Versioning (Interactions API)
Version headers are required for all Interactions API requests.
Specify the version of the API in the accept
 header parameter using the RFC 2616 protocol.
For example, to use version 1 of the API, set the accept
 header parameter to application/vnd.newvoicemedia.v1+json
:
Accept: application/vnd.newvoicemedia.v1+json