Does anyone know if the RingCentral API (getSubscription / Presence) is down? I also submitted a help ticket, but didn't get a response.
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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