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SS7 Recommendations R-1. Use the IP protocol stack “M2UA over SCTP over IP” for ETS SS7 call signaling between the SG and MGC Contrary to using M3UA, M2UA allows retention of MTP3 with its existing congestion priority treatment function E.g., GETS IAMs at priority 1; POTS IAMs at priority 0 Facilitates reuse of existing STP application software by keeping MTP3 and application level software intact and unchanged Assumed signaling for the baseline telephony application - nothing special for ETS |