Embodiments of the disclosure provide an aggregate cutting saw chain having a pitch in the range of approximately 0. When the physical layer 10 makes a transition to a low power consumption mode, a standby signal for instructing the optical transceiver 30 to preset it into the low power consumption mode is brought into active and is output thereto. If a response is received from the head end, then the application reads the headers on the responsive message to determine whether the protocol at the head end is consistent with the protocol that the DSL modem is set to. A trough attached to the plate catches and retains overflow water.