Dialogic® SS7G2x Signaling Server SGW Mode User Manual Issue 4
Figure 1. M3UA Backhaul Configuration
SS7 Links
SEP | SS7G2x |
|
M3UA Links
ASP1
Application
Server (AS)
ASP2
1.9.8M2PA 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
MTP2
Signaling
Links 
SEP
SG1
M2PA
Signaling
Links
SG2
MTP2
Signaling
Links
SEP
Bearer
Channels
1.9.9Default 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.
1.9.10Resilience
1.9.10.1IP 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.
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