No, you don't have to, but you can if you want to. The UniTel Voice Virtual Office Phone System is a virtual phone system that works with your existing phones (i.e., cell phones, landline, or VoIP). Calls that come into your Virtual Office Number can ring an app on your iPhone or Android phone, or forward to whatever existing phone numbers, extensions, or voicemail box you designate. 

We now offer the ability to add an IP-phone or a softphone to your account for only $9.99/employee extension.