Sending voice and video in real-time over the Internet Protocol has gone from being a simple smart technique for saving money. On-phone bills to be an indispensable tool for collaboration and productivity. Unified communications. Previously limited to combining voice calls and Internet faxes on a single network platform to replace expensive PBX systems. Now incorporate VoIP and video, mobility. Instant messaging, presence, services, and more. All in one environment cohesive and easy to manage, scalable, secure, resilient, convenient, and