the session for sending representations of the dual tone multi-frequency (DTMF) digits in real-time transport protocol (RTP) packets between the two endpoints using an error-protected packet data protocol (PDP) context, andtransferring a representation of the DTMF digit corresponding each keystroke pressed by a user over the said error protected PDP context.
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Abstract
The technology described relates to telecommunication networks and more specifically to a method and an arrangement for signalling in a wireless IP multimedia network and to a wireless IP multimedia network terminal device and permits 3GPP Core Network IP Multimedia Subsystems and all associated products including mobile terminals, Media Gateway, Media Gateway Control Function, etc. to support DTMF tones.
10 Citations
31 Claims
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1. A method for signaling in a wireless internet protocol (IP) multimedia network, wherein the method comprises:
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establishing a session with at least a first media stream in the wireless IP multimedia network between two endpoints, triggering a session initiation protocol (SIP) re-INVITE message that is received by a remote one of the endpoints, establishing a new additional media stream associated with the session for sending representations of the dual tone multi-frequency (DTMF) digits in real-time transport protocol (RTP) packets between the two endpoints using an error-protected packet data protocol (PDP) context, and transferring a representation of the DTMF digit corresponding each keystroke pressed by a user over the said error protected PDP context. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An arrangement for signaling in a wireless internet protocol (IP) multimedia network, the wireless IP multimedia network having a terminal A initiating a session with a terminal B with at least a first media stream through the wireless IP multimedia network,
wherein in the arrangement includes electronic circuitry configured to: -
trigger a session initiation protocol (SIP) re-INVITE message that is received by the terminal B, establish a new additional media stream for sending representations of the dual tone multi-frequency (DTMF) digits in real-time transport protocol (RTP) packets between the terminals A and B using an error-protected packet data protocol (PDP) context, and transfer a representation of the DTMF digit corresponding each keystroke pressed by the user over the error-protected PDP context. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A wireless internet protocol (IP) multimedia network terminal device comprising:
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means for initiating a multimedia session with at least a first media stream between the terminal and a remote endpoint through a wireless IP multimedia network, means for triggering a session initiation protocol (SIP) re-INVITE message that is received by the remote endpoint, means for establishing a new additional media stream for the multimedia session for sending representations of the dual tone multi-frequency (DTMF) digits in real-time transport protocol (RTP) packets between the terminal and the endpoint using an error-protected packet data protocol (PDP) context, and means for transferring a representation of the DTMF digit corresponding to each keystroke pressed on terminal by a user of the terminal over the said error protected PDP context. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification