index.md

Vonage NCCO Examples

Welcome! Here you will find some examples of NCCOs (Nexmo Call Control Objects) that you can use with the Vonage Voice API. We've split the examples into sections so have a browse and if you don't find what you're looking for, open an issue (pull requests are welcome too!).

Index:

• Talking
• Telephone
• Record
• Audio
• Further Reading

Talking

These examples use the talk action, producing text-to-speech output.

• talk.json for simple spoken words
• text-to-speech.json also specifies a language
• ssml.json has an example with some SSML (Synthesized Speech Markup Language) for expression.
• long-tts.json specifies a language and a message that is repeated 10 times using the loop property.

Telephone

• connect-phone.json to connect the answered call to another number
• connect-to-app.json to connect the answered call to an application using our Conversation API
• conference.json to add every user to the same conference
• dtmf-input.json if you want to get the user to enter some digits with their telephone keypad
• asr-input.json if you need to retrieve the caller's speech in text form
• transfer.json to share a message when a transfer action has finished

Record

• record.json will record your call. Take a look at the code snippets for examples of how to authenticate and download the finished recording after the call.

Audio

• silent-loop.json streams a mp3 file with no sound, on a loop. Useful for keeping a call active while waiting for another event to occur.

Further Reading

Still looking for more? Try these:

• Getting Started with Voice API on the Vonage API Developer Platform
• NCCO Reference for all the details on all the available parameters