C. Customer Premises Equipment
Next to the power consumption of the access network, the power consumption of the customer premises equipment is important as well.
At present, for fixed line technologies, the home gateway (such as a DSL modem) consumes 5 – 10 W, which is higher than the power consumption in the access network. Home gateways for optical networks also tend to have higher energy consumption than their DSL counterparts. This is a problem since it can annihilate the potential power reduction benefit of adopting GPON technology. In wireless networks the power consumption of the mobile stations is much lower since these are designed for mobile applications, which require low power consumption for long autonomy times.