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

A) Dual-resilient SIUs running SS7 protocol stack to TCAP

 

Host 0

 

Host N

 

TC User

. . .

TC User

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ethernet

SIUA

 

 

SIUB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCAP

 

 

 

TCAP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCCP

 

 

 

SCCP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MTP

 

 

 

MTP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B) Dual-resilient SIUs running SS7 protocol stack up to SCCP

Host 0

 

 

 

Host N

 

 

 

 

 

TC User

 

 

 

 

 

TC User

 

 

 

 

 

 

 

 

 

 

. . .

 

 

 

 

 

 

 

 

 

 

 

TCAP

 

 

 

 

 

 

 

TCAP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTC

 

 

 

 

 

 

 

DTC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ethernet

 

 

 

 

 

 

 

SIUA

 

 

 

 

 

 

 

 

 

SIUB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTS

 

 

 

 

DTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCCP

 

 

 

 

SCCP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MTP

MTP

Figure 13. Two Different Architectures for a TCAP Processing SIU System

Dual SIU Architecture for Transaction-based Applications

There are two ways of architecting a dual-resilient SIU520-based system for processing TCAP transactions.

Running the SS7 stack up to SCCP on the SIUs

Running the SS7 stack up to TCAP on the SIUs

In the first case, TCAP and potential layers sitting on top of TCAP run on the application host(s) and an additional piece of software is required on each SIU to distribute TCAP transactions to multiple application hosts. This software option is called distributed transaction server (DTS). Figure 13 depicts this architectural difference.

13

Page 16
Image 16
Intel SIU520 SS7 manual Dual SIU Architecture for Transaction-based Applications, Siua Siub

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.