l Function
[ An MS shall perform a GPRS Attach to
the SGSN in order to obtain access to the GPRS services. If the MS is connected
via a GSM radio, it shall perform a GSM GPRS Attach procedure. If the MS is
connected via a UMTS radio access network, it shall perform a UMTS GPRS Attach
procedure
l Results
after any attach procedure
[ SGSN
get subscriber data from HLR
[ HLR
recorded the MS’s serving SGSN number
[ SGSN
and MS create MM context for the MS
l MS
can request Session Management services
