The solution, which includes D2's mCUE 4G software client, InterDigital's Smart Access Manager client and Alcatel-Lucent's IP Communications solution, gives service providers optimized and interoperable VoLTE, RCS and ePDG-based secure VoWiFi functionality to more quickly and efficiently commercialize advanced IP-based communications capabilities over both mobile cellular and Wi-Fi networks. IP-based communications such as RCS, VoLTE (IR.92), secure VoWiFi, and IR.94 video calling can be seamlessly combined with traditional GSM CS and SMS communications to deliver on the GSMA's "Green Button Promise."read more