About the Author: Kerry got involved with telephony while running his own IT business. After discovering open-source systems like Asterisk, he began writing technical articles and books on the topic. With a long history in the IP PBX space from being an installer and integrator to being the project manager and Community Director for the trixbox CE project, Kerry joined the 888VoipStore team at the beginning of 2009. As the VP of Strategic Initiatives for 888VoipStore, Kerry works to help resellers to improve their businesses and bottom line by providing a rich resource of information that many have come to trust and rely upon.