When trying to make a call using the Webphone from the JS SDK I face an error.
typeerror: cannot read properties of undefined (reading 'effectivetype')
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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