Secure voice signaling gateway
First Claim
1. A method of providing secure voice signaling communications between first and second network elements over a packet network 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;
transmitting the encrypted packet payload from the first element to the second element; 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
18 Claims
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1. A method of providing secure voice signaling communications between first and second network elements over a packet network 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;
transmitting the encrypted packet payload from the first element to the second element; and
decrypting the packet payload at the second network element utilizing the security key. - View Dependent Claims (2, 7, 8)
- encrypting a signaling packet payload at the first network element utilizing a security key defining an association between the first and second network elements;
- 3. The method as defmed in claim I wherein the signaling packet payload and an associated header are encrypted at the first network element and decrypted at the second network element.
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5. The method as defined in claim I wherein Global Title Translation (GTT) is performed at the first element to determine which network element in the packet network to send the packet.
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9. An apparatus for providing secure voice signaling communications between first and second network elements over a packet network comprising:
- 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;
means for transmitting the encrypted packet payload from the first element to the second element; and
means for decrypting the packet payload at the second network element utilizing the security key. - View Dependent Claims (10, 11, 12)
- 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;
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13. A secure voice signaling gateway (SVSG) for integration in an SS7 network for providing secure voice signaling communication over a packet network, the SVSG comprising:
- a first interface for receiving the voice signaling communication;
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 to an associated SVSG. - View Dependent Claims (14, 15)
- a first interface for receiving the voice signaling communication;
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16. A secure voice signaling gateway (SVSG) for integration in an SS7 network used in providing secure voice signaling communication over a packet network, the SVSG comprising:
- a first interface for receiving an encrypted signaling packet payload of a voice signaling communication;
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. - View Dependent Claims (17, 18)
- a first interface for receiving an encrypted signaling packet payload of a voice signaling communication;
Specification