M2PA Protocol

M2PA is used primarily to replace B-, C-, and D-links. When used with A-links, M2PA connects to Service Switching Points, Signaling Control Points, Home Locater Registers and other endpoints. M2PA is a direct replacement for channelized TDM circuits because it provides specific controls for assurance of in-sequence delivery of messages. As such, M2PA is used to connect points that pass call-related data that is time-sensitive, such as ISUP calling data.

Congestion procedures conform to those specified by the ANSI/ITU standards.

Figure 2-1 M2PA Network