-This application is a business softphone that provides business phone functions such as extension / outside line calls by registering / connecting to a business phone.-For other detailed functions and usage, please refer to the instruction manual.【Important Notices】・ To use this application, SmartNet community αZX main unit, license, and Wi-Fi access point are required.-You can try up to 2 units of this application without a license. If you want to use 3 or more units, you need to register a license for SmartNet community αZX.・ This application cannot be used on the go or at home. You can use it by connecting to Wi-Fi in the local network to which the business phone belongs.