Intel SIU520 SS7 How can I tell if an SIU fails?, If an SIU fails do I need to take any action?

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

Appendix A: Frequently Asked Questions

Q: How can I tell if an SIU fails?

A:The status of the communication between the host and the SIU is indicated by RSI_MSG_STATUS messages.

Q:Do I need to activate circuit groups on a single SIU configuration?

A: No.

Q:How many links should I configure in the inter-SIU link set?

Q:What happens if an SS7 message for a circuit or transaction is received by an SIU that does not control that circuit or transaction?

A:The message is automatically passed to the partner SIU using the TCP/IP LAN.

Q:If a single SS7 link to the network fails on one of my SIUs, does my application need to take any action?

A:No. If there are other links remaining on that unit, the traffic will changeover to one of these; otherwise, the traffic will be automatically passed to the other unit via the inter-SIU SS7 link set.

Q:If all of the SS7 links to one of the SIUs fails do I need to take any action?

A:No. The SIU will automatically re-route transmit traffic via the inter-SIU SS7 link set.

Q: If an SIU fails do I need to take any action?

A:Yes. For switched-circuit applications, the circuit groups controlled by the failed unit should be activated on the remaining unit. Further information may be found in the Intel NetStructure SIU520 Developer’s Manual.

Q: What happens if an inter-SIU SS7 link fails?

A:The SIU will changeover to use other SS7 links in the inter-SIU link set.

Q:What happens if the Ethernet interfaces fail on an SIU?

A:This will cause failure of all of the connections between the hosts and the SIU. The SIU will react by deactivating all connected SS7 links, preventing any more signaling information from being received from the SS7 network. The host applications will receive an indication indicating failure of the SIU and should transfer any circuit groups controlled by this SIU to the remaining unit, the effective result being as though the complete unit had failed.

A:The inter-SIU link set should have sufficient capacity to enable it to carry the maximum traffic exchanged between a single SIU and the adjacent signaling point. To eliminate single points of failure, more than one link may be configured in the link set, each link connecting to a different signaling card.

Appendix B: For More Information

Intel® NetStructure™ SIU520 Developer’s Manual, Issue 2, available at http://resource.intel.com/telecom/ support/ss7/siu520/u06siu02.pdf

Intel® NetStructure™ SIU520/Intel® NetStructure™ SG430 Hardware User Manual, Issue 3, available at http://resource.intel.com/telecom/support/ss7/CD/ ProductSpecific/SG430/HardwareUserManual/ U05SIU03.pdf

Intel® NetStructure™ SS7 Protocols DTS User Guide, Issue 2, available at http://resource.intel.com/ telecom/support/ss7/cd/GenericInfo/ GeneralDocumentation/U24SSS02-DTS-UG.pdf

Appendix C: Abbreviations

API Application programming interface

CIC Circuit identification code

DPC Destination point code

DTC Distributed transaction client

DTS Distributed transaction server

LAN Local area network

MMI Man machine interface

PCM Pulse code modulation

SIU Signaling interface unit

SS7 Signaling system 7

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Contents Application Note Intel CommunicationsTable of Contents Table of Figures Abstract SIU Circuit-switched API OperationManagement Interface Transaction-based API OperationSIU Connected to Adjacent Node with Two Links in Link Set Failure of SS7 LinksLink Failure of RoutesFailure of Signaling Interface Unit Failure of Power SupplyRouting Architectures of a Dual-resilient SIU System Connection to a Single Adjacent Signaling PointConnection to an Adjacent Mated STP Pair Compares the advantages and disadvantages of these methods SS7 Dual SIU Architecture for Circuit-Switched ApplicationsMTP1-3 Circuit Group Active Inactive MTP1-3 Siua Siub Dual SIU Architecture for Transaction-based ApplicationsSS7 Failure of Application Failure of IP SubnetworkSIU520 HostInter-SIU Link over Crossed E-1/T-1 Cable Hardware RequirementsSystem Configuration Changes to the config.txt Parameter FileConfiguring the Inter-SIU Link Routing Configuration Circuit Group ConfigurationExample Configuration Connecting a Host to Two SIUs For SiuaFor Siub Transferring Control of a Circuit Group between SIUs Communicating with Both Siua and SiubGCTsetinstance GCTgetinstanceRe-synchronization of Circuit State Information Transferring the Circuit GroupRecovery of the Failed Unit Transferring Control BackCircuit Group Conflict What happens if the Ethernet interfaces fail on an SIU? How can I tell if an SIU fails?If an SIU fails do I need to take any action? What happens if an inter-SIU SS7 link fails?Route Ten Parsippany, NJ Phone

SIU520 SS7 specifications

The Intel SIU520 SS7 is a significant advancement in the realm of telecommunications, specifically designed for seamless signaling in a wide array of telecommunication infrastructures. As a part of Intel's pioneering suite of products, the SIU520 plays a critical role in managing signaling for telephony systems that require efficient handling of SS7 protocols.

One of the main features of the SIU520 is its support for the SS7 signaling protocol, which is pivotal for the establishment and management of telephone calls over traditional circuit-switched networks. With its robust design, the SIU520 ensures reliability in signaling, contributing to the reduction of call set-up times and the minimization of errors, thus enhancing the overall quality of communication services.

The SIU520 incorporates advanced technologies such as high-speed data processing capabilities, allowing it to handle multiple signaling messages concurrently. This is particularly important in environments with high call volumes, where efficient processing can significantly affect the performance of telecommunication services. Furthermore, the architecture of the SIU520 is designed for scalability, enabling easy integration into existing infrastructures while accommodating future expansions as demand increases.

Another characteristic that sets the SIU520 apart is its support for various signaling types beyond standard SS7, including ISDN and SIP. This makes it a versatile tool for service providers aiming to offer diverse services, such as voice, video, and data communications. The SIU520 is also designed with a focus on interoperability, which ensures that it can effectively communicate with equipment from different manufacturers, thus providing flexibility in deployment.

In terms of security features, the SIU520 is architected to withstand common threats in the communication landscape. It employs encryption and authentication protocols to safeguard signaling traffic, ensuring that sensitive information remains protected during transmission.

In summary, the Intel SIU520 SS7 represents a robust and flexible signaling solution crucial for modern telecommunications. With its support for multiple protocols, high processing speeds, scalability, and secure communication capabilities, it stands as a testament to Intel's commitment to advancing telecommunication technologies and enhancing the efficiency and reliability of communication networks worldwide.
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