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SS7G2x Signaling Server SGW Mode User Manual Issue 4
Figure 1. M3UA Backhaul Configuration
1.9.8 M2PA Longhaul Operation
The Signaling Gateway is capable of replacing TDM SS7 links with signaling links operating over IP providing
the equivalent functionality to MTP Layer 2 by using the SIGTRAN M2PA protocol. One use of M2PA signaling
links would be for the low cost longhaul of signaling traffic possibly involving SS7/SS7 protocol conversion.
Two Signaling Gateways would be required, one either side of the IP connection translating between M2PA <-
< MTP2. See Chapter 11, “Worked Configuration Examples” for an M2PA Longhaul configuration example.
Figure 2. M2PA Longhaul Configuration
1.9.9 Default Routing
The Signaling Gateway may be configured to use default routing. This is designed to allow greater routing
flexibility. See Section 6.5, “Configuration Commands” on page 48 for further information regarding default
routing.
1.9.10 Resilience
1.9.10.1 IP Resilience
The Signaling Gateway has four IP ports. These ports may be configured with IP addresses in separate IP
networks to allow greater IP resilience on the Signaling Gateway. IP addresses are configured using the
CNSYS command. The CNSYS command also allows the user to configure the default IP gateway for the unit,
while the IPGWI command allows the user to configure additional IP gateways.
SS7 Links
SS7G2x
SEP
ASP1
M3UA Links
ASP2
Application
Server (AS)
SEP
SG1
SEP
Bearer
Channels
MTP2
Signaling
Links
MTP2
Signaling
Links
SG2
M2PA
Signaling
Links