Message Transfer Part Level 3 (MTP3) is an SS7 protocol that resides at layer 3 of the OSI model and performs the SS7 protocol's network functions. Message Transfer Part 2 - User Adaptation Layer (M2UA) provides an SCTP adaptation layer for the seamless backhaul of MTP Level 2 user messages and service interface across an IP network. Message Transfer Part 2 - User Peer-to-Peer Adaptation Layer (M2PA) provides an SCTP adaptation layer for providing an SS7 MTP signaling link over an IP network. The MTP3 Test Suite is designed to act as a malicious signalling point node, which sends exceptional M2UA, M2PA, MTP3 or their combination messages to the tested entity.
Used specifications
Specification
Title
ITU Q.704 (07/96)
Specifications of Signalling System No. 7 - Message transfer part
ITU Q.707 (11/88)
Specifications of Signalling System No. 7 - Testing and maintenance
RFC3331
Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Adaptation Layer
RFC4165
Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Peer-to-Peer Adaptation Layer (M2PA)