Designed with affordability and scalability in mind, the NEC DSX Phone System is sized right – from the economical DSX-40 to the DSX-80/160. All DSX-80 cards can be migrated to the DSX-160. Even when growing from the DSX-40, your investment in IntraMail, programming, telephones, and other station equipment is retained. Since DSX is simple to install and easy to use, the expenses of configuration, programming, and post-installation training are minimized. Additionally, the core DSX call processing features are mature, efficient, and reliable – yet intuitive and easy to use.