These are the details of "rating" and "tokens" property in callRecords endpoint.
"feedback": {
"rating": "poor",
"tokens": {
"NoSound": false,
"OtherNoSound": false,
"Echo": false,
"Noisy": true,
"LowVolume": false,
"Stopped": false,
"DistortedSound": false,
"Interruptions": false
}