Vonage API Help Center Vonage API Help Center

Voice API

Can I send fax over the Vonage Voice API?
Question Can I send Fax using Vonage's Voice API? Applies To Voice API ...
Can I call multiple recipients in one API request?
Question Can I make multiple calls at the same time with Voice API? Appl...
Is a completed event sent to my webhook for every call?
Question Does every call receive a completed event? Applies To Complete...
How can I use Voice API for languages that are not supported?
Question Can I use my own audio files instead of using the Talk action? ...
Do I have to specify the file type in my audio file?
Question Do I have to include .mp3 or .wav in my audio file URL? Applies...
How long is my JSON Web Token valid for?
Question When does my JWT expire? Applies To JSON Web Token Token Expir...
What happens if the audio file download request fails?
Question What happens if the audio file download request fails? Applies ...
What happens if the NCCO download request fails?
Question Will the Voice API retry the NCCO download request if my answer...
API Request failed with 404 response when trying to Modify an Active Call or retrieving a call or conversation details
Symptom When trying to modify an active call or when listing or retrievi...
How do I forward additional numbers to an existing application?
Question How can I forward number to existing applications? Applies To ...
Can I use Connect with fallback NCCO with Machine Detection?
Question If a call goes to answer machine, can I hangup and fallback to ...
How can I edit the numbers forwarded to my applications for the Voice API?
Objective Setting up or editing the numbers forwarded to applications fo...
How do I create and manage my applications for the Voice API?
Objective Creating and managing Voice applications. Applies To Voice AP...
What kind of prerecorded audio files can I use with Voice API?
Question Which file types can I use for prerecorded audio with the Voice...
When do you download my file when using Voice API?
Question When are the NCCO and audio file for a stream downloaded? Appli...
Can I transcribe my calls with the Voice API?
Question Can Voice API transcribe my calls? Applies To Voice API Speech...
Is WebRTC supported with Vonage Voice API?
Question Is WebRTC supported using Vonage Voice API? Applies To WebRTC ...
How do I record a certain part of the call using Voice API?
Objective Setting up call recording parameters to record an entire call ...
How do I retrieve my Voice API recordings?
Objective Downloading Voice API recordings. Applies To Voice API Call R...
How does the answering machine detection parameter work?
Question How accurate is answering machine detection? Applies To Voice ...