question

Mary Jelks avatar image
Mary Jelks asked Phong Vu answered

I am unable to send a fax. I get this error message: invalid phone number regardless of which fax number I choose. What might be causing the problem?

errors
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1 Answer

Phong Vu avatar image
Phong Vu answered

Some code pls!

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Developer sandbox tools

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:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys