公开(公告)号：US20190082244A1

公开(公告)日：2019-03-14

申请号：US16087739

申请日：2017-03-30

Applicant: British Telecommunications Public Limited Company

Inventor： Anas AL RAWI ,  Leslie HUMPHREY ,  Trevor MORSMAN

IPC: H04Q11/00

Abstract: A telecommunications access network comprises a primary aggregation point in the form of an exchange, a plurality of optic fiber to metallic pair interface aggregation points which may be in the form of Distribution Point Units (DPUs) each of which is connected to the primary aggregation point by a respective optical fiber connection, and a plurality of terminating devices which may be in the form of customer premises equipment (CPE) devices, each of which is connected to a respective one of the optic fiber to metallic pair interface aggregation points by a respective twisted metallic pair connection. The access network further includes a plurality of metallic, interface-interface connections between one or more pairs of the optic fiber to metallic pair interface aggregation points. Each metallic, interface-interface connection preferably comprises three or more twisted metallic pairs of wires.

公开(公告)号：US20170126899A1

公开(公告)日：2017-05-04

申请号：US15318492

申请日：2015-07-03

Applicant: British Telecommunications Public Limited Company

Inventor： Trevor LINNEY ,  Ian HORSLEY ,  Trevor MORSMAN

IPC: H04M11/06 ,  H04M19/00

CPC classification number: H04M11/062 ,  H04B3/46 ,  H04M19/001 ,  H04W52/00 ,  Y02D70/00

Abstract: Embodiments relate to a method, and a device for performing the method, for allocating power levels to a transmission in a DSL network, the method including: identifying a first and second geographical region as being associated with a subscriber line in the DSL network; defining a first spectral mask having a first set of power levels over a range of frequencies, wherein the first set of power levels are tailored according to a Radio Frequency, RF, environment of the first geographical region; defining a second spectral mask having a second set of power levels over the range of frequencies, wherein the second set of power levels are tailored according to an RF environment of the second geographical region; and constructing a transmit spectral mask for the subscriber line, the transmit spectral mask based on a combination of the first and second spectral masks, including, for each frequency in the range of frequencies, using the minimum power level for that frequency from the first and second spectral masks.