Transferring your non-RingCentral telephone numbers can by transferred to RingCentral by doing the Number Transfer
request through the online account. You can submit documentary requirements or view the status of your Number Transfer request through the online account. IMPORTANT: If you are transferring a number with SMS feature, your service may be interrupted for 72 hours on completion of the number transfer request.
Once you have finished submitting the requirements, you can check the status of your number transfer request online by following the steps below:
Go to Admin Portal > Phone System > Phone Numbers,
and then select the Transferred and Vanity Tab
NOTE: Allow 5-15 business days to transfer your number.