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[global]
title "RACH request and channel allocation in GSM RAN"
[entities]
# define the entities in the system (in order)
ms "MS"
bts "BTS"
bsc "BSC"
[messages]
# define the protocol messages in-order
ms bts "RACH burst (8 bit payload)"
bts bsc "RSL CHAN RQD (reason = RACH burst)"
bsc bts "RSL CHAN ACT"
bts bsc "RSL CHAN ACT ACK"
bsc bts "RSL IMMEDIATE ASSIGNMENT CMD"
bts ms "RR IMMEDIATE ASSIGNMENT"
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