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+digraph G {
+rankdir=TB;
+
+ invisible [style=invisible]
+ invisible -> mo [label="Measurement Report\nincluding neighbor\nBSS ARFCN",style=dashed]
+ mo [label="inter-BSC MO HO",shape=box];
+ msc [label="msc",shape=box3d];
+ new_bsc [label="new BSC",shape=box3d]
+ lchan [label="lchan",shape=box3d]
+ term [label="terminate",shape=box];
+
+ mo -> WAIT_HO_COMMAND [label="handover_start()"]
+ WAIT_HO_COMMAND -> msc [label="BSSMAP Handover\nRequired",style=dashed]
+ msc -> new_bsc [label="BSSMAP Handover\nRequest",style=dashed]
+ new_bsc -> msc [label="BSSMAP Handover\nRequest Ack",style=dashed]
+ msc -> WAIT_HO_COMMAND [label="BSSMAP Handover\nCommand",style=dashed]
+
+ WAIT_HO_COMMAND -> lchan [label="RR Handover\nCommand\nfrom new BSC",style=dashed]
+
+ WAIT_HO_COMMAND -> WAIT_CLEAR
+ msc -> WAIT_CLEAR [label="BSSMAP Clear Command",style=dashed]
+
+ WAIT_CLEAR -> term
+
+
+}