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digraph G {
rankdir=TB
labelloc=t; label="Assignment FSM"
WAIT_LCHAN_ACTIVE
WAIT_RR_ASS_COMPLETE
WAIT_LCHAN_ESTABLISHED
WAIT_MGW_ENDPOINT_TO_MSC
terminate [shape=octagon]
gscon [label="conn FSM",shape=box3d]
gscon2 [label="conn FSM",shape=box3d]
lchan [label="lchan FSM\n(new lchan)",shape=box3d]
old_lchan [label="old lchan",shape=box3d]
lchan2 [label="lchan FSM",shape=box3d]
bssap [label="osmo_bsc_bssap.c",shape=box]
invisible [style="invisible"]
invisible -> bssap [label="BSSMAP Assignment Request",style=dotted]
invisible -> old_lchan [style=invisible,arrowhead=none]
bssap -> gscon [label="GSCON_EV_ASSIGNMENT_START\ndata=struct assignment_request",style=dotted]
gscon -> WAIT_LCHAN_ACTIVE [label="assignment_fsm_start()",style=dotted]
WAIT_LCHAN_ACTIVE -> lchan [label="lchan_activate()\nFOR_ASSIGNMENT",style=dotted]
lchan -> WAIT_LCHAN_ACTIVE [label="ASSIGNMENT_EV_\nLCHAN_\nACTIVE,ERROR",style=dotted]
lchan -> WAIT_LCHAN_ESTABLISHED [label="ASSIGNMENT_EV_\nLCHAN_\nESTABLISHED,ERROR",style=dotted]
WAIT_LCHAN_ACTIVE -> WAIT_RR_ASS_COMPLETE
WAIT_RR_ASS_COMPLETE -> old_lchan [label="RR Assignment\nCommand",style=dotted,constraint=false]
lchan -> WAIT_RR_ASS_COMPLETE [label="RR Assignment\nComplete",style=dotted]
WAIT_RR_ASS_COMPLETE -> WAIT_LCHAN_ESTABLISHED
WAIT_LCHAN_ESTABLISHED -> WAIT_MGW_ENDPOINT_TO_MSC [label="TCH"]
WAIT_LCHAN_ESTABLISHED -> terminate [label="non-TCH"]
WAIT_MGW_ENDPOINT_TO_MSC -> terminate
WAIT_MGW_ENDPOINT_TO_MSC -> gscon2 [label="gscon_connect_\nmgw_to_msc()",style=dotted]
gscon2 -> WAIT_MGW_ENDPOINT_TO_MSC [label="ASSIGNMENT_EV_\nMSC_MGW_OK",style=dotted]
terminate -> gscon2 [label="GSCON_EV_\nASSIGNMENT_END",style=dotted]
WAIT_LCHAN_ACTIVE -> WAIT_LCHAN_MODIFIED [label="assignment_fsm_start()\n(mode modify)"]
WAIT_LCHAN_MODIFIED -> lchan2 [label="lchan_mode_modify()\nMODIFY_FOR_ASSIGNMENT",style=dotted]
lchan2 -> WAIT_LCHAN_MODIFIED [label="ASSIGNMENT_EV_\nLCHAN_\nMODIFIED,ERROR",style=dotted]
WAIT_LCHAN_MODIFIED -> WAIT_MGW_ENDPOINT_TO_MSC [label="needs\nvoice\nstream"]
WAIT_LCHAN_MODIFIED -> terminate [label="no change\nin voice\nstream"]
}
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