Using PSTN Reachability to Verify Caller ID Information in Received VoIP Calls
First Claim
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1. A method comprising:
- receiving a caller identification (ID) identifying a calling party telephone number in a call initiation message transmitted from a VoIP call agent;
determining the identity of the VoIP call agent;
verifying that a public switched telephone network (PSTN) call to the calling party telephone number would arrive at a VoIP call agent having the determined identity; and
applying, responsive to the call initiation message, one or more rules based at least in part on the verifying step.
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Abstract
A system for verifying caller ID information in received VoIP calls. In particular implementations, a method includes receiving a caller identification (ID) identifying a calling party telephone number in a call initiation message transmitted from a VoIP call agent; determining the identity of the VoIP call agent; verifying that a public switched telephone network (PSTN) call to the calling party telephone number would arrive at a VoIP call agent having the determined identity; and applying, responsive to the call initiation message, one or more rules based at least in part on the verifying step.
106 Citations
21 Claims
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1. A method comprising:
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receiving a caller identification (ID) identifying a calling party telephone number in a call initiation message transmitted from a VoIP call agent; determining the identity of the VoIP call agent; verifying that a public switched telephone network (PSTN) call to the calling party telephone number would arrive at a VoIP call agent having the determined identity; and applying, responsive to the call initiation message, one or more rules based at least in part on the verifying step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Logic encoded in one or more tangible media for execution and when executed operable to:
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receive a caller identification (ID) identifying a calling party telephone number in a call initiation message transmitted from a VoIP call agent; determine the identity of the VoIP call agent; verify that a public switched telephone network (PSTN) call to the calling party telephone number would arrive at a VoIP call agent having the determined identity; and apply, responsive to the call initiation message, one or more rules based at least in part on the verifying step. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus comprising:
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one or more network interfaces; a memory; one or more processors; and a call agent application physically stored in the memory comprising computer-readable instructions operative to cause the one or more processors to; receive a caller identification (ID) identifying a calling party telephone number in a call initiation message transmitted from a VoIP call agent; determine the identity of the VoIP call agent; verify that a public switched telephone network. (PSTN) call to the calling party telephone number would arrive at a VoIP call agent having the determined identity; and apply, responsive to the call initiation message, one or more rules based at least in part on the verifying step.
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Specification