Role of SIGTRAN

SIGTRAN is a working group of the IETF, addressing packet-based Public Switched Telephone Network (PSTN) signaling over IP networks. A set of signaling transport protocols has been developed out of the group’s work. For the purposes of this document, the protocols are collectively called the “SIGTRAN” protocols or suite.

The SIGTRAN architecture used by Oracle Communications includes several IETF protocols. Figure 2-1 illustrates their location in the protocol stack:

• MTP2 User Peer-to-Peer Adaptation Layer (M2PA) protocol; RFC 4165
• MTP3 User Adaptation Layer (M3UA) protocol; RFC 4666
• SCCP User Adaptation Layer (SUA) protocol; RFC 3868
• Stream Control Transmission Protocol (SCTP)protocol; RFC 4960

Figure 2-1 SIGTRAN Protocols Used by Oracle Communications