How can I calculate non-answered calls through the API?

Question

I want to use the Incremental Calls Export endpoint to extract data about non-answered calls in Talk. Then, I want to compare that data to match the Non-answered calls metric in Explore. How can I do that?

Answer

Zendesk marks calls as non-answered in the raw data received through the Incremental Calls Export API when all of the below conditions are true.

JSON object	Condition	JSON value
direction	is	inbound
completion_status	is	completed
talk_time	is	0
voicemail	is	FALSE
ivr_action	is not	phone_number OR textback OR voicemail
overflowed	is	FALSE