Vonage API Help Center Vonage API Help Center

Voice Platform

What is False Answer Supervision?
Question What is False Answer Supervision and how can I identify it? App...
Does Vonage offer an IVR service where users can initiate a call and options to key in a response?
Question Does Vonage offer an IVR service where users can initiate a cal...
Can I call Skype and Google Voice numbers?
Question Can I call Skype or Google Voice numbers with the Vonage Voice ...
Does the Vonage API Platform support CLI/Caller ID for my voice calls?
Question Can I use my own CLI/Caller ID for outbound calls? Applies To ...
How does voice pricing work for inbound and outbound calls?
Question How does Voice pricing work for inbound and outbound calls? App...
How many calls can I create per second?
Question What is the maximum number of calls per second allowed? Applies...
What characters can be detected via keypad input?
Question What DTMF characters can be recognized over the Voice API or SI...
Is WebRTC supported with Vonage Voice API?
Question Is WebRTC supported using Vonage Voice API? Applies To WebRTC ...
Which IP addresseses should I allow in order to receive voice traffic from the Vonage API Platform?
Question What IP addresses do I need to add to my firewall if I'm using ...
Can I send fax over the Vonage Voice API?
Question Can I send Fax using Vonage's Voice API? Applies To Voice API ...
How long are call legs stored?
Question How long is the data for call legs stored? Applies To Calls Le...
Can I display my name on the receiving party's phone for outbound calls?
Question Can I have my name displayed on the receiving party's phone for...
How Answering Machine Detection currently works for Voice
  Objective This is a description of how machine detection currently wor...
Is SIP Diversion header supported?
Question Can a SIP Diversion header be added to the forwarded call?  App...
Why does Caller ID show as potential spam?
Question Why does my outbound call CLI show as spam? Applies to Voice c...
Why do I see "SyntaxError: Unexpected token p in JSON at position 1" when creating JWT with the Vonage CLI?
Question Why do I see "SyntaxError: Unexpected token p in JSON at positi...
What types of DTMF are supported?
Question Which DTMF types are supported by the Voice API and SIP? Applie...
Why are call progress events not being received on the Event URL defined in the conversation action NCCO?
Question Why are call progress events not being received for the convers...