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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.
Building Fault-tolerant SS7 Systems Using the Intel
®
NetStructure™ SIU520 SS7 Signaling Gateway Application Note
17
Figure 17. Inter-SIU Link over Crossed E-1/T-1 Cable
SS7 Network
E-1 Trunk Containing
SS7 Signaling Only
Inter-SIU SS7 Link Set
E-1 Trunk
Signaling Card
PCM Trunk #0
SIUA
PCM Trunk #3
PCM Trunk #1
PCM Trunk #2
Signaling Card
PCM Trunk #0
SIUB
PCM Trunk #3
PCM Trunk #1
PCM Trunk #2
SS7 Network
E-1 Trunk Containing
SS7 Signaling Only