Transfer of Part of a Push to Talk Session
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for transferring part of a push to talk type session from a first mobile terminal to a second mobile terminal. The first terminal sends a SIP REFER message to a PoC server controlling the session. The SIP REFER message identifies the second terminal and the part of the session to be transferred. The transferred part may be a media type that is not supported or accepted by the first terminal. The PoC server sends a SIP INVITE message to the second terminal and indicates the part of the session to be transferred. The PoC server may send NOTIFY messages to the first terminal indicating the status of the transfer. If the transfer is accepted, the PoC server may send a confirmation to the first terminal, which may then send a re-INVITE message to the PoC server to remove responsibility for the transferred part of the session.
78 Citations
61 Claims
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1-35. -35. (canceled)
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36. A method of transferring only a part of a push to talk type session from a first terminal to a second terminal, said method comprising the steps of:
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creating in the first terminal, a Session Initiation Protocol (SIP) REFER message which identifies the second terminal and indicates which part of the session is to be transferred; and sending the SIP REFER message from the first terminal to a server controlling the session. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. An apparatus in a first mobile terminal for transferring only a part of a push to talk type session from the first mobile terminal to a second mobile terminal, said apparatus comprising:
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means for creating a Session Initiation Protocol (SIP) REFER message which identifies the second terminal and indicates which part of the session is to be transferred; and means for sending the SIP REFER message from the first mobile terminal to a server controlling the session. - View Dependent Claims (50, 51)
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52. A method of transferring only a part of a push to talk type session from a first terminal to a second terminal, said method comprising the steps of:
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receiving by a server controlling the session, a Session Initiation Protocol (SIP) REFER message from the first terminal, said SIP REFER message identifying the second terminal and indicating which part of the session is to be transferred; and sending a SIP INVITE message to the second terminal indicating which part of the session is to be transferred. - View Dependent Claims (53, 54, 55, 56)
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57. An apparatus in a server for transferring only a part of a push to talk type session from a first terminal to a second terminal, said apparatus comprising:
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means for receiving a Session Initiation Protocol (SIP) REFER message from the first terminal, said SIP REFER message identifying the second terminal and indicating which part of the session is to be transferred; and means for sending a SIP INVITE message to the second terminal indicating which part of the session is to be transferred. - View Dependent Claims (58, 59, 60, 61)
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Specification