get https://rest-ww.telesign.com/capability//
Use this action to check capability of a phone number to use the specified channel.
To enable this feature for your account, contact our Customer Support Team.
General requirements
- Authentication: Basic (easiest to implement) or Digest
 - Encoding: Accepts only UTF-8 unicode characters as inputs.
 - Responds with: 
application/json - Rate limit: Default rate limits by product