M3UA

The M3UA (Message Transfer Part 3 User Adaptation Layer) layer can be used in either of two ways:

• extend an MTP3link
• replace the MTP3 and MTP2 layers entirely.

FIGURE 1:

FIGURE 2:

When used in Toolpack, the M3UA layer can be configured to interface with either a NIF or ISUP/SCCP layer.

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
• M3UA configuration v2.10
• M3UA configuration v2.9
• M3UA configuration v2.8

• M3UA configuration v2.7

References

• Article at Protocols.com
• Wikipedia article
• RFC 4666 Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA)