Policy control and billing support for call transfer in a session initiation protocol (SIP) network
First Claim
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1. A method comprising:
- receiving a first session initiation protocol (SIP) message at a first SIP server, the first SIP message initiating a call transfer;
appending billing information and a digital signature to the first SIP message; and
receiving a second SIP message initiating a call related to the call transfer at a second SIP server, the second SIP message including the billing information and the digital signature, the second SIP server generating an indication that a party indicated by the billing information be billed for the call when the digital signature indicates that the second SIP message is authentic.
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Accused Products
Abstract
A session initiation protocol (SIP) server adds billing and authentication information to conventional SIP messages used in establishing call transfers. This additional information is later verified by a SIP server and used to enable advanced billing and fraud protection features for call transfers in a SIP telecommunications network.
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Citations
35 Claims
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1. A method comprising:
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receiving a first session initiation protocol (SIP) message at a first SIP server, the first SIP message initiating a call transfer; appending billing information and a digital signature to the first SIP message; and receiving a second SIP message initiating a call related to the call transfer at a second SIP server, the second SIP message including the billing information and the digital signature, the second SIP server generating an indication that a party indicated by the billing information be billed for the call when the digital signature indicates that the second SIP message is authentic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for effecting a call transfer in accordance with session initiation protocol (SIP), the method comprising:
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receiving a first SIP message at a SIP server, the first SIP message being generated by a first party, addressed to a second party, and indicating that the first party is requesting a call be initiated between the second party and a third party; accessing account information associated with the first party that includes call policy information associated with the call; and determining whether to bill the first party for the call between the second and third party based on the call policy information. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a database configured to store account information relating to users of a telecommunications network; and a session initiation protocol (SIP) server configured to receive a first SIP message initiating a call transfer, the SIP server configured to append billing information and a digital signature to the first SIP message based on account information of one of the users stored in the database, the digital signature providing for authentication of the call transfer. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A system comprising:
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means for receiving a first session initiation protocol (SIP) message that initiates a call transfer; means for appending billing information and a digital signature to the first SIP message; and means for receiving a second SIP message initiating a call related to the call transfer, the second SIP message including the billing information and the digital signature, and generating an indication that a party indicated by the billing information be billed for the call when the digital signature indicates that the second SIP message is authentic. - View Dependent Claims (27)
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28. A server in a telecommunications network, the server comprising:
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a processor; a memory containing program instructions for configuring the processor to receive a session initiation protocol (SIP) message that includes a digital signature that relates to a call transfer in the network; validate the digital signature; and determine a party to bill for the call transfer based on whether the validation of the digital signature is successful. - View Dependent Claims (29, 30, 31)
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32. A server in a telecommunications network, the server comprising:
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a processor; a memory containing program instructions for configuring the processor to receive a session initiation protocol (SIP) REFER message relating to a call transfer in the network; and determine whether to forward the SIP REFER message based on profiles associated with parties involved in the call transfer. - View Dependent Claims (33, 34)
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35. A method comprising:
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receiving a first session initiation protocol (SIP) message at a SIP server, the first SIP message initiating a call transfer; appending billing information and a digital signature to the first SIP message; and receiving a second SIP message initiating a call related to the call transfer at the SIP server, the second SIP message including the billing information and the digital signature, the SIP server generating an indication that a party indicated by the billing information be billed for the call when the digital signature indicates that the second SIP message is authentic.
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Specification