[entities] ms "MS" msc "MSC/VLR" hlr "HLR" [messages] ms msc "CM SERVICE REQUEST" ms msc "Authentication/Ciphering" dashed both ms msc "DTAP FACILITY (INTERR SS REQ)" msc hlr "MAP INTERROGATE SS req" hlr msc "MAP INTERROGATE SS resp" msc ms "DTAP FACILITY (INTERR SS RESP)" hlr msc "MAP INS SUBSCR DATA req" msc hlr "MAP INS SUBSCR DATA resp"