M2PA
MTP 2 Peer to Peer Adaptation
M2PA forms part of the Sigtran Architecture along with SUA (SCCP User Adaptation) M3UA (MTP3 User Adaptation) and M2UA (MTP2 User Adaptation). While M2UA provides an MTP3/MTP2 interface boundary M2PA provides functionality for full message handling and network management between SS7 nodes communicating across an IP network. Using this protocol the IP connection between the nodes may be viewed as a fully functional signalling link.