I checked the API reference for fax here and were able to send fax .
But searching for curl command to do the same. pls help
Have you checked this article: https://medium.com/ringcentral-developers/use-curl-to-access-ringcentral-platform-api-d4710fe68fa4
It will help you with curl commands for fax
Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.
Download RingCentral Phone for Desktop:
Tip: switch to the "sandbox mode" before logging in the app:
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