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

Inter-SIU

Link Set

Link Set id 0

Single Point

Code

SIUA

SIUB

Point

Code 300

Link Set id 1

link_id 1, slc 0

Link Set id 1

Point

Code 400

STPA

SSP/SCP

Point

Code 600

STPB

Point

Code 500

Figure 20. Example Configuration to an Adjacent STP Pair

For an SIU pair connected to a mated STP pair, carrying the inter-SIU link over the second E-1 port of the first signaling card the configuration (Figure 20) would be:

Run-time Operations of a Dual-resilient SIU System

For SIUA

 

 

 

 

MTP_CONFIG 0 0 0x0000

 

 

MTP_LINKSET 0

300 1 0x8000 300 0x8

MTP_LINKSET 1

400 1 0x0000 300 0x8

MTP_LINK 0 0 0 0 1 1 1 1 0 0x4006

MTP_LINK 1 1 0 0 1 2 1 2 16 0x0006

MTP_ROUTE 300

0

0x0020

 

 

MTP_ROUTE 400

1

0x0020

0x0001

0

MTP_ROUTE 500

1

0x0020

0x0001

0

MTP_ROUTE 600

1

0x0020

0x0001

0

For SIUB

 

 

 

 

MTP_CONFIG 0 0 0x0000

 

 

MTP_LINKSET 0

300 1 0x8000 300 0x8

MTP_LINKSET 1

500 1 0x0000 300 0x8

MTP_LINK 0 0 0 0 1 1 1 1 0 0x6006

MTP_LINK 1 1 0 0 1 2 1 2 16 0x0006

MTP_ROUTE 300

0

0x0020

 

 

MTP_ROUTE 400

0

0x0020

0x0001

0

MTP_ROUTE 500

1

0x0020

0x0001

0

MTP_ROUTE 600

1

0x0020

0x0001

0

Connecting a Host to Two SIUs

In a dual SIU system, each host should connect to both SIUA and SIUB at start-up. This is achieved using the rsicmd utility twice: first with an siu_id of 0 for SIUA and second with an siu_id of 1 for SIUB. For example, if SIUA has an IP address of 123.234.345.110 and SIUB an IP address of 123.234.345.220, the entry in the host’s system configuration file, system.txt, would be:

FORK_PROCESS rsicmd 0 0xef 0 123.234.345.110 9000

FORK_PROCESS rsicmd 1 0xef 0 123.234.345.220 9000

The “concerned module id” (0xef in this case) will receive status indications from the rsi process for both connections. The id field of the MSG header is set to the siu_id to identify the link that each status indication relates to.

The ability to communicate between a host and an SIU is indicated by RSI_MSG_STATUS messages received by the conc_id application process (0xef in this case).

20

Page 23
Image 23
Intel SIU520 SS7 manual Connecting a Host to Two SIUs, For Siua, For 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.