| Harald Welte | 732443c | 2018-10-05 23:42:14 +0200 | [diff] [blame] | 1 | msc { |
| 2 | hscale=2; |
| 3 | UE, ENB [label="eNodeB"], BSS, MME, VLR [label="MSC/VLR"], HSS [label="HSS/HLR"]; |
| 4 | |
| 5 | UE => MME [label="NAS Extended Service Request"]; |
| 6 | ENB <= MME [label="S1-AP UE Context Mod Req with CSFB"]; |
| 7 | ENB => MME [label="S1-AP UE Context Mod Resp"]; |
| 8 | UE <= ENB [label="NACC (Network Assisted Cell Change)"]; |
| 9 | ENB => MME [label="S1-AP S1 UE Context Release Req"]; |
| 10 | UE box MME [label="S1 UE Context Release"]; |
| 11 | |
| 12 | UE box HSS [label="UE changes RAT then LA and/or RA update"]; |
| 13 | UE <=> HSS [label="PS Suspend (TS 23.060)"]; |
| 14 | |
| 15 | UE => BSS [label="CM SERV REQ"]; |
| 16 | BSS => VLR [label="COMPL L3 (CM SERV REQ)"]; |
| 17 | UE <=> VLR [label="Normal 2G Voice Call"]; |
| 18 | } |