We discuss a novel communication technology that uses the human body as a communication path. The conventional body-channel communication systems are composed of only transceivers (TRX) on the human body. Our proposed system is composed of not only transceivers on the body (wearable TRX) but also transceivers embedded in floors, PCs, equipments, etc (embedded TRX). Therefore, our system broadens the fields of application. To estimate the transmission quality of our system, we measured the packet error rates (PER) between a wearable TRX and an embedded TRX. The PER during downlink was better than that during uplink. We describe a method for improving the PER during uplink with a common mode filter and show the PER characteristics.