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Noise suppression tutorial

In this tutorial, you'll learn how to enable noise suppression for the Voice API and TeXML calls.

Voice API​

The noise suppression can be enabled for the Voice API calls in the following way:

    curl --request POST \
    --url https://api.telnyx.com/v2/calls/${call_control_id}/actions/suppression_start \
    --header 'Accept: application/json' \
    --header 'Authorization: Bearer ${API_KEY} \
    --header 'Content-Type: application/json' \
    --data '{
        "direction": "inbound"
    }'

The only parameter required for the request is direction which can have one of the following options: inbound | outbound | both.

Please be aware that the charge is applied for each direction separately.

The noise suppression can be stopped at any time in the following way:

    curl --request POST \
    --url https://api.telnyx.com/v2/calls/${call_control_id}/actions/suppression_stop \
    --header 'Accept: application/json' \
    --header 'Authorization: Bearer ${API_KEY} \
    --header 'Content-Type: application/json' \
    --data '{}'

TeXML​

In TeXML there is a dedicated verb for enabling the noise suppression on the call.

<Response>
    <Start>
        <Suppression direction="inbound"/>
    </Start>
...
    <Stop>
        <Suppression/>
    </Stop>
</Response>

On this page​