Secure voice signaling gateway
First Claim
1. A method of providing secure voice signaling communications between first and second network elements over a packet public switched telephone network (PSTN) comprising:
- encrypting a signaling packet payload at the first network element utilizing a security key defining an association between the first and second network elements, wherein the first network element receives the signaling packet payload from a transmission device through a link using SS7 protocols;
transmitting the encrypted packet payload from the first element to the second element through a link only using SS7 protocols; and
decrypting the packet payload at the second network element utilizing the security key.
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Accused Products
Abstract
Systems and methods of providing secure signaling for voice communications over a public switched voice network (PSTN) are described. The call signaling is received at a first secure voice signaling gateway (SVSG) in which it is encrypted utilizing a security key. The encrypted payload is tunneled from the first SVSG to a second SVSG at a destination network element. The destination SVSG decrypts the payload and passes it on to the destination. According to the invention the communication can be either masqueraded in which the address of the first SVSG is given as the origin or non-masqueraded in which the actual original of the voice communication is retained.
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Citations
21 Claims
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1. A method of providing secure voice signaling communications between first and second network elements over a packet public switched telephone network (PSTN) comprising:
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encrypting a signaling packet payload at the first network element utilizing a security key defining an association between the first and second network elements, wherein the first network element receives the signaling packet payload from a transmission device through a link using SS7 protocols; transmitting the encrypted packet payload from the first element to the second element through a link only using SS7 protocols; and decrypting the packet payload at the second network element utilizing the security key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for providing secure voice signaling communications between first and second network elements over a packet public switched telephone network (PSTN) comprising:
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means for encrypting a signaling packet payload at the first network element utilizing a security key defining an association between the first and second network elements, wherein the first network element receives the signaling packet payload from a transmitting device through a link using SS7 protocols; means for transmitting the encrypted packet payload from the first element to the second element through a link only using SS7 protocols; and means for decrypting the packet payload at the second network element utilizing the security key. - View Dependent Claims (10, 11, 12, 13)
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14. A secure voice signaling gateway (SVSG) for integration in an SS7 network for providing secure voice signaling communication over a packet public switched telephone network (PSTN), the SVSG comprising:
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a first interface for receiving the voice signaling communication through a link using SS7 protocols; encryption means for encrypting a signaling packet payload of the signaling communication utilizing a security key; and a transmitting means to transmit the encrypted signaling packet payload via a second interface through a link using only SS7 protocols to an associated SVSG. - View Dependent Claims (15, 16, 17)
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18. A secure voice signaling gateway (SVSG) for integration in an SS7 network used in providing secure voice signaling communication over a packet public switched telephone network (PSTN), the SVSG comprising:
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a first interface for receiving an encrypted signaling packet payload of a voice signaling communication through a link using only SS7 protocols; decryption means for decrypting the encrypted signaling packet payload; and a transmitting means to transmit the decrypted signaling packet payload via a second interface to an end system through a link using SS7 protocols. - View Dependent Claims (19, 20, 21)
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Specification