... 2.4G Wireless PBX System is based on the digital PBX System, which consists of the following four parts ... ,4 Base Station,8 Base Station)2) WS824 Digital PBX System(5D/10D/10D-A,option)3) ... Mobile phone of 2.4G Digital wireless key phone(Called “Sub Phone”,such as ... description:1) Traditional PBX are being marginalizedWhether it is analog, digital and IP PBX, use a fixed desktop extension. ...