There is a section in response called result. This value returns the status description of the call operation.

A missed call will have the result value of “Missed” .

Other values are In Progress, Voicemail, Reply etc.

Check the API response details:

https://developers.ringcentral.com/api-reference/Call-Log/readUserCallRecord

Also refer: https://stackoverflow.com/questions/52051334/does-the-ringcentral-call-log-api-return-a-missed-value

And also this excellent article by @Phong Vu :

https://medium.com/ringcentral-developers/visualize-your-business-communications-history-2c81f85c324a

@vikas p If you see the docs carefully there is an Enum value: Inbound, Outbound

So, yes this is what the direction is explained in docs