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