| 摘要 |
A system and a method for distributing power to telecommunication subscriber lines is disclosed. It is important that the power dissipation in the subscriber line interface circuits, SLICs is reduced. Power dissipation occurs when the subscriber lines are fed with a voltage level that is higher than necessary. It is also important that the implementation allows for flexibility when configuring the subscriber lines. These problem have been solved by using a power distribution system comprising at least three power supply units with different power supply voltages, a control unit and a switching unit connected between the SLICs and the power supply units. The control unit is adapted to determine the loop voltages of the subscriber lines and to connect the corresponding SLIC to the power supply unit giving the least power dissipation, |
