Today, utilities face the challenge of using information and communication networks more effectively to manage the demand, generation, transmission, and distribution of their commodity services. Currently, increases in communications traffic are driven by applications such as interval metering; operational systems for managing power generation, outages, and flows; two-way communications for energy efficiency initiatives and other customer programs; transmission interconnectivity; and network security monitoring and reporting. This means that utilities need to upgrade just to keep their existing communications networks fully functional and compliant. Telesail provide different solution to help utility to migrate from TDM/SDH/SONET-based communications networks to Ethernet/IP-based ones is spurred by a shared set of drivers – smart grid automation.