---
title: "Send DTMF tones to an active call"
method: POST
path: "/voice/conversation/{messageId}/dtmf"
---

# Send DTMF tones to an active call

`POST /voice/conversation/{messageId}/dtmf`

## Path parameters

- `messageId` string, required

## Headers

- `Authorization` string, required
- `Content-Type` string, required

## Request body

- object
  - `dtmf` string, required — A string with the dtmf tones to be sent. Valid characters are given by the regular expression: [A-D0-9#*,wW]+. The ',' and lowercase 'w' characters represents a half-second pause into the DTMF sequence, while the uppercase 'W' character represents one-second pause.

## Response `200`

200

- object
  - `messageId` string
  - `message` string
  - `createdAt` string

## Other responses

- `400` — 400

---

[API](https://skmtc.net/routee/apis/auth.md) · [All operations](https://skmtc.net/routee/apis/auth/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/routee/auth/versions/5cef04e8f7d8/schema)