AWS connect Deskphone CCP error for Missed call

Agent taking inbound calls through SCV based CCP via Deskphone. Sometimes his call getting missed very frequently. When i am checking logs found below details in logs,

Available--> Pending Busy(16.17.35)---> Failed Connect Agent(16.17.57)--> Offline. Contact Duration : 22 sec

</ ``

"type":"error"
"name":"FailedConnectAgent"
"type":"voice"
"state":{
"type":"error"
"timestamp":"XXXX"
}
"state":{
"type":"connected"
"timestamp":"XX"
}

``

whether Missed call count of 20sec common for desktop based CCP as well. For deskphone and softphone any change noted in reporting as like, as i am not seen Missed call event name in logs ?