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+[entities]
+# define the entities in the system (in order)
+ms
+sgsn
+hlr
+
+[messages]
+# define the protocol messages in-order
+ms sgsn "GMM GPRS ATTACH REQ (TMSI)"
+sgsn ms "GMM IDENTITY req (IMSI)" dashed
+ms sgsn "GMM IDENTITY resp (IMSI)" dashed
+sgsn hlr "MAP SEND AUTH INFO req"
+hlr sgsn "MAP SEND AUTH INFO resp"
+sgsn ms "GMM AUTH AND CIPH req"
+ms sgsn "GMM AUTH AND CIPH resp"
+sgsn hlr "MAP UPDATE GPRS LOCATION req"
+hlr sgsn "MAP INSERT SUBSCRIBER DATA req"
+sgsn hlr "MAP INSERT SUBSCRIBER DATA resp"
+hlr sgsn "MAP UPDATE GPRS LOCATION resp"
+sgsn ms "GMM GPRS ATTACH ACCEPT"