JP2002034060A - Dsl splitter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a splitter unit with an MDF without using a terminal board and its connection cable in ADSL communication. SOLUTION: The DSL splitter unit 110 comprises a plurality of splitter boards 200 for separating a voice signal and a data signal, and a unit housing 202 for containing the plurality of splitter boards. The unit housing 202 comprises connectors 216, 218 for connection with an MDF on the telephone subscriber side, and connectors 220, 222 for connection with an MDF on the telephone exchange side. Each splitter board 200 comprises a modem connector 204 for connecting the wiring from an ADSL modem, connection terminals 208, 210 for connection with the connectors 216, 218, connection terminals 212, 214 for connection with the connectors 220, 222, circuit wiring 230 on a board for interconnecting the modem connector and each connection terminal, and means 234, 246 for separating the voice signal and the data signal passing through the circuit wiring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a splitter device for separating a voice signal and a data signal in DSL communication, especially in ADSL communication.

[0002]

2. Description of the Related Art DSL (Digital S) which communicates digital data using a metallic cable which is a telephone subscriber line.
ubscriber Line) Communication technology is actively developed. DSL
Enables high-speed transmission of digital data to existing telephone subscriber lines using bands up to frequencies much higher than the 4 kHz bands used in telephones. In recent years, with the spread of the Internet, in recent years, in particular, ADSL (Asymmetric DSL: Asymmetric D
SL) is drawing attention.

[0003] FIG. 6 shows an example of an AD system using an existing telephone line network.
It is a connection conceptual diagram at the time of performing SL communication. Telephone office 60
0, the subscriber line from the home is connected to the telephone exchange 602.
MDF (Main Distribution)
Frame: main wiring board) 604 is used. In the ADSL communication, the MDF 604 is connected to the splitter device 6.
The ADSL modem 608 is connected via the PC 06. The splitter device 606 is connected to a telephone exchange 602 (exchange side MD).
F) and the data signal from the ADSL modem 608 are superimposed and output to the subscriber line through the subscriber side MDF. An in-house splitter 610 is installed in each house, where an input signal is divided into a voice signal and a data signal, and each is output to a data communication device such as a telephone or a computer. A voice or data signal from the home is input to the splitter device 606 via the home splitter 610 and the MDF 604. If the voice or data signal is a voice signal, the voice or data signal is output to the telephone exchange via the MDF 604 on the exchange side. If it is a signal, ADSL modem 6
08 to a network such as a LAN.

[0004]

In the ADSL communication, the splitter device 606 is usually mounted together with an ADSL modem in a frame 612 (hereinafter, referred to as an ADSL frame or an ADSL frame device) placed in a telephone office. You. In the ADSL frame 612, the splitter device 6
A terminal board 614 is conventionally used to connect the 06 to many lines in the MDF on the subscriber side and the exchange side.

However, there are the following problems in connecting a splitter device using a terminal board to an MDF. (1) To connect the terminal board and the splitter device,
Since an extremely large number of connection cables corresponding to the number of lines are used, a considerable time is required for the connection between them, and there is a high possibility of causing erroneous wiring. (2) Sufficient space is required for routing the connection cable, which hinders miniaturization of the ADSL rack. (3) In the case where the splitter device and the MDF are connected via the terminal board, it is difficult to check and identify the cause when a communication failure occurs.

Accordingly, an object of the present invention is to make it possible to connect a splitter device to an MDF without using the terminal board and its connection cable, thereby solving the conventional problems.

[0007]

SUMMARY OF THE INVENTION The present invention provides a DSL splitter unit comprising a plurality of splitter boards for separating a voice signal and a data signal, and a housing for accommodating the plurality of splitter boards. . DSL
In the splitter unit, the housing includes a plurality of subscriber side MDF connectors connected to a telephone subscriber side MDF, and a plurality of exchange side MDF connectors connected to a telephone exchange side MDF. The base includes a modem connection terminal for connecting a predetermined channel wiring from the DSL modem, and a subscriber side M of the housing.
A subscriber side MDF connection terminal for connecting to the DF connector, an exchange side MDF connection terminal for connection to the exchange side MDF connector of the housing, the modem connection terminal, the subscriber side MDF connection terminal and the Exchange side MD
A circuit wiring on a board connecting the F connection terminals to each other; and a signal separating unit for separating the audio signal and the data signal passing through the circuit wiring on the board.

[0008] When the DSL splitter unit having the above configuration is used, each splitter base and the subscriber side M
No terminal board is required to connect the DF or the exchange side MDF.

In the present invention, the signal separating means allows the output of the voice signal from the subscriber side MDF connection terminal side to the exchange side MDF connection terminal side, and the signal separation means from the modem connection terminal side to the exchange side MDF connection side. A signal filter for inhibiting output of the data signal to the connection terminal side.

Further, the signal separating means permits the output of the data signal from the subscriber side MDF connection terminal side to the modem connection terminal side, and the subscriber side MDF connection terminal side to the modem connection terminal side. A signal filter for inhibiting the output of the audio signal to the audio signal.

In the present invention, a protection circuit for an overvoltage may be provided on the circuit wiring.

In a preferred embodiment, the circuit wiring includes signal lines for 20 channels.

Further, in the present invention, the subscriber side MDF connector and the exchange side MDF connector of the housing are press-fitted to the subscriber side MDF connection terminal or the exchange side MDF connection terminal of the splitter base, A terminal insertion portion for maintaining the contact of the contact;
Preferably, a wiring connection unit is provided to enable connection of a wiring from the DF or the MDF on the exchange side.

[0014] Each of the splitter boards may include a test circuit wiring branched from the circuit wiring and a signal state of the signal for monitoring a state of a signal passing over the circuit wiring on the substrate. It is preferable to include a test connection terminal for connecting a device to be monitored.

In a preferred embodiment, each of the splitter boards is based on an ADSL communication system.

Further, the DSL splitter unit of the present invention further comprises a splitter board conforming to the SDSL communication system, wherein the splitter board has a modem connection terminal for connecting wiring for a predetermined channel from the DSL modem; A subscriber-side MDF connection terminal for connecting to the subscriber-side MDF connector of the housing; and circuit wiring on a board for interconnecting the modem connection terminal and the subscriber-side MDF connection terminal. it can.

[0017] The present invention also relates to a DSL mounting apparatus comprising the DSL splitter unit, which preferably comprises a DSL modem connected to each of the splitter boards.

[0018]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a DSL according to the present invention.
It is a front view of the ADSL mounting apparatus provided with the splitter unit. The ADSL frame device 100 is installed in a telephone office and accommodates equipment for realizing ADSL communication in a frame housing 102 thereof. Various units such as a power supply unit 104, an overvoltage monitoring unit 106, an ADSL modem unit 108, and a DSL splitter unit 110 according to the present invention are mounted on the frame housing 102 of the ADSL mounting apparatus 100 as necessary. . In the figure, the one in which two DSL splitter units 110 are accommodated is shown.

FIG. 2 is a perspective view of the DSL splitter unit according to the present invention. In the figure, the DSL splitter unit 110 includes a plurality of splitter boards 200 and a unit housing 202 that accommodates the splitter boards 200.

The splitter board 200 realizes the function of the splitter device in the ADSL communication. Here, the audio signal and the data signal in the communication path are separated and superimposed. Signals for a plurality of channels (20 channels in this embodiment) are input to one splitter substrate 200 and processed. Each splitter base 200
Electronic components for realizing the function are provided on a printed wiring board, and a pair of connectors 2 are provided on the front side thereof.
04 and 206 are installed.

One of the connectors 204 has the ADSL
ADSL modem unit 1 mounted in mounting device 100
08 cable connector (not shown)
(Hereinafter, this connector 204 is referred to as a modem connector 204). ADSL modem unit 10
8 from the modem connector 2
It is guided into the splitter base 200 via the optical line 04.

The other connector 206 can be connected to a signal monitoring device (not shown) for monitoring transmission characteristics of a signal transmitted through the splitter board 200 (hereinafter, this connector 206 is tested). Connector 20
6). By connecting the signal monitoring device via the test connector 206, it is possible to monitor the transmission characteristics of signals in the splitter board before operating the splitter board. The signal monitoring device may be mounted in the ADSL frame device 100 or may be outside the frame. When measuring a signal, the signal monitoring device can be configured to be remotely controllable via a network.

Each splitter board 200 has four connection terminals 208 to 214 on the back side. These connection terminals 208 to 214 are connected to a unit housing 2 described later.
02 is connected to the MDF in the central office via the connector No. 02. That is, when the splitter base 200 is mounted on the unit housing 202, the connection terminals 208 and 210 are connected to the unit housing 2 connected to the MDF on the telephone exchange side.
The connectors 220 and 222 of the unit housing 202 connected to the MDF of the subscriber side are inserted into the connectors 216 and 218 of the 02 side.
Is inserted into In the following, the connection terminals 208 and 210 will be referred to as exchange side MDF connection terminals, and the connection terminals 212 and 2
14 is called a subscriber side MDF connection terminal.

The connection terminals 208 to 214, the modem connector 204, and the test connector 206 are connected to each other by a circuit wiring formed on the splitter board 200. The wiring system on the splitter board 200 and the functional components on the circuit wiring will be described later.

On the other hand, the unit housing 202 is attached to the frame housing 102 of the ADSL rack apparatus shown in FIG. 1 through the mounting rib 224, and a plurality of unit housings (10 ) Can be accommodated in a stacked manner. Each splitter base 200
Both side pieces are inserted along the rail 226 on the inner wall of the unit housing 202. On the back of the unit housing 202,
Each connection terminal 208 to 21 of the splitter substrate 200
4 to insert and maintain its electrical connection
To 222 are installed. Each connector 216 to 222
Has, for this purpose, an insertion portion that press-fits and holds each of the connection terminals 208 to 214 and has an electrode that is in contact with each of the signal lines exposed on the surface thereof. Further, each of the connectors 216 to 222 is configured such that wiring from the MDF can be connected on its rear side, that is, on the side exposed outside from the unit housing 202. That is,
A large number of wires from the MDF are led into the ADSL rack 100, of which the wires from the MDF on the telephone exchange side are connected to the corresponding connectors 216 and 218, and the wires from the MDF on the subscriber side are , Are connected to the corresponding connectors 220 and 222. In one embodiment, the connectors 216-222 may have electrodes with V-shaped blades and maintain the connection by pushing down the coated wiring here.

FIG. 3 is a front view of the DSL splitter unit 110 in a state where the splitter base 200 is accommodated. In the figure, each connector of the splitter board 200 housed in a unit housing 202, that is, a modem connector 204 and a test connector 206
Are shown in an orderly arrangement. ADS
The connectors of the plurality of cables from the L modem are connected to each of the modem connectors 204. Further, a cable from a test monitor device is connected to the test connector 206 as necessary.

FIG. 4 shows the DSL splitter unit 11
0 shows a rear view. The figure shows connectors 216 and 218 for connecting wiring from the MDF on the exchange side,
In addition, a state is shown in which connectors 220 and 222 for connecting wiring from the MDF on the subscriber side are arranged in an orderly manner.

FIG. 5 shows a wiring system diagram on the splitter board 200. Hereinafter, the circuit configuration on the splitter board and its function will be described with reference to FIG. As described above, the splitter board 200 includes a modem connector 204 connected to an ADSL modem, a test connector 206 enabling connection of a signal monitoring device, switch MDF connection terminals 208 and 210 connected to the switch MDF, and a subscriber. MDF connection terminals 212 and 214 connected to the MDF on the side. Splitter base 2
As shown in the figure, circuit wirings 230 for 20 channels are formed on 00. The circuit wiring 230 includes a signal line 230a extending from the modem connector 204 and a signal line 2 extending from the exchange MDF connection terminals 208 and 210.
30b, and signal lines 230c extending from the subscriber MDF connection terminals 212 and 214, which are interconnected at a junction 232. The circuit wiring 230 also includes a signal line 230d extending from the test connector 206, which is connected to the signal line 23d.
0c.

A DC blocking capacitor 234 is connected to the signal line 230a. The DC blocking capacitor 234 functions as a short circuit when the frequency of the input signal is high, and functions as a high-pass filter that cuts off the signal when the frequency is low. That is, the DC blocking capacitor 234 is
Splitter base 2 from subscriber MDF or exchange MDF
Of the signals input to 00, only the data signal (high frequency component) by ADSL is passed to the ADSL modem side, and the input of the voice signal (low frequency component) to the ADSL modem is blocked.

A low-pass filter 236 is connected to the signal line 230b. The low-pass filter 236 allows only the voice signal to pass to the exchange MDF, and the output of the data signal to the exchange MDF is prohibited here. An overvoltage protection circuit 238 is provided on the signal line 230c. Overvoltage protection circuit 23
8 protects the circuit on the splitter board 200 against overvoltages such as lightning overvoltage and switching overvoltage.

In the above circuit configuration, the MDF on the exchange side
The voice signal input to the signal line 230b via the exchange MDF connection terminals 208 and 210 from the switch and the data signal input from the ADSL modem to the signal line 230a via the modem connector 204 are superimposed at a connection point 232, From the signal line 230c to the subscriber MDF connection terminals 212 and 21
4 is output. This signal is transmitted to connectors 220 and 22
2 to the subscriber's MDF through the cable,
It is transported to the target home. As described with reference to FIG. 6, in the home, the audio signal and the data signal are separated by the home splitter and processed by the corresponding terminals (telephones or personal computers).

On the other hand, from the subscriber MDF to the subscriber MDF
Splitter board 2 via connection terminals 212 and 214
The signal input on the signal line 00 is transmitted from the signal line 230c to the signal lines 230a and 230b. Signal line 23
The signal transmitted to Oa is output by the DC blocking capacitor 234 to the modem connector 204 only of the high-frequency component, that is, only the data signal component. As a result, only the data signal of the input signal is output to the ADSL modem connected here. The signal transmitted to the signal line 230b is converted by the low-pass filter 236 into a low-frequency component, that is, only an audio signal component.
Output to the side. As a result, only the voice signal of the input signal is output to the MDF on the exchange side connected here. As described above, the audio signal and the data signal are superimposed and separated on the splitter board 200.

The DSL splitter unit 110
Can include a splitter base compliant with SDSL (symmetric DSL) communication and a splitter base compliant with the ADSL communication. SDS
For example, the splitter board for L communication can be configured not to transmit a voice signal. In this case, only the signal line connecting the ADSL modem and the subscriber MDF and the test signal line are wired.

The embodiment of the present invention has been described with reference to the drawings. The scope of application of the present invention is not limited to those described in the above embodiment, and based on the description in the claims,
Modifications and improvements are possible. The DSL splitter unit of the present invention may be configured in accordance with a DSL communication standard other than ADSL. Further, the DSL according to the present invention
The splitter unit can be installed in an intra-office MDF frame, in which case the connection wiring can be further simplified. Further, in the present embodiment, the splitter board 200
A connector 204 for connecting a cable from the ADSL modem is provided on the upper side.
4 may be used.

[0035]

According to the present invention, the following effects can be obtained. (1) To connect the splitter device and the MDF,
The need for a terminal board and connection cables is eliminated, the connection operation is greatly simplified, and the possibility of erroneous wiring is extremely reduced. (2) Space for connecting cable routing, which was conventionally required, becomes unnecessary, and the space in the DSL rack can be effectively utilized. (3) Since the connection configuration is simplified, it is easy to check and identify the cause when a communication failure occurs. (4) The number of components required for connection can be reduced and cost can be reduced. (5) In the present invention in which the test wiring is provided on the splitter board, the operator who manages the DSL rack apparatus can measure the line condition at the time of occurrence of the failure, and can quickly perform the failure determination and the periodic diagnosis. Become.

[Brief description of the drawings]

FIG. 1 is a front view of an ADSL mounting apparatus provided with a DSL splitter unit according to the present invention.

FIG. 2 is a perspective view of a DSL splitter unit according to the present invention.

FIG. 3 shows a DS with a splitter base accommodated therein
It is a front view of an L splitter unit.

FIG. 4 is a rear view of the DSL splitter unit.

FIG. 5 is a wiring system diagram on a splitter board.

FIG. 6 is a connection conceptual diagram when performing ADSL communication using an existing telephone line network.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 ADSL rack 102 Frame housing 104 Power supply unit 106 Monitoring unit 108 ADSL modem unit 110 Splitter unit 200 Splitter base 202 Unit housing 204 Modem connector 206 Test connector 208, 210 Switch MDF connection terminal 212, 214 Subscriber MDF connection terminal 216 218 Switch-side connector 220, 222 Subscriber-side connector 224 Rib 226 Rail 230 Circuit wiring 230a-230d Signal line 232 Junction point 234 DC blocking capacitor 236 Low-pass filter 238 Overvoltage protection circuit 600 Telephone exchange 602 Telephone exchange 604 MDF 606 Splitter device 608 ADSL modem 610 Home splitter 612 ADSL frame 614 Terminal board

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Goo Sugimura 1-6-11 Kita-Ueno, Taito-ku, Tokyo Nordbil F-term (reference) in Tokyo Metric Communication Co., Ltd. 5K073 AA07 CC06 CC24 CC38 GG03 GG08

Claims (11)

[Claims] 1. A DSL splitter unit comprising: a plurality of splitter bases for separating a voice signal and a data signal; and a housing for accommodating the plurality of splitter bases, wherein the housing is a telephone subscriber. Subscriber MDs connected to the MDF of the subscriber
F connector and a plurality of exchange side MDs connected to the MDF of the telephone exchange side
An F connector, wherein each of the splitter boards comprises: a modem connection terminal for connecting a predetermined channel wiring from a DSL modem; and a subscriber MDF for connecting to the subscriber MDF connector of the housing. A connection terminal; an exchange-side MDF connection terminal for connecting to the exchange-side MDF connector of the housing; and a base for interconnecting the modem connection terminal, the subscriber-side MDF connection terminal, and the exchange-side MDF connection terminal. A DSL splitter unit comprising: an upper circuit wiring; and a signal separating unit that separates the audio signal and the data signal passing through the circuit wiring on the substrate. 2. The signal separating means according to claim 1, wherein
A signal filter that permits the output of the audio signal from the F connection terminal side to the exchange side MDF connection terminal side and prohibits the output of the data signal from the modem connection terminal side to the exchange side MDF connection terminal side. D according to claim 1
SL splitter unit. 3. The signal separating means according to claim 1, wherein
A signal filter for permitting output of the data signal from the F connection terminal side to the modem connection terminal side and prohibiting output of the audio signal from the subscriber side MDF connection terminal side to the modem connection terminal side. The DSL according to claim 2
Splitter unit. 4. The DSL splitter unit according to claim 1, further comprising an overvoltage protection circuit provided on the circuit wiring. 5. The DSL splitter unit according to claim 1, wherein said circuit wiring includes signal lines for 20 channels. 6. The subscriber-side MDF connector and the exchange-side MDF connector of the housing, press-fit the subscriber-side MDF connection terminal or the exchange-side MDF connection terminal of the splitter base, and contact the contacts thereof. 2. A terminal insertion part for maintaining the following, and a wiring connection part for enabling connection of wiring from the MDF on the subscriber side or the MDF on the exchange side.
6. The DSL splitter unit according to any one of the above items. 7. Each of the splitter boards includes a test circuit wiring branched from the circuit wiring and a signal state of the signal, so that a state of a signal passing over the circuit wiring on the substrate can be monitored. The DSL splitter unit according to any one of claims 1 to 6, further comprising a test connection terminal for connecting a device to be monitored. 8. The DSL splitter unit according to claim 1, wherein each of the splitter boards is based on an ADSL communication system. 9. A splitter board compliant with the SDSL communication system, the splitter board having a modem connection terminal for connecting wiring for a predetermined channel from a DSL modem, and a subscriber MDF of the housing. 9. A subscriber MDF connection terminal for connecting to a connector, and circuit wiring on a board for interconnecting the modem connection terminal and the subscriber MDF connection terminal.
The DSL splitter unit according to 1. 10. The DSL according to claim 1, wherein:
A DSL rack equipped with a splitter unit. 11. The DSL rack according to claim 10, further comprising a DSL modem connected to each of the splitter boards.