2017/2016 /2015 / 2017/09/21 WiFi IP-Phone IP542 Latest firmware V.3.21 release 2017/09/21 Automation Facility Management Platform [LockMania] # of users has exceeded over 55k!! 2017/06/06 Private Branding Telecommunication website has renewed 2017/01/27 Smart Lock Active User hits big number 30,000 users! 2017/01/27 API (Application Program Interface) release