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[entities]
# define the entities in the system (in order)
ms		"MS"
sgsn		"SGSN"
hlr		"HLR"

[messages]
# define the protocol messages in-order
ms	sgsn	"GMM GPRS ATTACH REQ (TMSI)"
sgsn	ms	"GMM IDENTITY req (IMSI)" dashed
ms	sgsn	"GMM IDENTITY resp (IMSI)" dashed
sgsn	hlr	"MAP SEND AUTH INFO req"
hlr	sgsn	"MAP SEND AUTH INFO resp"
sgsn	ms	"GMM AUTH AND CIPH req"
ms	sgsn	"GMM AUTH AND CIPH resp"
sgsn	hlr	"MAP UPDATE GPRS LOCATION req"
hlr	sgsn	"MAP INSERT SUBSCRIBER DATA req"
sgsn	hlr	"MAP INSERT SUBSCRIBER DATA resp"
hlr	sgsn	"MAP UPDATE GPRS LOCATION resp"
sgsn	ms	"GMM GPRS ATTACH ACCEPT"