Founded in 1987, Estech Systems, Inc. (ESI) delivers high-performance phone systems designed for growing businesses. As a premier provider of cloud and on-premises VoIP and Access Control solutions, ESI offers innovative, intuitive, and uniquely integrated products that deliver value to our customers and partners. ESI is a privately held corporation with headquarters in Plano, Texas. For more information about ESI and its products, visit www.esi-estech.com. Are you a law firm looking for a cloud-based communications solution? Visit our Cloud Phones for Lawyers at www.esi-legal.com.