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[global]
title "Mobile Originated (MO) call: Roaming case"
[entities]
ms "MS (Caller)"
bts "BTS"
bsc "BSC"
vmsc "MSC/VLR"
hlr "HLR/AUC"
b "B (Called)"
[messages]
ms bts "L1 RACH burst"
bts bsc "RSL CHAN RQD"
bsc bts "RSL CHAN ACT REQ"
bts bsc "RSL CHAN ACT ACK"
bsc bts "RSL IMM ASS CMD"
bts ms "RR IMMEDIATE ASSIGN"
ms bsc "CM SERVICE REQ"
bsc vmsc "COMPL L3 INFO (CM SERV REQ)"
vmsc hlr "MAP SEND AUTH INFO req"
hlr vmsc "MAP SEND AUTH INFO resp"
vmsc ms "MM AUTH REQ"
ms vmsc "MM AUTH RESP"
vmsc bsc "BSSMAP CIPH MOD CMD"
bsc bts "RSL ENCR CMD"
bts ms "RR CIPH MOD CMD"
ms vmsc "RR CIPH MOD COMPL"
ms vmsc "CC SETUP[MSISDN]"
vmsc b "ISUP IAM[MSISDN]"
b vmsc "ISUP ACM"
vmsc ms "CC ALERTING"
b vmsc "ISUP ANM"
vmsc ms "CC CALL CONFIRMED"
ms b "Open Voice Channel" both dashed
ms vmsc "CC DISC IND"
vmsc b "ISUP REL"
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