Receive fax callback
When a fax is received, Phaxio will post information about the fax (including any metadata received from PhaxCodes) along with a PDF of the fax to your receive fax callback URL, if one is available. You can set up a receive callback URL on the callbacks page in the web console, or define URLs individually per phone number.
If you've specified a global callback URL on the callbacks page and also specify one on a phone number, the phone number's callback URL will override the global one.
|is_test||boolean||Is this callback as a result of a test call?|
|direction||string||The direction of the fax (in this case, 'received'). Useful if you use the same callback URL for both sent and receive confirmations.|
|fax||Fax Object||The job's fax object.|
|metadata||string||The metadata associated with the PhaxCode that you specified.|