I want to check if the phone number type is set to fax only or voice only via the API but I can't see any options on the documentation. Thanks
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:
7 People are following this question.