US 2002/0057652 A1 · Managed HDSL repeater

Abstract

A repeater for HDSL transmission is presented. The repeater replaces the regenerator commonly used in HDSL by utilizing the activation/deactivation process in the HDSL specification. The repeater is adjusted to detect an activation/deactivation sequence, whereby a flip-flop in the repeater is alternated. A first state of the flip-flop allows transmission passing through the repeater to the terminating point, e.g. a network terminal, and a second state loops transmission back to the originating point, e.g. a line terminal. The looping may then be utilized for maintenance and error detection and recovery. By use of one of the free bit in the overhead channel in the HDSL transmission as an origin bit, wherein “1” is set in the upstream direction, and “0” is set in the downstream direction, it is possible to detect at the line terminal whether there is a loop in the repeater.

Claims6

Dependent claims

An arrangement in a communication system comprising:

a line terminal;
a network terminal;
and
a repeater means, said line terminal connected to said repeater means by a first transmission line, said repeater means further connected to said network terminal by a second transmission line, and transmission between said line terminal and said network terminal is activated and deactivated with a certain activation/deactivation process, and
wherein said repeater means is adapted to detect said activation/deactivation process and to alternate a flip-flop included in said repeater means between a first state and a second state on response to a detected activation/deactivation process, said transmission is passed through said repeater means when said flip-flop is in said first state, and is looped back in said repeater means when said flip-flop is in said second state.

2 more elements

Dependencies are inferred from the claim text.

Managed HDSL repeater

Life of this patent

Managed HDSL repeater

Life of this patent

Abstract

Claims6