[entities]
# define the entities in the system (in order)
ms
msc
smsc

[messages]
# define the protocol messages in-order
ms	msc	"Establish Connection via BTS/BSC" dashed
ms	msc	"Optional authentication + ciphering" both
ms	msc	"CP-DATA containing RP-DATA (SMS SUBMIT)"
msc	smsc	"MNSMS-EST-IND (RP-DATA)"
msc	ms	"CP-ACK for previous CP-DATA"
smsc	msc	"MNSMS-DATA-REQ (RP-ACK)"
msc	ms	"CP-DATA containing RP-ACK"
ms	msc	"CP-ACK for previous CP-DATA"