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{
"states": [
"Calling",
"Proceeding",
"Completed",
"Confirmed",
"Terminated"
],
"initial_state": "Calling",
"final_states": [
"Terminated"
],
"transitions": [
{
"from": "Calling",
"event": "timeout Timer A",
"action": "send INVITE",
"to": "Calling"
},
{
"from": "Calling",
"event": "receive 1xx",
"action": "send 1xx to TU",
"to": "Proceeding"
},
{
"from": "Calling",
"event": "receive 2xx",
"action": "send 2xx to TU",
"to": "Terminated"
},
{
"from": "Calling",
"event": "timeout Timer B or Transport Error",
"action": "inform TU",
"to": "Terminated"
},
{
"from": "Calling",
"event": "receive 300-699",
"action": "send ACK, send response to TU",
"to": "Completed"
},
{
"from": "Proceeding",
"event": "receive 2xx",
"action": "send 2xx to TU",
"to": "Terminated"
},
{
"from": "Proceeding",
"event": "receive 300-699",
"action": "send ACK, send response to TU",
"to": "Completed"
},
{
"from": "Proceeding",
"event": "receive 1xx",
"action": "send 1xx to TU",
"to": "Proceeding"
},
{
"from": "Proceeding",
"event": "receive INVITE",
"action": "send response",
"to": "Proceeding"
},
{
"from": "Proceeding",
"event": "receive Transport Error",
"action": "inform TU",
"to": "Terminated"
},
{
"from": "Completed",
"event": "timeout Timer D",
"action": "",
"to": "Terminated"
},
{
"from": "Completed",
"event": "receive 300-699",
"action": "send ACK",
"to": "Completed"
},
{
"from": "Completed",
"event": "receive Transport Error",
"action": "inform TU",
"to": "Terminated"
},
{
"from": "Completed",
"event": "receive ACK",
"action": "",
"to": "Confirmed"
},
{
"from": "Confirmed",
"event": "timeout Timer I",
"action": "",
"to": "Terminated"
},
{
"from": "Proceeding",
"event": "receive 101-199 from TU",
"action": "send response",
"to": "Proceeding"
},
{
"from": "Proceeding",
"event": "receive 300-699 from TU",
"action": "send response",
"to": "Completed"
},
{
"from": "Completed",
"event": "timeout Timer G",
"action": "send response",
"to": "Completed"
},
{
"from": "Completed",
"event": "receive INVITE",
"action": "send response",
"to": "Completed"
},
{
"from": "Completed",
"event": "timeout Timer H or Transport Error",
"action": "inform TU",
"to": "Terminated"
}
]
} |