The ESI eSip Evolution 50X is a compact and full-featured business phone system that offers on-premise, hybrid, and hosted solutions.  The advanced 50x is capable of supporting FXS, FXO/PSTN, Cellular connectivity, and SIP trunks.  By allowing the installation of up to four modules, the system provides VoIP communications for up to 50 users, 25 concurrent calls, and up to 83 hours of voicemail.  Whether in the office, on the road, or working from home, this system empowers your employees with a faster, better, and always-on continuous collaboration solution.  The 50X is able to function across on-premise, hybrid, or cloud environments to deliver the flexibility, reliability, and scalability to stay competitive.  ESI will power your business with a communications experience that is built for the work world of today and for the challenges of tomorrow.