KR20020064403A - asymmetric digital subscriber line apparatus and networking system of yard using the same - Google Patents

Abstract

PURPOSE: An ADSL(Asymmetric Digital Subscriber Line) device and a private networking system using the same are provided to prevent the performance degradation between mutual service signals, expand a private network communication distance, and prevent interference with an other subscriber-side line by an HPNA(Home Phoneline Networking Alliance) signal. CONSTITUTION: An Internet interface unit(200) transmits and receives signals to a PSTN(Public Switched Telephone Network) through a pair of one terminals(410,430) of a telephone concent(400). A user interface unit(300) performs an interface among a plurality of communication equipments mutually connected in a space with a certain range through a pair of the other terminals(450,470) of the telephone concent(400), and transmits and receives mutual data with the Internet interface unit(200). A filtering unit(100) filters the signal inputted from the outside through a pair of the other terminals(450,470) of the telephone concent(400) according to a frequency band and provides the filtered signal to the Internet interface unit(200) and the user interface unit(300). The filtering unit(100) filters the signal outputted from the Internet interface unit(200) and the user interface unit(300) according to the frequency band and provides the filtered signal to a pair of one terminals(410,430) and the other terminals(450,470) of the telephone concent(400).

Description

Asymmetric digital subscriber line apparatus and networking system of yard using the same}

The present invention relates to an asymmetric digital subscriber line device and an on-premises networking system using the same. More particularly, the present invention relates to a signal generated by an outdoor emission of a signal transmitted from a user communication device when implementing on-premises network communication through a telephone line in a predetermined space. An asymmetric digital subscriber line device for preventing distortions of a network and an premises networking system using the same.

Asymmetric Digital Subscriber Line (ADSL) is a technology that enables high-speed data communication as well as general voice calls through public telephone lines and telephone line public networks installed in homes or businesses. Here, it is classified as asymmetric because of the difference in the speed of transmission and reception for the subscriber's communication equipment.

The ADSL is used to transmit most of the frequency bands downward to the subscriber side communication equipment, and the asymmetric structure allocates very few frequency bands transmitted from the subscriber side communication equipment. In addition, the same transmission line can simultaneously accommodate not only asymmetric digital subscriber line information but also voice information. Therefore, ADSL has a large amount of information flow for subscriber side communication equipment, and only a small amount of interactive control information is needed for provider side communication equipment.

In general, a network refers to a series of nodes or connection points connected to each other by a communication line, and a communication network using a telephone line is called a home telephone line networking. Such home telephone line networking, or HomePNA (Home Phoneline Networking Alliance (HPNA)), means a telephone line network solution that uses a telephone line at home to provide a high speed suitable for a network.

Hompien solutions use existing telephone lines, but can provide speeds up to 10 Mbps. The recently proposed version of HomePNA 2.0 is compatible with existing HomePNA technology and is designed to provide a faster network suitable for upbringing, video and data utilization.

HomePNA uses frequencies above 2MHz that are higher than the bandwidth used by telephones and other services.

1 is a block diagram showing a conventional asymmetric digital subscriber line device. The conventional asymmetric digital subscriber line device is connected to a public switched telephone network (PSTN) (not shown) and is connected to the Internet interface unit 10 for transmitting and receiving ADSL signals, and by the signals of the home PNA frequency band input from the user side. And a user low pass filter 30 for filtering and passing the audible frequency band signal. Here, the user interface 20 is connected to the computer 60 and the low pass filter 30 is connected to the telephone 50.

The internet interface unit 10 converts a signal flowing through the public telephone network and a signal input from the user side into an ADSL signal, and converts a signal input from the user interface unit 20 into a signal for the Internet. The user interface unit 20 decodes the home PN signal input from the internet interface unit 10 to cause the user side device to process and output a signal flowing from the user side device to the internet interface unit 10. The low pass filter 30 passes the voice frequency band signal to the signal flowing through the telephone outlet.

The home PNA signal generated from the user side device is converted into an ADSL band signal by the Internet interface unit via the user interface unit 20 and transmitted to the outside through a telephone outlet. On the other hand, the signal flowing from the telephone outlet is converted by the Internet interface unit 10 from the ADSL band signal to the home PNA signal corresponding thereto and the converted signal is output to the user side device via the user interface unit 20.

In order to transmit and receive a signal by the user device as described above, the signal is converted into a signal for the Internet through the Internet interface unit 10, and the signal flowing from the telephone outlet is also converted into a home PNA signal through the Internet interface unit 10 and then the user interface unit. Input to the user side device via the (20). At this time, the home network signal is transmitted and received to each network communication equipment through a plurality of telephone outlets connected by telephone lines. Therefore, communication between mutual network communication equipment is made possible.

However, in this case, the signal structure becomes a topology structure in which several signals are transmitted through a telephone line, which is the same transmission medium, so that the quality of signals is degraded for each signal using ADSL and home PN due to mutual interference and impedance mismatch. Done.

In addition, the home network signal is partly distributed to the external public telephone network connected to the telephone outlet, thereby reducing the network communication distance in the premises. In addition, the external distributed signal acts as a noise to the ADSL signal driven by the ADSL management system in the external telephone company, and may cause interference such as crosstalk to other external ADSL subscriber lines, and the home-PNA signal radiated to the outside It can cause electromagnetic interference, which in turn leads to a decrease in overall performance.

An object of the present invention for solving the above problems is not only to prevent performance degradation between mutual service signals when performing ADSL, networking, and telephone service, but also to extend the network communication distance in the premises and other subscribers by the home PNA signal. To provide an asymmetric digital subscriber line device and a networking system using the same to prevent interference with the side line.

1 is a block diagram showing a conventional asymmetric digital subscriber line device;

2 is a block diagram showing a preferred embodiment of the asymmetric digital subscriber line device according to the present invention;

3 is a graph illustrating a filtering frequency band of each filter of FIG. 2;

4 is a block diagram illustrating an internet interface of FIG. 2, and

FIG. 5 is a block diagram illustrating a preferred embodiment of a networking system using FIG. 2.

Explanation of symbols on the main parts of the drawings

10, 200: Internet interface unit 20, 300: User interface unit

30: low pass filter 40, 400: telephone outlet

50, 500: phone 60, 600: computer

An asymmetric digital subscriber line device according to the present invention for solving the above problems is an asymmetric digital subscriber line device connected to a subscriber side telephone outlet of a public telephone network and transmitting and receiving a signal, through a pair of telephone outlets of a public telephone network. An internet interface unit for transmitting and receiving a signal and providing a communication means by an asymmetric digital subscriber line, and providing an interfacing means between a plurality of communication equipment interconnected in a space of a predetermined range through another terminal pair of telephone outlets, A user interface unit which receives data from the Internet interface unit, and a signal input from the outside through one pair of telephone outlets is filtered according to the frequency band and provided to the Internet interface unit and / or the user interface unit, Interface and / or The signals output from the user interface unit according to the filtering by the band and includes a filter provided respectively to one pair of terminals and the other terminal pair of the telephone outlets. The filtering unit may include a first filter interposed between the telephone outlet and the internet interface unit and a second filter interposed between the telephone outlet and the user interface unit. Accordingly, the first filter selects and passes a signal of a frequency band for an asymmetric digital subscriber from a signal received through a public telephone network. In addition, the second filter selects and passes a signal of a frequency band used in communication equipment.

On the other hand, the premises network system using the asymmetric digital subscriber line device according to the present invention for solving the above problems is installed in a space within a predetermined range to enable data transmission and reception between the first terminal pair and communication equipment connected to the public telephone network In the space through the Internet interface and the second terminal pair, which transmits and receives signals to the public telephone network through the telephone outlet and the first terminal pair each having an interconnected second terminal pair, and provides a communication means by an asymmetric digital subscriber line. Internet interface unit and / or the user by providing a means for interfacing between the communication equipment and filtering the signal input from the outside through the user interface unit and the first terminal pair to receive data with the Internet interface unit according to the frequency band Internet interface provided in the interface unit An asymmetric digital subscriber line device comprising a filtering unit for filtering a signal output from the switch unit and / or the user interface unit according to its frequency band and providing the signal to the first terminal pair and the second terminal pair of the telephone outlet, and the telephone outlet. And a first user interface filter installed between each of the two terminal pairs and the communication equipment to pass a frequency band signal used in the user interface, whereby the user interface signals among the signals transmitted and received between the communication equipment are telephone outlets, respectively. The signal for asymmetrical subscriber line is transmitted and received between the second terminal pair and the digital subscriber line device of the communication equipment through the second terminal pair, the asymmetric digital subscriber line device and the first terminal pair. It is handed down.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

2 is a block diagram showing a preferred embodiment of the asymmetric digital subscriber line apparatus according to the present invention. Referring to the drawings, an asymmetric digital subscriber line (ADSL) apparatus according to the present invention is an Internet interface unit 200 for providing an internet communication means using a telephone line, communication connected to each other in a predetermined range of spaces And a user interface unit 300 that provides an interfacing means for the equipment, and a filtering unit 100 that performs filtering on a signal corresponding to the set passband frequency. The asymmetric digital subscriber line device according to the present invention is connected to the subscriber-side telephone outlet 400 of the public telephone network to transmit and receive signals.

The internet interface unit 200 transmits and receives signals through one end pairs 410 and 430 of the public telephone network subscriber side telephone outlet 400, and provides a communication means by an asymmetric digital subscriber line. In addition, the Internet interface unit 200 converts an input signal into a frequency signal for an asymmetric digital subscriber line or a frequency signal for a user interface according to a reception target.

The user interface unit 300 provides an interfacing means for a plurality of communication devices interconnected in a predetermined range of space through the other terminal pairs 450 and 470 of the telephone outlet 400, and an internet interface unit ( Receive data from each other. Here, the communication device includes a communication device capable of bidirectional or one-way communication such as a computer, a notebook, a fax, a printer, and the like. Therefore, the user interface unit 300 transmits a request signal for the Internet from the signals output from the user side within the predetermined range of space, that is, through the terminal pairs 410 and 430 of the telephone outlet 400 to the public telephone network. Output to the Internet interface unit 200 for transmission. In addition, in the case of a signal output from the communication equipment and transmitted to the communication equipment in the premises Internet interface for transmitting the signal to the corresponding communication equipment connected to the target communication equipment connected through the other terminal pair (450, 470) of the telephone outlet 400 Output to the unit 200.

The filtering unit 100 is connected to the telephone outlet 400, the Internet interface 200, the user interface 300 and the filtering unit 100 for each signal input from the telephone 500 for transmitting and receiving voice signals Filtering passes the signal according to the set passband frequency.

The filtering unit 100 includes a first filter 130, a second filter 150, a third filter 170, and a fourth filter 110. As shown in FIG. 3, a voice signal uses a signal in a frequency range of 0 to 4Khz, a 26Khz to 1,100Khz frequency for an asymmetric digital subscriber line, and a 5.5MHz to 9.5MHz frequency band for a user interface.

The first filter 130 performs filtering by a frequency set to pass a frequency band signal for an asymmetric subscriber line so that the output signal of the communication equipment does not affect the Internet interface unit 200. The first filter 130 may be a band pass filter (BPF) having a pass band of 26 kHz to 1.1 MHz. Accordingly, the first filter 130 functions to pass the frequency signal for the asymmetric digital subscriber line.

The second filter 150 performs filtering by a frequency set to pass a frequency band signal for the user interface so that the asymmetric digital subscriber line frequency signal or the low frequency noise does not affect the user interface unit 300. The second filter 150 may be a band pass filter having a pass band of 5.5 MHz to 9.5 MHz. Accordingly, the second filter 150 serves to pass the frequency signal for the user interface.

The third filter 170 performs filtering so that the voice frequency band signal is passed so that the frequency band signal for the user interface and the frequency signal for the asymmetric subscriber line do not interfere with the voice service of the telephone 500. The third filter 170 is preferably configured as a low pass filter (LPF) having a pass band of 0 to 4 kHz. Accordingly, the third filter 170 functions to pass the frequency signal for the voice signal.

The fourth filter 110 performs filtering to prevent the user interface frequency signal from being distributed to the public telephone network connected to one end pairs 410 and 430 of the telephone outlet 400. Therefore, it does not interfere with the asymmetric digital subscriber line device (not shown) in the remote telephone company, that is, the ADSL device and other external subscriber line communication equipment (not shown) connected to the public telephone network. The fourth filter 110 is preferably configured as a band pass filter having a pass band of 0 to 1.1 MHz. Accordingly, the fourth filter 110 functions to pass the voice signal frequency band and the frequency band signal for the asymmetric subscriber line.

4 is a block diagram showing a detailed configuration example of the Internet interface unit 200 shown in FIG. Referring to the drawing, the internet interface 200 includes a signal processor 290 for converting an input signal into a signal for a user interface or an asymmetric subscriber line signal, an amplifier 270 for amplifying the input signal, and a set frequency band. High-pass filter 250 for filtering the signal according to, the hybrid circuit unit 230 for separating and selecting the transmission signal and the received signal with respect to the input signal, and the connection of the first filter 130 and the Internet interface unit 200 Impedance matching unit 210 for matching the impedance according to the.

The signal processor 290 converts the signal introduced through the first filter 130 into a signal for the user interface and converts the signal from the user interface 300 into an asymmetric subscriber line signal. At this time, the converted signal does not change data, only the frequency band changes.

The amplifying unit 270 amplifies the signal received through the first filter 130 so as to be easily restored, and transmits a signal to be transmitted through the telephone line for the transmission target signal of the communication equipment input through the signal processing unit 290. Amplify the signal.

The high pass filter (HPF) 250 blocks the noise signal included in the asymmetric subscriber line signal among the signals input from the telephone outlet 400 to allow the asymmetric digital subscriber frequency band signal to pass. . Therefore, it is possible to transmit and receive a more accurate signal for asymmetric subscriber line.

The hybrid circuit unit 230 converts the line of the medium according to the line format of the transmission medium and separates the transmission signal and the reception signal so as to be output.

The impedance matching unit 210 matches the impedance according to the connection between the balanced line transmitting the signal and the unbalanced line. In addition, the signal input from the first filter 130 and the signal input from the hybrid circuit unit 230 is separated and output.

Meanwhile, the hybrid circuit unit 230 includes a channel converter 230a, a transmission signal selector 230b, and a reception signal selector 230c. The channel converter 230a converts the 2-wire channel that transmits the signal output from the impedance matching unit 210 into 4-wire, and converts the 4-wire channel that transmits the signal output from the high pass filter 250 into 2-wire. Convert. The transmission signal selector 230b selects a transmission target signal output from the high pass filter 250 among the input signals and outputs the signal to the impedance matching unit 210. The reception signal selector 230c selects a reception signal input from the impedance matching unit 210 and outputs the received signal to the high pass filter 250.

In addition, the signal processor 290 includes a transmission signal processor 290a and a reception signal processor 290b. The transmission signal processing unit 290a converts the signal output from the user interface unit 300 into an asymmetric user line signal and outputs the signal to the amplifying unit 270. The reception signal processor 290b converts the signal output from the amplifier 270 through the telephone outlet 400 into a user interface signal and outputs the signal to the user interface 300.

On the other hand, the following describes the operation according to the signal input of the asymmetric digital subscriber line device as described above.

The transmission and reception of voice signals using the phone 500 is as follows. When the voice frequency signal is input through the public telephone network, the voice band signal is filtered and passed through the third filter 170. The passed signal is received through the phone 500 and generates a sound through a handset (not shown). In addition, the sound input through the transmitter (not shown) is converted into a voice frequency and output. The output voice frequency signal is filtered and passed through the voice frequency band signal through the third filter 170. The passed voice frequency signal is transmitted to the public telephone network through one pair of pairs 410 and 430 of the telephone outlet 400.

A process of transmitting and receiving an asymmetric digital subscriber line signal using the computer 600 will be described. When a signal is input through the public telephone network, the frequency band signal for the asymmetric digital subscriber line is filtered through the first filter 130 and output to the internet interface unit 200. The internet interface unit 200 converts the input asymmetrical digital subscriber line frequency band signal into a user interface signal and outputs the signal to the user interface unit 300. The user interface 300 outputs a signal converted for the user interface to the computer 600. The computer 600 processes the received signal according to the input signal. In addition, the signal input to the Internet interface unit 200 via the user interface unit 300 for the asymmetric digital subscriber line signal generated through the computer is converted into a frequency band signal for the asymmetric digital subscriber line first filter 130 Will output The first filter 130 filters and passes the frequency band signal for the asymmetric digital subscriber line with respect to the input signal. The passed signal is transmitted through the telephone public network through the telephone outlet 400.

A process of transmitting and receiving a signal for a user interface using the computer 600 will be described. When a signal transmitted from communication equipment (not shown) connected to another telephone outlet is input through the telephone outlet 400, the second filter 150 filters and passes the frequency band signal for the user interface. The passed signal is input to the computer 600 to perform a process for the received signal. In addition, when a transmission target signal is generated from the computer, the second filter 150 is filtered through the user interface 300 to pass the user interface signal. The passed signal is transmitted to a communication device connected to another telephone outlet through another telephone outlet (not shown) connected to the other terminal pairs 450 and 470 of the telephone outlet 400.

FIG. 5 is a block diagram illustrating a preferred embodiment of the network system using FIG. 2. Referring to the drawings, the telephone outlets 400a, 400b, 400c, 400d are respectively attached to each of the rooms A, B, C, and D, and the plurality of telephone outlets have a first terminal pair 410a, which is connected to the public telephone network. 430a, 410b, 430b, 410c, 430c, 410d, and 430d) and the second terminal pairs 450a, 470a, 450b, 470b, 450c, 470c, 450d, and 470d interconnected to allow data transmission and reception between indoor communication devices. Each is provided.

Networking system using an asymmetric digital subscriber line device according to the present invention includes a plurality of telephone outlets 400a, 400b, 400c, 400d, asymmetric digital subscriber line device 900, and a plurality of first user interface filters 190b, 190c, 190d).

The plurality of telephone outlets 400a, 400b, 400c, 400d are provided in the spaces A, B, C, D within a predetermined range. In addition, the first terminal pair (410a, 430a, 410b, 430b, 410c, 430c, 410d, 430d) connected to the public telephone network and communication equipment (500a, 500b, 500c, 500d, 600a, 600b, 600c, 600d, 700) Each of the second terminal pairs connected to each other to enable data transmission and reception between them is provided.

The asymmetric digital subscriber line device 900 transmits and receives signals over a public telephone network through a first terminal pair of the telephone outlet 400a. On the other hand, the asymmetric digital subscriber line device 900 of the networking system according to the present invention uses the code shown in FIG.

The asymmetrical digital subscriber line device 900 includes a plurality of a plurality of interconnected indoors through the second terminal pairs 450a and 470a of the internet interface unit 200 and the telephone outlet 400a, which provide communication means by the asymmetrical digital subscriber line. It provides an interfacing means between the communication equipment and is input from the outside through the user interface unit 300 for receiving mutual data with the Internet interface unit 200 and the first terminal pairs 410a and 430a of the telephone outlet 400a. The signal is filtered according to the frequency band and provided to the internet interface unit 200 and / or the user interface unit 300, and the signal output from the internet interface unit 200 and / or the user interface unit 300 is transmitted to the frequency band. Filtering according to the filter includes a filter unit 100 for providing to one end pair (410a, 430a) and the other terminal pair (450a, 470a) of the telephone outlet (400a), respectively.

The plurality of first user interface filters 190b, 190c, and 190d may include second terminal pairs 450a and 470a of the telephone outlet 400a and communication devices 500a, 500b, 500c, 500d, 600a, 600b, 600c, and 600d. , Respectively, 700 to pass the frequency band signal used in the user interface.

Accordingly, the signal for the user interface among the signals transmitted and received between the communication devices 500a, 500b, 500c, 500d, 600a, 600b, 600c, 600d, and 700 is controlled by the telephone outlets 400a, 400b, 400c, and 400d. It is received through two terminal pairs (410a, 430a, 410b, 430b, 410c, 430c, 410d, 430d) and the digital subscriber line device 900, and communication equipment (500a, 500b, 500c, 500d, 600a, 600b, 600c). Signals for the asymmetric subscriber line among the signals transmitted and received between the terminals 600d and 700 include second terminal pairs 450a, 470a, 450b, 470b, 450c, 470c, 450d, and 470d, asymmetric digital subscriber line device 900, and a first signal. Through a pair of terminals 410a, 430a, 410b, 430b, 410c, 430c, 410d, 430d, it is received over a public telephone network.

On the other hand, there is a second user interface filter 190a between the communication equipment 600a and the asymmetric digital subscriber line device 900. Accordingly, the second user interface filter 190a blocks the passage of the signal in the frequency band for the asymmetric digital subscriber line.

Further, there is a first audio frequency pass filter 170a between the asymmetrical digital subscriber line device 900 and the communication equipment 500a, 500b, 500c, 500d. Accordingly, the first audio frequency pass filter 170a allows a voice communication by passing a signal in the audio frequency band. There are second audio frequency pass filters 170b, 170c, and 170d between the telephone outlets 470b, 470c, and 470d and the communication equipments 500b, 500c, and 500d. Accordingly, the second audio frequency pass filters 170b, 170c, and 170d filter and pass signals in the audible frequency band.

Here, there is an external communication filter 110 between the asymmetrical digital subscriber line device 900 and the first terminal pair 410a, 430a of the telephone outlet 400a. Accordingly, the external communication filter 110 selects an audible frequency band signal transmitted from the telephones 500a, 500b, 500c, and 500d and a frequency band signal for an asymmetric digital subscriber line and transmits it to a public telephone network. In addition, the external communication filter 110 selects and filters an audible frequency band signal and an asymmetric digital subscriber line signal among the signals received through the telephone outlet 400a through a public telephone network and outputs the asymmetric digital subscriber line device 900. do.

In the detailed description of the present invention, the asymmetric digital subscriber line device and the networking system using the same have been described. However, the device and the system may be specified and implemented as an ADS device and a networking system using the same.

According to the present invention, it is independent of interference and impedance mismatch between each other, and does not affect the DSL device in the outdoor telephone station, and also prevents the electromagnetic radiation through the external public telephone network leading to the outdoor telephone station. Crosstalk noise and interference between other subscriber telephone lines can be prevented, and the network communication distance within the subscriber's house is long because the network signal is not emitted to the outdoors.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. will be.

Claims (17)

An asymmetric digital subscriber line device connected to a subscriber telephone outlet of a public telephone network for transmitting and receiving a signal, An internet interface unit for transmitting and receiving signals to and from the public telephone network through one pair of telephone outlets and providing a communication means by an asymmetric digital subscriber line; A user interface unit which provides an interfacing means between a plurality of communication equipments interconnected in a space of a predetermined range through other terminal pairs of the telephone outlet, and receives data from the Internet interface unit; And The signal input from the outside through the terminal pair of the telephone outlet is filtered according to the frequency band and provided to the internet interface unit and / or the user interface unit, and from the internet interface unit and / or the user interface unit. And a filtering unit for filtering the output signal according to the frequency band and providing the signal to the terminal pair and the other terminal pair of the telephone outlet, respectively. The method of claim 1, The filtering unit, A first filter interposed between the telephone outlet and the internet interface unit to selectively pass a signal of an asymmetric digital subscriber frequency band from a signal received through the public telephone network; And And a second filter interposed between the telephone outlet and the user interface to selectively pass a signal of a frequency band used in the communication equipment. The method of claim 2, An asymmetrical digital subscriber line device, characterized in that the pass frequency band of the first filter is 26 Khz to 1.1 MHz. The method of claim 2, An asymmetrical digital subscriber line device, characterized in that the pass frequency band of the second filter is 5.5Mhz to 9.5Mhz. The method of claim 2, And the filtering unit further comprises a third filter disposed between the one end pair of the telephone outlet and a telephone to pass a signal in an audible frequency band. The method of claim 5, The pass frequency band of the third filter is an asymmetrical digital subscriber line device, characterized in that less than 4Khz including an audible frequency band. The method of claim 2, And the filtering unit further comprises a fourth filter interposed between the one end pair of the telephone outlet and the internet interface unit to pass a frequency below the frequency band for the asymmetric digital subscriber line. . The method of claim 7, wherein And a pass frequency band of the fourth filter is 1.1 MHz or less. The method of claim 2, The internet interface unit, A hybrid circuit unit which selects and outputs a transmission target signal which is a signal output from the communication devices; A high pass filter for passing a signal corresponding to a frequency band for an asymmetric subscriber line among signals output from the hybrid circuit unit and signals to be transmitted from the communication equipment; An amplifier for amplifying a signal output from the high pass filter and a signal to be transmitted output from the communication device; And And a signal processing unit converting the signal output from the amplifier into a signal of the frequency band for the user interface, and converting the signal output from the user interface into a signal of the frequency band for the asymmetric subscriber line. Subscriber line device. The method of claim 9, The internet interface unit may perform impedance matching between a transmission line for transmitting the frequency band signal for the asymmetric subscriber line output from the first filter and an unbalanced line for outputting the frequency band signal for the asymmetric subscriber line input from the first filter. An asymmetric digital subscriber line device further comprising an impedance matching section. The method of claim 9, The hybrid circuit unit, A channel converting unit converting a channel into a 4-wire type so that a signal input from the impedance matching unit through the 2-wire line is output through the 4-wire line; And And a signal selector configured to separately select a transmission and reception signal from among the signals output from the impedance matching unit and the high pass filter to perform corresponding signal processing. The method of claim 11, The signal selector, A reception signal selection unit for selecting a signal output through the two-wire type from the impedance matching unit and outputting the signal to the high pass filter through a four-wire line formed by the channel converter; And And a transmission signal selector which selects transmission target signals of the communication equipments output from the high pass filter and outputs them to the impedance matching unit through the two-wire system. The method of claim 9, The signal processing unit, A reception signal processor converting a signal output from the amplifier into a frequency signal for a user interface and outputting the signal to the user interface; And And a transmission signal processing unit converting the signal output from the user interface unit into the frequency band signal for the asymmetric subscriber line and outputting the signal to the amplifying unit. A plurality of telephone outlets installed in a space within a predetermined range and each having a first terminal pair connected to a public telephone network and a second terminal pair interconnected to enable data transmission and reception between communication devices; An internet interface for transmitting and receiving a signal to the public telephone network through the first terminal pair and providing a communication means by an asymmetric digital subscriber line, interfacing between the communication equipment interconnected in the space via the second terminal pair A user interface unit for receiving data mutually with the internet interface unit, and filtering the signal input from the outside through the first terminal pair according to the frequency band to provide the internet interface unit and / or the user interface unit An asymmetric digital subscriber line device having a filtering unit provided to the first and second terminal pairs by filtering the signals output from the internet interface unit and / or the user interface unit according to the frequency band thereof; And And a plurality of first user interface filters installed between the second terminal pair and the communication equipment to pass the frequency band signal for the user interface. Thereby, among the signals transmitted and received between the communication equipment, the signal for the user interface is received through each of the second terminal pair and the digital subscriber line device, and the signal for the asymmetrical subscriber line is the second terminal pair and the An on-premises networking system using an asymmetric digital subscriber line device and an asymmetric digital subscriber line device received over a public telephone network through the first terminal pair. The method of claim 14, An on-premises networking using the asymmetric digital subscriber line device further comprises a second user interface filter installed between the communication device and the asymmetric digital subscriber line device to block passage of a signal in a frequency band for the asymmetric digital subscriber line device. system. The method of claim 14, And an audible frequency pass filter installed between the asymmetric digital subscriber line device and the telephone to pass a signal in an audible frequency band. The method of claim 14, Intra-premises networking using an asymmetric digital subscriber line device further comprising an external communication filter installed between the asymmetric digital subscriber line device and the first terminal pair to pass audible frequency and frequency band signals for the asymmetric digital subscriber line. system.