| 摘要 |
The present invention relates to a method for provisioning a new broadband communication service (G.fast). In accordance with an embodiment of the invention, the method comprises inserting an access node (100) along a subscriber loop (62), the access node including a bypass switch (150) for initially connecting a terminal segment (64) of the subscriber loop to a network segment (63) of the subscriber loop; operating a legacy communication service (POTS; VDSL2) over the subscriber loop; and connecting a PSE (200) for reverse power feeding of the access node and a new subscriber device (70) for operating the new broadband communication service to the terminal segment. The method further comprises, by the PSE, transmitting a sequence of successive command signals (AC_cmd_signals) over the terminal segment prior to the insertion of the power feeding signal; by the access node, accumulating an electrical charge from the command signals; by the access node and by means of the so accumulated electrical charge, detecting a valid command signal in the sequence of successive command signals, and thereupon configuring the bypass switch for connecting the terminal segment to a transceiver (120) adapted to operate the new broadband communication service and to a PSU (140) adapted to supply power to the access node from the power feeding signal; by the PSE, injecting the power feeding signal over the terminal segment for reverse power feeding of the access node; and operating the new broadband communication service over the terminal segment. The present invention also relates to an access node, to a PSE, and to a data communication system. |
