System and Method for Determining Trust for SIP Messages
First Claim
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1. A method performed by a first network node of an IMS Network, the method comprising:
- receiving, at the first network node, a Uniform Resource Identifier (URI) in a header field in a first SIP message;
receiving, at the first network node, a token in the header field in the first SIP message, the token indicative of a type of a network node in a path of the first SIP message; and
based on the received token, sending, from the first network node, a second SIP message including the received URI, the second SIP message conveying information about the first network node.
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Abstract
A method for performing initial registration is provided. The method includes receiving a server timeout message, the server timeout message including at least a field set to a value equal to a value received during a first registration. The method further includes initiating restoration procedures by performing an initial registration.
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Citations
25 Claims
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1. A method performed by a first network node of an IMS Network, the method comprising:
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receiving, at the first network node, a Uniform Resource Identifier (URI) in a header field in a first SIP message; receiving, at the first network node, a token in the header field in the first SIP message, the token indicative of a type of a network node in a path of the first SIP message; and based on the received token, sending, from the first network node, a second SIP message including the received URI, the second SIP message conveying information about the first network node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a first network node of an IMS Network, the first network node configured to; receive a Uniform Resource Identifier (URI) in a header field in a first SIP message; receive a token in the header field in the first SIP message, the token indicative of a type of a network node in a path of the first SIP message; and based on the received token, send a second SIP message including the received URI, the second SIP message conveying information about the first network node. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer program product comprising a non-transitory tangible computer readable storage medium having instructions stored thereon that, when executed by a processing device, implement a method performed by a first network node of an IMS Network, the method comprising:
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receiving a Uniform Resource Identifier (URI) in a header field in a first SIP message; receiving a token in the header field in the first SIP message, the token indicative of a type of a network node in a path of the first SIP message; and based on the received token, sending a second SIP message including the received URI, the second SIP message conveying information about the first network node. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A system, comprising:
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a first network node of an IMS Network, the first network node comprising; a receiver configured to receive a Uniform Resource Identifier (URI) in a header field in a first SIP message and a token in the header field in the first SIP message, the token indicative of a type of a network node in a path of the first SIP message; and a transmitter configured to send, based on the received token, a second SIP message including the received URI, the second SIP message conveying information about the first network node.
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Specification