Filter
Top Products
The inter-SIU signaling link set can be configured to use
any signaling processor on any signaling card and may
be carried on any of the available interfaces on the
signaling card.
If V.11 interfaces are used to carry the SS7 signaling
between the SIU and the network (this is typically the
case in North America), it is possible that there will be
free E-1/T-1 PCM ports on signaling cards. These may
be used for the inter-SIU signaling.
System Configuration
The system assignment of SIUA or SIUB is made by typ-
ing one of these commands:
CNSYS:MODE=SIUA;
or
CNSYS:MODE=SIUB;
The current assignment may be displayed by typing:
CNSYP;
Changes to the config.txt Parameter File
Each SIU is configured individually. The config.txt
parameter file held on each unit reflects the configuration
view of the local unit only; hence, assignments of link set
and link identities are only unique within a single unit.
For the dual configuration, it is necessary to modify the
protocol configuration file config.txt to assign one unit
as SIUA and the other as SIUB using the
SIU_INSTANCE command. The IP address of the other
SIU must also be declared using the SIU_REM_ADDR
command.
Configuring the Inter-SIU Link
The inter-SIU link set should be defined on both units
using the MTP_LINKSET command with bit 15 of the
<flags> parameter set to 1. This link set must have the
same value defined for the <local_spc> and
<adjacent_spc> values; this will be the local point code
of the SIU pair. Links are added to the inter-SIU link set
Application Note Building Fault-tolerant SS7 Systems Using the Intel
®
NetStructure™ SIU520 SS7 Signaling Gateway
18
Figure 18. Inter-SIU Link Set over V.11
SS7 Network
E-1 or T-1 Trunk Containing
SS7 Signaling and Voice Circuits
Inter-SIU SS7 Link Set
Signaling Card
PCM Trunk #0
SIUA
PCM Trunk #1
V.11 Port #A
Signaling Card
PCM Trunk #0
SIUB
PCM Trunk #1
Voice
Processing
Platform
V.11 Port #B
V.11 Port #A
V.11 Port #B
SS7 Network
E-1 or T-1 Trunk Containing
SS7 Signaling and Voice Circuits