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Intel SIU520 SS7 manual SS7 Network, Hardware Requirements, Configuring a Dual SIU Pair

Models: SIU520 SS7

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SS7 Network

Building Fault-tolerant SS7 Systems Using the Intel® NetStructure™ SIU520 SS7 Signaling Gateway Application Note

Signaling Card

PCM Trunk #0

PCM Trunk #1

SIUA

PCM Trunk #2

PCM Trunk #3

Signaling Card

PCM Trunk #0

PCM Trunk #1

SIUB

PCM Trunk #2

PCM Trunk #3

SS7 Network

E-1 Trunk Containing

SS7 Signaling Only

Inter-SIU SS7 Link Set E-1 Trunk

SS7 Network

E-1 Trunk Containing

SS7 Signaling Only

Figure 17. Inter-SIU Link over Crossed E-1/T-1 Cable

Configuring a Dual SIU Pair

To create a dual-resilient configuration for the Intel NetStructure SIU520 SS7 signaling gateway, modifications are required to both the system configuration (done using the man machine interface [MMI]) and the protocol configuration (in the config.txt parameter file). This may be done remotely and trans- ferred to the SIU using FTP. More details may be found in the Intel NetStructure SIU520 Developer’s Manual.

Hardware Requirements

Configuring an SIU as one-half of a resilient pair requires additional hardware ports to carry the inter-SIU link set between SIUA and SIUB. This may be achieved using E-1/T-1 interfaces, as shown in Figure 17, or V.11 (V.35) interfaces, as shown in Figure 18. A cable, part number 842484, can be purchased from your Intel distributor to interconnect two V.11 ports between signaling cards within the SIU. For more information, refer to the Intel NetStructure SIU520 Developer’s Manual.

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Intel SIU520 SS7 manual SS7 Network, Hardware Requirements, Configuring a Dual SIU Pair

Contents

Application Note Building Fault-tolerant SS7 Systems Using the Intel NetStructureSIU520 SS7 Signaling Gateway Intel in CommunicationsTable of Contents Configuring a Dual SIU PairAppendix A Frequently Asked Questions AbstractTable of Figures Abstract IntroductionCircuit-switched API Operation Overview of SIU OperationTransaction-based API Operation Management InterfacePotential Points of Failure E-1 or T-1 TrunksFailure of SS7 Links Failure of Routes LinkFigure 5. Dual SIU Architecture Failure of Power SupplyFailure of Signaling Interface Unit Routing Architectures of a Dual-resilient SIU System Connection to a Single Adjacent Signaling PointConnection to an Adjacent Mated STP Pair Straight Configuration Crossed ConfigurationComparison Subject links and one inter-SIU link. Allocating a single link meansDual SIU Architecture for Circuit-Switched Applications Inactive Adjacent Figure 12. Routing Following Failure of SIUAB Dual-resilient SIUs running SS7 protocol stack up to SCCP Dual SIU Architecture for Transaction-based ApplicationsA Dual-resilient SIUs running SS7 protocol stack to TCAP 7 SS TCAP Resiliency Based on Dialogue Groups Failure of IP SubnetworkFailure of Application TCAP Resiliency Based on DTS/DTC Option HostSIU520 HostSS7 Network Hardware RequirementsConfiguring a Dual SIU Pair SS7 NetworkSystem Configuration Changes to the config.txt Parameter FileConfiguring the Inter-SIU Link SS7 NetworkRouting Configuration Circuit Group ConfigurationExample Configuration Figure 19. Example Configuration to an Adjacent SSP/SCPConnecting a Host to Two SIUs For SIUAFor SIUB Run-time Operations of a Dual-resilient SIU SystemCommunicating with Both SIUA and SIUB GCTsetinstanceGCTgetinstance Transferring Control of a Circuit Group between SIUsTransferring the Circuit Group Re-synchronization of Circuit State InformationCircuit Group Conflict Recovery of the Failed UnitTransferring Control Back Q Do I need to activate circuit groups on a single SIU configuration? Q How many links should I configure in the inter-SIU link set?Q How can I tell if an SIU fails? Q If an SIU fails do I need to take any action?1515 Route Ten Parsippany, NJ Phone