M3UA

M3UA, the MTP3 user adaptation layer: the four ways it is deployed, from extending an MTP3 link to replacing MTP3 and MTP2 outright.

The M3UA (Message Transfer Part 3 User Adaptation Layer) layer can be used like this:

• extend an MTP3 link

• replace the MTP3 and MTP2 layers entirely

• do a signaling gateway (SG) with a shared point code

• do a signaling gateway (SG) to another signaling gateway with a shared point code

Here are some examples:

FIGURE 1:

m3ua_sg_setup.png

FIGURE 2:

m3ua_ipsp_setup.png

TelcoBridges and M3UA

TelcoBridges supports M3UA as part of its support for SIGTRAN.

Sigtran use cases

You can see some use cases for Sigtran here: Sigtran use cases and M3UA Configurations

Configuration

• M3UA configuration v3.0

Other versions

• M3UA configuration v3.2

References

• Article at Protocols.com

• Wikipedia article

• RFC 4666 Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA)