M2PA

The M2PA (Message Transfer Part 2 Peer-to-Peer Adaptation Layer) is used to replace the MTP2 layer entirely. In contrast with M2UA, M2PA does not include MTP2 links between the 2 point codes. However, it still requires the MTP3 layer.

The following figures show 2 different configurations of M2PA:

FIGURE 1:

FIGURE 2:

The first figure includes a setup featuring the signaling gateway as an STP from the SS7 point of view.

TelcoBridges and M2PA

TelcoBridges supports M2PA as part of its SIGTRAN implementation.

Configuration

• SS7-M2PA configuration v2.10
• SS7-M2PA configuration v2.9
• SS7-M2PA configuration v2.8
• SS7-M2PA configuration v2.7

References

• Article at Protocols.com
• RFC 4165 Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Peer-to-Peer Adaptation Layer (M2PA)