gen_ladder/location_update.lad

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[global]
title "GSM Location Update"
[entities]
# define the entities in the system (in order)
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ms "MS"
bts "BTS"
bsc "BSC"
# msc means MSC + VLR
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msc "MSC/VLR"
hlr "HLR/AUC"
[messages]
# define the protocol messages in-order
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"
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bts ms "RR IMMEDIATE ASSIGN"
ms bsc "MM LOC UPD REQ"
bsc msc "COMPL L3 INFO (LOC UPD REQ)"
msc ms "MM IDENTITY REQUEST"
ms msc "MM IDENTITY RESPONSE"
msc hlr "MAP SEND AUTH INFO req"
hlr msc "MAP SEND AUTH INFO resp"
msc ms "MM AUTH REQ"
ms msc "MM AUTH RESP"
msc hlr "MAP UPD LOC AREA req"
hlr msc "MAP INSERT SUBSCR DATA req"
msc hlr "MAP INSERT SUBSCR DATA resp"
hlr msc "MAP UPD LOC AREA resp"
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msc bsc "BSSMAP (RR CIPH MOD CMD)"
bsc bts "RSL ENCR CMD"
bts ms "RR CIPH MOD CMD"
ms msc "RR CIPH MOD COMPL"
msc ms "DTAP(MM LOC UPD RESP)"