Unknown name \"model\" at 'config': Cannot find field - google-cloud-speech

Question

I'm trying to use Google Cloud speech (v1beta1) to analyse phone calls. I can't find the "model" parameter in the C# client library, so I'm constructing my own json message and sending it. This works:
{
"audio": {
"content": "UklGRiavCAA+P8QAAgA....."
},
"config": {
"languageCode": "nl-NL"
}
}
But when I add the phone_call model like this:
{
"audio": {
"content": "UklGRiavCAA+P8QAAgA....."
},
"config": {
"languageCode": "nl-NL",
"model": "phone_call"
}
}
I get an error:
{
"error": {
"code": 400,
"message": "Invalid JSON payload received. Unknown name \"model\" at 'config': Cannot find field.",
"errors": [
{
"message": "Invalid JSON payload received. Unknown name \"model\" at 'config': Cannot find field.",
"domain": "global",
"reason": "badRequest"
}
],
"status": "INVALID_ARGUMENT"
}
}
Why? Accoding to the documentation I believe my request is valid?
Edit: to answer my own question: turns out I was using a wrong url. The correct url is: https://speech.googleapis.com/v1p1beta1/speech:recognize.

Answer 1

I'm sorry to be the bearer of bad news, but it looks like the phone call model is only supported for en-US, and your language is nl-NL:
https://cloud.google.com/speech-to-text/docs/basics
Scroll down to "Selecting Models". "Command and Search" and "Default" are both listed as available for all languages, but "video" and "phone call" are listed as "en-US only".