R Tone by CCSIDD is an app designed to utilize SIP to deliver phone calls through a VOIP network. It is a soft client that is customized to work with CCS VOIP network, delivering the highest voice quality via 3G/4G and WIFI data network. You will be able to make calls through it via the data network with the lowest costs in comparison to the traditional mobile phone network. To register with us, simply call us for more details. FEATURES: - Echo cancellation capability - Preset codec for best