GMS call back CPD detection

hi experts,

I have GMS call back solution and I am using Genesys provided Plugin ( SCXML code) for treatments.
I have enabled the plugin using _plugin option in GMS services.

In the same service when i set _cpd = true I get the _call_state = ‘5’ , Document doesnt state what does it mean. it only have descriptions for below code.

Ok=0 (human answer)
• NoAnswer=7
• SilDetected=8
• AnsweringMachineDetected=9
• FaxDetected=17

IF i set _cpd = false then every time HUMAN voice is detected if if the call is landed to Voice mail.

Does anyone know what does _call_State = 5 means?

Not sure if CPD is working properly here and how to verify it ?

5 CallStateRemoteRelease