KR20000039811A - Apparatus for separating voice signal and data signal of adsl - Google Patents

Abstract

PURPOSE: An apparatus for separating a voice signal and a data signal of an ADSL is provided to receive an ADSL service by using an existing line of a main distributing frame. CONSTITUTION: An apparatus for separating a voice signal and a data signal of an ADSL comprises a main distributing frame(20), a data signal separation portion(22), and an ADSL modem(14). The main distributing frame is located between a subscriber line and a switching device. The main distributing frame comprises a protection circuit for limiting an overload on the subscriber line and a filter for separating a low frequency. The data signal separation portion separates a data signal on the subscriber line. The ADSL modem transmits the data signal to a router.

Description

Voice / Data Signal Separator for Asymmetric Digital Subscriber Line

The present invention relates to a voice signal / data signal separation device for an asymmetric digital subscriber line. The present invention relates to an audio signal / data signal separation device.

1 is a circuit diagram illustrating a conventional asymmetric digital subscriber line service using a telephone subscriber line, including a main distributing frame 10, a splitter 12, and an asymmetric digital subscriber line; (Hereinafter referred to as ADSL), a modem 14, a router 16, and a local exchange 18.

The main wiring board 10 is a place where all the subscriber lines are collected, all the cables in the telephone station go through this place, and a protector 10a capable of limiting overvoltage and overcurrent for each line. The protector 10a typically includes an overvoltage limiting element and an overcurrent limiting element, the overvoltage limiting element being connected between line-to-ground and the overcurrent limiting element in series with the line. The splitter 12 is a filter for separating a low frequency (within 4KHz) voice signal and a high frequency data signal, and the voice signal separated by the splitter 12 is applied to the stream exchanger 18, and the data signal is The ADSL modem 14 and the router 16 are connected to the Internet network and the like. The ADSL modem 14 is a modulator / demodulator for generating a signal suitable for high-speed data communication using copper (copper), the router 16 is connected to the Internet network, and the local exchange 18 is a voice call. Connect two subscribers who want to.

The ADSL service employed in the circuit diagram of FIG. 1 configured as described above is a transmission service capable of simultaneously accommodating a low frequency (4KHz) voice telephone and a high frequency (1MHz) high speed data communication using a subscriber line (2 wire).

Therefore, the splitter 12 is inserted on the line to separate the voice signal and the data signal in the telephone company. However, since a large number of subscriber lines are accommodated in the main distribution board 10 in the telephone company, it is difficult to reconfigure the subscriber lines to insert the splitter 12.

Accordingly, the present invention has been made in view of the above-described conventional situation, and an object of the present invention is to provide an apparatus for easily separating voice signals and data signals of an ADSL without reconfiguring lines in a main distribution board in a telephone company.

In order to achieve the above object, a voice signal / data signal separation device of an asymmetric digital subscriber line according to a preferred embodiment of the present invention includes a protection circuit for limiting overload on a subscriber line and a voice of low frequency among frequencies passed through the protection circuit. A main wiring board provided between the subscriber line and the city exchange, having a protector made of a filter separating the signals;

Data signal separation means connected to the subscriber line for separating data signals on the subscriber line;

And an asymmetric digital subscriber line modem for transmitting the data signal from the data signal separating means to the router.

1 is a circuit diagram illustrating an asymmetric digital subscriber line service using a conventional telephone subscriber line;

2 is a block diagram of an audio signal / data signal separation device of an asymmetric digital subscriber line according to an embodiment of the present invention.

Explanation of symbols for main parts of the drawings

10: main wiring board 12: splitter

14: ADSL modem 16: router

18: city exchange 20: main distribution board

22: data signal separation means 30: protector

32: protection circuit 34: filter (low pass filter)

40: overcurrent limiting element 42: filter (band pass filter)

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of an audio signal / data signal separation device of an asymmetric digital subscriber line according to an embodiment of the present invention. The same components as those described in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. do.

An embodiment of the present invention includes an ADSL modem 14, a router 16, a local exchange 18, a main wiring board 20, and data signal separation means 22.

The main wiring board 20 is installed between the subscriber line (2wire) and the local exchange 18 and passes through a protection circuit 32 and the protection circuit 32 for limiting overload (overvoltage and overcurrent) on the subscriber line. A protector 30 is formed of a filter 34 (low pass filter in the present invention) that separates a low frequency audio signal from one frequency. In the embodiment of the present invention, the ADSL mark is attached to the surface of the protector 30 in the main wiring board 20 so as to be distinguished from other protectors around.

The data signal separating means 22 is connected to the subscriber line using another two copper wires at the connection point N of the copper (copper) line of the subscriber line and the main wiring board 20, and the filter 42; In the embodiment of the present invention, the data signal is separated using a band pass filter) and sent to the ADSL modem 14. Since the data signal separating means 22 is connected at the front end of the protector 30 of the main wiring board 20, the overcurrent can flow into the filter 42, so the overcurrent limiting element 40 is placed at the front end of the filter 42. Limit the inrush over current.

That is, if there is a difference between the configuration of the present invention and the conventional configuration, the splitter 12 is provided between the main wiring board 10 and the city exchanger 18 in the related art, but in the embodiment of the present invention, the voice signal in the main wiring board 20 is used. A filter (34) capable of separating the signal from the protector (30), and a means (40) capable of separating the data signal from the ADSL modem (14) with a path different from that of the main wiring board (20). The difference is that they are connected.

According to the audio signal / data signal separation device of the asymmetric digital subscriber line according to the embodiment of the present invention configured as described above, the low frequency (within 4KHz) audio signal and the high frequency data signal loaded on the subscriber line (2 wire) are the main wiring board ( 20) and data signal separating means 22. Accordingly, only the low frequency voice signal among the frequencies from which the overload is removed by the protection circuit 30 is filtered by the filter 34 in the main wiring board 20 and applied to the in-situ switch 18, while the overcurrent limiting element 40 Only the high frequency data signal among the frequencies from which the overcurrent has been removed is provided by the filter 42 of the data signal separating means 22 and provided to the router 16 via the ADSL modem 14.

According to the present invention as described above, by inserting a filter for separating the audio signal into the protector, and connected to another filter to separate the data signal by connecting only two other copper wires in front of the protector. Not only can the ADSL service be easily accommodated without reconfiguring existing circuits, it is also easy to determine whether to join the ADSL by looking at the marking on the surface of the main circuit board protector.

On the other hand, the present invention is not limited only to the above-described embodiments, but may be modified and modified without departing from the scope of the present invention.

Claims (2)

A main circuit board having a protection circuit for limiting the overload on the subscriber line and a filter protector for separating a low frequency voice signal from the frequencies passing through the protection circuit, the main wiring panel being provided between the subscriber line and the city exchange; Data signal separation means connected to the subscriber line for separating data signals on the subscriber line; And asymmetric digital subscriber line modem for transmitting data signals from said data signal separation means to a router. The method of claim 1, The data signal separating means comprises an overcurrent limiting element for limiting the overcurrent on the subscriber line, and a filter for passing a high frequency data signal of the frequency passing through the overcurrent limiting element. Signal / Data Signal Separator.