Method for reliably recovering signaling system seven (SS7) user part message packets in response to a socket failure
First Claim
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1. A method for reliably recovering signaling system seven (SS7) user part message packets in response to a socket failure, the method comprising:
- (a) at a first node, establishing first and second connections on first and second sockets with a second node, wherein establishing the second connection includes establishing the second connection prior to failure of the first socket;
(b) transmitting IP-encapsulated SS7 messages from the first node to the second node over the first socket, the messages each including an application-level sequence number for sequencing messages received by the first and second nodes; and
(c) in response to failure of the first socket, transmitting, over the second socket, a first recovery packet from the first node to the second node, the first recovery packet including an application-level sequence number indicating the last message received by the first node.
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Abstract
Methods and systems for transmitting user part messages between signaling system seven (SS7) signaling points over an internet protocol (IP) network include receiving, at a signal transfer point, a first SS7 user part message. The first SS7 user part message can be received from a first SS7 signaling point, such as a service switching point (SSP). The first SS7 signaling point is encapsulated in a first IP packet. The first IP packet is transmitted to a second SS7 signaling point over an IP network.
148 Citations
18 Claims
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1. A method for reliably recovering signaling system seven (SS7) user part message packets in response to a socket failure, the method comprising:
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(a) at a first node, establishing first and second connections on first and second sockets with a second node, wherein establishing the second connection includes establishing the second connection prior to failure of the first socket; (b) transmitting IP-encapsulated SS7 messages from the first node to the second node over the first socket, the messages each including an application-level sequence number for sequencing messages received by the first and second nodes; and (c) in response to failure of the first socket, transmitting, over the second socket, a first recovery packet from the first node to the second node, the first recovery packet including an application-level sequence number indicating the last message received by the first node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer readable medium embodied with computer-executable instructions when executed by a computer causes the computer to perform a signaling system seven (SS7) message recovery routing method comprising the steps of:
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(a) at a first node, establishing first and second connections on first and second sockets with a second node, wherein establishing the second connection includes establishing the second connection prior to failure of the first socket; (b) transmitting internet protocol (IP) encapsulated SS7 messages from the first node to the second node over the first socket, the messages each including an application-level sequence number for sequencing messages received by the first and second nodes; and (c) in response to failure of the first socket, transmitting, over the second socket, a first recovery packet from the first node to the second node, the first recovery packet including an application-level sequence number indicating the last message received by the first node. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification