Intel SIU520 SS7 manual Dual SIU Architecture for Circuit-Switched Applications

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

Application

TCP/IP Ethernet

MTP1-3

Circuit Group 0

[Active]

Circuit Group 1

[Inactive]

SIUA

Inter-SIU

SS7 Link Set

SS7

Adjacent

Signaling

Point

 

SS

7

 

 

 

Circuit Group 0

 

 

[Inactive]

 

 

Circuit Group 1

 

 

[Active]

 

SIUB

MTP1-3

 

Transmit traffic for circuits active on SIUA

Received traffic for circuits active on SIUA

Figure 10. Normal Routing for Circuit Group 0 When Controlled by SIUA

Dual SIU Architecture for Circuit-Switched Applications

Within the SIU environment, circuits are configured in groups, each group equating to all the circuits multiplexed onto a single E-1 or T-1 PCM trunk. The SIU provides the SS7 circuit control and the application platform (or host) terminates the physical channels, typically with a voice processor.

For normal operation, half the circuit groups are controlled by SIUA and half by SIUB. As each application platform starts up and connects to both SIUA and SIUB, the application must nominate which SIU is to control the

signaling for each of the circuit groups it terminates. A circuit group activation command must be sent to the selected SIU for each circuit group. Any outgoing messages for circuits in this group must be sent to this SIU, as shown in Figure 10.

The adjacent signaling point views the links connected to SIUA and SIUB as the same link set and, as such, is free to send messages for the circuits controlled by SIUA to either unit. In the case where SIUB receives a message for a circuit controlled by SIUA, the message is automatically routed to the correct controlling circuit group using the LAN Ethernet connection (shown by the shaded arrows in Figure 10).

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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 RequirementsChanges to the config.txt Parameter File System ConfigurationConfiguring the Inter-SIU Link Circuit Group Configuration Routing ConfigurationExample Configuration For Siua Connecting a Host to Two SIUsFor Siub GCTsetinstance Communicating with Both Siua and SiubGCTgetinstance Transferring Control of a Circuit Group between SIUsRe-synchronization of Circuit State Information Transferring the Circuit GroupTransferring Control Back Recovery of the Failed UnitCircuit Group Conflict If an SIU fails do I need to take any action? How can I tell if an SIU fails?What happens if an inter-SIU SS7 link fails? What happens if the Ethernet interfaces fail on an SIU?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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