Patent ID: 9077818
Filing Date: 2015-07-07
Classification: H04L,H04M

Abstract:
1. A method, comprising: sensing a ring wire state of a ring wire to have a voltage; sensing a tip wire state of a tip wire to have a lack of voltage; automatically switching a narrow band loop termination of a first service of a switch device to a direct current termination associated with a second service based upon a detected difference between the ring wire state and the tip wire state, wherein the detected difference is a voltage difference between the ring wire and the tip wire; and transmitting a control signal via a direct current voltage to the switch device to initiate the switching of the narrow band loop termination responsive to the detected voltage difference by negatively biasing a sensed ring wire voltage with respect to a sensed tip wire voltage; wherein, the first service is plain old telephony service and digital subscriber line service, and the second service is digital subscriber line service and a sealing current or digital subscriber line service and voice over internet protocol with sealing current.