Push-to-talk telecommunications system utilizing a voice-over-IP network
First Claim
1. A method for enabling a PTT private call between users in a wireless communications network, the method comprising:
- receiving an SIP SUBSCRIBE to request a speech token of a multicast group, the SIP SUBSCRIBE including private identifications for a called party and a calling party;
responsive to receipt of the SIP SUBSCRIBE, removing the calling party and the called party from the multicast group; and
communicating speech packets from the calling party to the called party in a half-duplex manner.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and system to provide push-to-talk from one user to another in a wireless packet data telecommunications network is described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices are segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.
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Citations
20 Claims
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1. A method for enabling a PTT private call between users in a wireless communications network, the method comprising:
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receiving an SIP SUBSCRIBE to request a speech token of a multicast group, the SIP SUBSCRIBE including private identifications for a called party and a calling party; responsive to receipt of the SIP SUBSCRIBE, removing the calling party and the called party from the multicast group; and communicating speech packets from the calling party to the called party in a half-duplex manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for enabling a PTT private call for users in a wireless communication network in which the users are registered as members of a multicast group, the method comprising:
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receiving private identifications for each of a calling party and a called party; responsive to receipt of the calling and called party private identifications, temporarily removing the calling party and the called party from the multicast group; transmitting calling party information to the called party from the PTT Server; and enabling communications directly between the calling party and the called party. - View Dependent Claims (13, 14, 15, 16)
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17. A PTT server for enabling PTT private calls for users in a wireless communications network, the PIT server comprising:
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means responsive to receipt of an SIP SUBSCRIBE requesting a speech token of a multicast group and including private identifications for a called party and a calling party for removing the calling party and the called party from the multicast group; and means for communicating speech packets from the calling party to the called party in a half-duplex manner. - View Dependent Claims (18, 19, 20)
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Specification