post https://rest-ww.telesign.com/v1/verify/auto/voice/initiate
Use this endpont to initiate verification of the specified phone number using the Telesign App Verify API.
To add this product to your account, contact a Telesign expert. This product is available for Full-service accounts only.
General requirements
- Authentication: Basic (easiest to implement) and Digest
 - Encoding: Accepts only UTF-8 encoded unicode characters as inputs
 - Accepts: 
application/x-www-form-urlencoded - Required headers: 
Content-Type - application/x-www-form-urlencoded - Rate limit: Default rate limits by product