What does a textbook case for deploying a Virtual Private Network with Voice over IP look like? Take a rapidly growing global business with a mishmash of legacy network systems, add the need for business-critical collaborative communications, and you’ve got a snapshot of what Promethean, a global provider of advanced teaching and learning tools, was faced with not too long ago.

Fast-forward to today: With a fully managed VPN and VoIP from AT&T in place, the company has a unified, stable and scalable network, ERP and CRM systems working seamlessly worldwide, and high-definition videoconferencing that enhances collaboration. And all of this on an international scale: from the U.S. to China, Germany to Bahrain.