ESI eSIP 20X is a powerful feature-rich business phone system that is designed for small business and offers a wide variety of on-premise, hybrid, and hosted solutions.  This system can support up to 20 users,10 concurrent calls, and up to 83 hours of voicemail.  In addition, the 20X combines advanced features such as Voicemail to Email, Auto Attendant, and Call Recording, as well as, other highly-differentiated applications to create a solution that is as easy to use and manage as it is scalable and flexible.  When away from the office, mobile applications are available for  iOS and Android that let you use your smart device on your ESI phone system.  The ESI eSIP 20X provides a compact and affordable solution that gives your organization flexibility whether connecting from a workstation, laptop or from an iPhone or Android in the palm of your hand.