You need to port over your existing phone number to replace your landline with a VoIP phone. To do this, your current phone number must remain in service before you start the porting process. So make sure you don’t cancel your landline until the number port has been completed. You’ll also need to choose a VoIP phone service that supports number porting. For example, Nextiva and RingCentral both offer free porting so you can keep your landline number. Depending on your VoIP provider, you may have the option to continue using your existing desk phones—as long as they’re VoIP-enabled. If they’re not VoIP-enabled, you can get a converter or simply purchase new phones directly from your provider. Otherwise, you can use VoIP technology to make and receive calls from your smartphone or computer, which eliminates the need for you to use traditional landline hardware.