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id: 54139d94-dc4e-47c2-bc47-9b0f5f868dcd
title: CallDetect.FaxParams.FaxTone
slug: /dotnet/reference/calling/call-detect-fax-tone
max-toc-depth: 3
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# SignalWire.Relay.Calling.CallDetect.FaxParams.FaxTone

This is an enumeration that represents the possible fax tones.

### Values

| Value | Description   |
| ----- | ------------- |
| `CED` | The CED tone. |
| `CNG` | The CNG tone. |