Prebuilt and ready to deploy with a 4 concurrent call license (Std 4) onboard and the ability to license for up to 16 concurrent calls. Despite the small form factor, this device runs the complete Vodia PBX software on a state-of-the-art embedded server. Never before has it been so easy and inexpensive to have a professional phone system for your business. And not just any phone system, but the rock-solid feature-rich world class Vodia PBX. Just connect it to your router.