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US 6,584,148 B1Granted
System and method for testing digital subscriber lines
AssigneeNokia Corporation
InventorsBrent R. Zitting, Robert D. Deaton, Mark O. Rigby, Ron M. Roberson, Kevin R. Banks, Jeffrey J. Sands
Life of this patent
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Abstract
A system for testing a communication path for digital subscriber line (DSL) signals includes a loop management device coupled in the communication path between a DSL access multiplexer (DSLAM) and a DSL modem located at a customer premises. The system also includes a remote test interface coupled in the communication path between the loop management device and the DSL modem. The loop management device and the remote test interface communicate using voice-band signals transmitted over the communication path and collaboratively test the communication path.
Claims19
A system for testing a communication path for digital subscriber line (DSL) signals, comprising:
- a loop management device coupled in the communication path between a DSL access multiplexer (DSLAM) and a DSL modem located at a customer premises;
- a remote test interface coupled in the communication path between the loop management device and the DSL modem, comprising a first interface coupled to a first portion of the communication path, the first portion of the communication oath coupled to the DSL modem, said first portion comprises a tip wire and a ring wire;
- a second interface coupled to a second portion of the communication path, the second portion of the communication oath coupled to the loop management device, wherein the remote test interface is further operable to disconnect the first portion of the communication oath from the second Portion of the communication path to perform testing of the second portion in collaboration with the loop management device, said second portion comprises a tip wire and a ring wire;
- wherein, the loop management device and the remote test interface are operable to communicate using voice-band signals transmitted over the communication path and the loop management device and the remote test interface are further operable to collaboratively test the communication path without the use of a trained technician by providing a locator tone in order to find the communication oath and the remote test interface is still further operable to disconnect the tip wire of the first portion from the tip wire of the second portion and disconnect the ring wire of the first portion from the ring wire of the second portion to form an open circuit for testing.
1 more element
A system for testing a communication path for digital subscriber line (DSL) signals, comprising:
- a loop management device coupled in the communication path between a DSL access multiplexer (DSLAM) and a DSL modem located at a customer premises;
- a remote test interface coupled in the communication path between the loop management device and the DSL modem, comprising a first interface is coupled to a first portion of the communication path, the first portion of the communication oath coupled to the DSL modem, said first portion comprises a tip wire and a ring wire;
- a second interface coupled to a second portion of the communication path, the second portion of the communication path coupled to the loop management device, wherein the remote test interface is further operable to disconnect the first portion of the communication path from the second portion of the communication path to perform testing of the second portion in collaboration with the loop management device, said second portion comprises a tip wire and a ring wire;
- wherein the loon management device and the remote test interface operable to communicate using voice-band signals transmitted over the communication path and the loon management device and the remote test interface are further operable to collaboratively test the communication path without the use of a trained technician by providing a locator tone in order to find the communication path and the remote test interface is further operable to disconnect the tip wire of the first portion from the tip wire of the second portion and disconnect the ring wire of the first portion from the ring wire of the second portion;
- and
- the remote test interface is still further operable to connect the tip wire and the ring wire of the second portion to form a short circuit for testing.
3 more elements
A method for testing a communication path for digital subscriber line (DSL) signals, comprising:
- coupling a loot management device in the communication path between a DSL access multiplexer (DSLAM) and a DSL modem located at a customer premises;
- coupling a remote test interface in the communication oath between the loop management device and the DSL modem;
- transmitting voice-band signals between the loop management device and the remote test interface over the communication path to facilitate communication between the loop management device and the remote test interface;
- testing the communication oath using the loop management device in collaboration with the remote test interface;
- disconnecting a first portion and a second portion of the communication path using the remote test interface, comprising:
- disconnecting a tip wire of the first portion from a tip wire of the second portion;
- and
- disconnecting a ring wire of the first portion from a ring wire of the second portion to form an open circuit for testing, wherein the first portion of the communication oath is coupled to a first interface of the remote test interface and to the DSL modem, and wherein the second portion of the communication oath coupled to a second interface of the remote test interface and to the loop management device;
- and
- transmitting an open loop signal from the loop management device to the remote test interface, the open loop signal instructing the remote test interface to form the open circuit for a specified period of time.
7 more elements
A method for testing a communication path for digital subscriber line (DSL) signals, comprising:
- coupling a loop management device in the communication path between a DSL access multiplexer (DSLAM) and a DSL modem located at a customer premises;
- coupling a remote test interface in the communication path between the loop management device and the DSL modem;
- transmitting voice-band signals between the loop management device and the remote test interface over the communication path to facilitate communication between the loop management device and the remote test interface;
- testing the communication path using the loop management device in collaboration with the remote test interface;
- disconnecting a first portion and a second portion of the communication path using the remote test interface, comprising:
- disconnecting a tip wire of the first portion from a tip wire of the second portion and disconnecting a ring wire of the first portion from a ring wire of the second portion;
- connecting the tip wire and the ring wire of the second portion to form a short circuit for testing;
- and
- transmitting a short loop signal from the loop management device to the remote test interface, the short loop signal instructing the remote test interface to form the short circuit for a specified period of time.
6 more elements
Dependencies are inferred from the claim text.