Point Code Emulation For Common Channel Signaling System No. 7 Signaling Network
First Claim
1. A method of routing a TCAP message for dividing a SS7 signaling network into two or more subnets, comprising the steps of:
- (i) receiving said TCAP message from one of said two or more subnets;
(ii) extracting OPC, DPC and TID of said TCAP message;
(iii) looking up and retrieving, from a plurality of structured data storages, a corresponding OPC, a corresponding DPC and a corresponding TID for the other one of said two or more subnets based, partially or combinedly, on said OPC, said DPC and said TID of said received TCAP message;
(iv) replacing said OPC, said DPC, and/or said TID of said received TCAP message with said corresponding OPC, said corresponding DPC and/or said corresponding TID; and
(v) forwarding said TCAP message with said corresponding OPC, said corresponding DPC and said corresponding TID to said the other one of said two or more subnets.
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Abstract
The present invention relates to a point code emulation apparatus and method for dividing a Common Channel Signaling System No. 7 (or SS 7) signaling network into two or more networks. The point code emulator is adapted to receive TCAP messages from two or more subnets and converts, for the messages crossing over the subnets, the information of the TCAP messages, including originating point code, destination point code, and transaction identifier, (and optionally, calling party number and called party number), and forwards to the other one of the two or more subnets. Correspondence among the two or more subnets may be provisioned by an authorized user of the system, may be learned automatically by the system based on ISUP message correspondences or previous TCAP transactions, or may be automatically discovered by the system broadcasting messages to nodes in the destined one of the two or more subnets.
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Citations
18 Claims
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1. A method of routing a TCAP message for dividing a SS7 signaling network into two or more subnets, comprising the steps of:
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(i) receiving said TCAP message from one of said two or more subnets; (ii) extracting OPC, DPC and TID of said TCAP message; (iii) looking up and retrieving, from a plurality of structured data storages, a corresponding OPC, a corresponding DPC and a corresponding TID for the other one of said two or more subnets based, partially or combinedly, on said OPC, said DPC and said TID of said received TCAP message; (iv) replacing said OPC, said DPC, and/or said TID of said received TCAP message with said corresponding OPC, said corresponding DPC and/or said corresponding TID; and (v) forwarding said TCAP message with said corresponding OPC, said corresponding DPC and said corresponding TID to said the other one of said two or more subnets. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer readable medium storing executable computer program instructions which, when executed at a node, cause the node to perform a process of routing a TCAP message between two or more subnets of a SS7 signaling network, comprising steps of
(i) receiving said TCAP message from one of said two or more subnets; -
(ii) extracting OPC, DPC and TID of said TCAP message; (iii) looking up and retrieving, from a plurality of structured data storages, a corresponding OPC, a corresponding DPC and a corresponding TID for the other one of said two or more subnets based, partially or combinedly, on said OPC, said DPC and said TID of said received TCAP message; (iv) replacing said OPC, said DPC, and/or said TID of said received TCAP message with said corresponding OPC, said corresponding DPC and/or said corresponding TID; and (v) forwarding said TCAP message with said corresponding OPC, said corresponding DPC and said corresponding TID to said the other one of said two or more subnets. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A network apparatus for routing a TCAP message between at least two subnets of a SS7 signaling network, comprising:
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(i) a corresponding number of interfaces to said at least two subnets of said SS7 signaling network for interfacing with said at least two subnets; (ii) a plurality of structured data storages; (iii) a processor in communication with said corresponding number of said interfaces and said plurality of data storage, wherein said processor is for carrying out a process of said routing said TCAP message between said at least two subnets, said process comprising the process of; receiving said TCAP message from one of said two or more subnets; extracting OPC, DPC and TID of said TCAP message; looking up and retrieving, from said plurality of structured data storages, a corresponding OPC, a corresponding DPC and a corresponding TID for the other one of said two or more subnets based, partially or combinedly, on said OPC, said DPC and said TID of said received TCAP message; replacing said OPC, said DPC, and/or said TID of said received TCAP message with said corresponding OPC, said corresponding DPC and/or said corresponding TID; and forwarding said TCAP message with said corresponding OPC, said corresponding DPC and said corresponding TID to said the other one of said two or more subnets. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification