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@@ -285,6 +285,9 @@ comprised of M3UA over SCTP over IP.
M3UA is specified in <<ietf-rfc4666>>.
+M3UA is the SIGTRAN variant chosen by 3GPP for A, IuCs and IuPS
+interfaces over IP.
+
===== SCCP User Adaptation (SUA)
SUA basically "chops off" everything up to and including the SCCP