Pass the API key in the Authorization header, You need to put Token keyword before the API key. e.g. 'Authorization: Token
The number that you want to call
"+1234567890"
"d949f13f-40d2-4e48-ac86-b66633070603"
Overriding params set in the voice agent's greeting message or preamble. Send when using voiceAgentId only.
Send agentDetails instead of voiceAgentId and params.