76 lines
3.6 KiB
Plaintext
76 lines
3.6 KiB
Plaintext
msc {
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hscale = "3";
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ue,hnb,hnbgw,cn;
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ue box hnb [ label = "Radio Channel Establishment" ];
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ue => hnb [ label = "RRC (CM SERV REQ)" ] ;
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hnb => hnbgw [ label = "RUA CONNECT (RANAP Initial UE Msg (CM SERV REQ))" ];
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hnbgw => cn [ label = "SCCP CR (RANAP Initial UE Msg (CM SERV REQ))" ];
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cn >> hnbgw [ label = "SCCP CC" ];
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--- [ label = "Optional retrieval of IMSI (if not given in CM or retrived from VLR by TMSI)" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP DirectTransfer (MM IDENTITY REQ))" ];
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hnbgw => hnb [ label = "RUA DT (RANAP DirectTransfer (MM IDENTITY REQ))" ];
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hnb => ue [ label = "RRC (MM IDENTITY REQ)" ];
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ue >> hnb [ label = "RRC (MM IDENTITY RESP)" ];
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hnb >> hnbgw [ label = "RUA DT (RANAP DirectTransfer (MM IDENTITY RESP))" ];
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hnbgw >> cn [ label = "SCCP DT1 (RANAP DirectTransfer (MM IDENTITY RESP))" ];
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--- [ label = "Mandatory activation of Integrity Protection" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP SecurityModeCommand (IK))" ];
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hnbgw => hnb [ label = "RUA DT (RANAP SecurityModeCommand (IK))" ];
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hnb >> hnbgw [ label = "RUA DT (RANAP SecurityModeResponse (IK))" ];
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hnbgw >> cn [ label = "SCCP DT1 (RANAP SecurityModeResponse (IK))" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP CommonID)" ];
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hnbgw => hnb [ label = "RUA DT (RANAP CommonID)" ];
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--- [ label = "Optional Authentication" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP DirectTransfer (MM AUTH REQ))" ];
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hnbgw => hnb [ label = "RUA DT (RANAP DirectTransfer (MM AUTH REQ))" ];
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hnb => ue [ label = "RRC (MM AUTH REQ)" ];
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ue >> hnb [ label = "RRC (MM AUTH RESP)" ];
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hnb >> hnbgw [ label = "RUA DT (RANAP DirectTransfer (MM AUTH RESP))" ];
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hnbgw >> cn [ label = "SCCP DT1 (RANAP DirectTransfer (MM AUTH RESP))" ];
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--- [ label = "Optional activation of Encryption" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP SecurityModeCommand (IK+CK))" ];
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hnbgw => hnb [ label = "RUA DT (RANAP SecurityModeCommand (IK+CK))" ];
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hnb >> hnbgw [ label = "RUA DT (RANAP SecurityModeResponse (IK+CK))" ];
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hnbgw >> cn [ label = "SCCP DT1 (RANAP SecurityModeResponse (IK+CK))" ];
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cn >> hnbgw [ label = "SCCP DT1 (RANAP DirectTransfer (CM SERV ACC))" ];
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hnbgw >> hnb [ label = "RUA DT (RANAP DirectTransfer (CM SERV ACC))" ];
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hnb >> ue [ label = "RRC (CM SERV ACC)" ];
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ue box ue [ label = "subscriber A dials a call" ];
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ue => hnb [ label = "RRC (CC SETUP)" ];
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hnb => hnbgw [ label = "RUA DT (RANAP DirectTransfer (CC SETUP))" ];
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hnbgw => cn [ label = "SCCP DT1 (RANAP DirectTransfer (CC SETUP))" ];
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cn box cn [ label = "Signalling towards B subscriber via ISUP, SIP, ..." ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP DirectTransfer (CC ALERTING))" ];
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hnbgw => hnb [ label = "RUA DT (RANAP DirectTransfer (CC ALERTING))" ];
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hnb => ue [ label = "RC (CC ALERTING)" ];
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--- [ label = "Assignment of Voice Channel" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP RAB Assign Cmd)" ];
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hnbgw => hnb [ label = "RUA DT (RANAP RAB Assign Cmd)" ];
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hnb >> hnbgw [ label = "RUA DT (RANAP RAB Assign Rsp)" ];
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hnbgw >> cn [ label = "SCCP DT1 (RANAP RAB Assign Rsp)" ];
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cn box cn [ label = "subscriber B picks up the ringing call" ];
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cn => hnbgw [ label = "SCCP DT1 (RANAP DirectTransfer (CC CALL CONF))" ];
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hnbgw => hnb [ label = "RUA DT (RANAP DirectTransfer (CC CALL CONF))" ];
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hnb => ue [ label = "RRC (CC CALL CONF)" ];
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cn box ue [ label = "Voice channel open" ];
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ue box ue [ label = "subscriber A hangs up" ];
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ue => hnb [ label = "RRC (CC DISCONNECT)" ];
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hnb => hnbgw [ label = "RUA DT (RANAP DirectTranfer (CC DISCONNECT))" ];
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hnbgw => cn [ label = "SCCP DT1 (RANAP DirectTranfer (CC DISCONNECT))" ];
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cn box hnb [ label = "RAB Release or Iu Release" ];
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}
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