Play DTMF into a call
This code snippet plays DTMF tones into the specified call.
Example
Replace the following variables in the example code:
| Key | Description |
|---|---|
VOICE_CALL_ID | The UUID of the call leg. |
VOICE_DTMF_DIGITS | Digits representing the DTMF tones that will be played into the call. |
Prerequisites
Execute the following command at your terminal prompt to create the JWT for authentication:
Run your code
Save this file to your machine and run it:
Prerequisites
Create a file named play-dtmf-into-a-call.js and add the following code:
Run your code
Save this file to your machine and run it:
Prerequisites
Add the following to build.gradle:
implementation 'com.vonage:server-sdk-kotlin:2.1.1'Create a file named PlayDtmfIntoCall and add the following code to the main method:
Run your code
We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:
apply plugin: 'application'
mainClassName = project.hasProperty('main') ? project.getProperty('main') : ''Run the following gradle command to execute your application, replacing com.vonage.quickstart.kt.voice with the package containing PlayDtmfIntoCall:
Prerequisites
Add the following to build.gradle:
implementation 'com.vonage:server-sdk:9.3.1'Create a file named SendDtmfToCall and add the following code to the main method:
VonageClient client = VonageClient.builder()
.applicationId(VONAGE_APPLICATION_ID)
.privateKeyPath(VONAGE_PRIVATE_KEY_PATH)
.build();Write the code
Add the following to the main method of the SendDtmfToCall file:
var response = client.getVoiceClient().sendDtmf(VOICE_CALL_ID, VOICE_DTMF_DIGITS);
System.out.println(response);Run your code
We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:
apply plugin: 'application'
mainClassName = project.hasProperty('main') ? project.getProperty('main') : ''Run the following gradle command to execute your application, replacing com.vonage.quickstart.voice with the package containing SendDtmfToCall:
Prerequisites
Prerequisites
Run your code
Save this file to your machine and run it:
Prerequisites
Run your code
Save this file to your machine and run it:
Prerequisites
Run your code
Save this file to your machine and run it:
Try it out
When you run the code a series of DTMF tones is played into the call identified with the specified UUID.
Further Reading
- Conference Calling - This guide explains the two concepts Vonage associates with a call, a leg and a conversation.