JP3060337U - Home wiring box for ISDN - Google Patents

Abstract

(57) [Summary] [Problem] One ISDN in a plurality of rooms of one building
Make the line available as a digital or analog line. SOLUTION: One box which can be attached to an indoor wall or a pillar surface has a connection terminal of a pair of digital signal lines wired from a central office, a DSU connecting a subscriber line terminal to the connection terminal, and a DSU. Digital terminal inside the DSU (2
TA) to be connected to the pair, the entrance of the 8-core cable for indoor wiring, the analog terminal of the TA (1 pair x 2 lines) and D
Eight retaining terminals for connecting the digital terminals (two pairs) on the inside of the SU and connecting each core of the eight-core cable, and a power supply circuit for supplying a DC operating current to the TA are mounted.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is used as a home wiring box for ISDN (Integrated Service Digital Network). The present invention relates to a wiring box for performing indoor wiring inside a building in order to temporarily stop an ISDN communication line drawn in from outside the building and to use the ISDN communication line in various forms. .

[0002]

[Prior art]

 Conventionally, when telephone lines are led indoors, a protector was installed under the eaves of the building, etc., and the telephone line led indoors was provided on the indoor wall of the building with the protector as a relay point. A technique for wiring to a terminal board is known. In the case of a telephone line, the cable is a pair of core wires, and analog signals are transmitted to a pair of conductor wires wired from the central office. Terminals such as telephones or facsimile machines can be connected to the board for communication.

When a pair of communication lines wired from a central office are digital signal (ISDN 64 kbs) lines, a DSU (Digital Service Unit, digital line termination device) is provided in the home to provide a signal from the central office. When synchronizing and using a normal analog phone, connect a TA (Terminal Adapter) for analog to the output side of the DSU to perform digital-to-analog conversion and analog-to-digital conversion. It is necessary to do. Under current standards, the DSU office has two digital lines and the inside of the house has four digital lines. The DSU side of the TA has four digital lines, and the inside of the house has four analog pair lines (corresponding to B1 and B2). When using such an ISDN line as a 64k digital signal, a computer or a high-speed facsimile apparatus is connected to a digital 4-wire, and when a telephone is connected, a TA is used. Two telephones can be used by connecting two telephones to the inside of the house. An analog facsimile can be connected to one of the two analog lines.

[0004] Therefore, when there are a plurality of rooms in one building, and when a plurality of communication devices are used in the plurality of rooms, respectively, necessary wiring is performed in each of the plurality of rooms. There must be. Conventionally, in such a case, (1) the two-core cable drawn from the outdoor wiring is directly pulled into a plurality of rooms using communication devices, and is carried to each room using one DSU, or each room is Prepare a DSU, switch and connect the DSU to be used for the two-core cable. (2) Connect the two-core cable drawn from the outdoor wiring to the DSU installed at the point of entry, and then Wiring the four-wire side of the DSU to each room. (3) Connect the two-core cable drawn from the outdoor wiring to the DSU installed at the drawing point, and also near or integrated with the DSU. In some cases, TAs are provided, and four lines of the DSU and two lines of the analog side of the TA are wired to each room.

[0005]

[Problems to be solved by the invention]

 The above method (1) is a wiring configuration that is used by many users who have switched from a general telephone line to an ISDN line. However, it is inconvenient to carry a DSU in each room. Is not economical. Furthermore, in order to use both digital and analog circuits in multiple rooms, complicated wiring must be provided after the terminal board on the wall in each room.

In the method (2), a 64k digital signal can be directly used in each room, but it is inconvenient when a normal analog telephone is used. Users of ISDN lines often adopt this wiring configuration, and use another telephone line for analog telephones. This means that the advantages of ISDN are not fully utilized.

The above method (3) is an excellent method as an application form of ISDN. However, in this method, it is necessary to wire a digital line (4 lines) and an analog line (2 lines × 2) in each room, and when using conventional equipment, different types of terminals are used. It is necessary to provide a plurality of boards, so that many terminal boards are provided on the wall of the building.

In addition, even if there is a user who wishes to perform the wiring of the above method (3), a star-shaped wiring may be performed from a drop-in point of the ISDN line to a plurality of rooms, or There is a problem of how to make a bus connection in which the terminal boards of each room are sequentially connected in a manner based on the pull-in point. Star-shaped wiring is advantageous in that it is easy to understand, but wiring to the terminals in each room naturally has a longer or shorter distance, which makes wiring work inconvenient and increases man-hours. Also, the problem remains where to connect the terminating resistor in the wiring. If the position of the terminating resistor is not appropriate, complicated reflection of the signal may occur, and the characteristics of the ISDN may not be fully utilized.

[0009] The present invention has been made in such a background, and a convenient wiring that can use one ISDN line as a digital line or an analog line in a plurality of rooms of one building. The purpose is to provide a terminal box for the. An object of the present invention is to provide a terminal box which can perform a wiring in a small manner in which wiring work is small. An object of the present invention is to provide a terminal box that can use an ISDN line in a variety of forms in a plurality of rooms, regardless of the type of use. . The present invention aims to provide a terminal box that can reduce maintenance costs by using a commercial power supply and that can respond to a power outage without any operation. It is the purpose. SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal box which can easily display the usage of an ISDN line.

[0010]

Means for Solving the Problems In the present invention, when a pair of communication lines wired from a central office is an ISDN line, the DSU installed synchronizes with a digital signal from the central office and provides an ISDN. It is characterized by the configuration of an in-home wiring box that allows digital communication equipment connected to the line and analog telephones and the like connected to the separated analog line to be used in a plurality of rooms, respectively.

That is, the present invention provides a connection terminal of a pair of digital signal lines wired from a central office, a DSU having a subscriber line terminal connected to the connection terminal, and a digital terminal (2 The pair of TAs, the entrance of the 8-core cable for indoor wiring, the analog terminal of the TA (1 pair x 2 lines) and the digital terminal inside the DSU (2 pairs) are connected. Eight detent terminals to which the respective core wires of the eight-core cable are connected, and a power supply circuit for supplying a DC operating current to the TA are mounted on a single box that can be attached to an indoor wall or a pillar surface. It is characterized by having.

The eight retaining terminals are blocks including spring terminals that are electrically connected to the core wires by inserting the conductor ends of the respective core wires of the eight-core cable and mechanically hold the core wires. Preferably, the terminal is a terminal, and a plurality of the n block terminals are provided, and each of the eight electrodes of the plurality of n block terminals is connected in parallel to the n block terminals to form a star wiring. It can be configured.

[0013] Further, the power supply circuit includes a rectifier circuit having a commercial power supply as an input, a storage box for a dry cell, a voltage detection circuit for detecting that a predetermined DC voltage is present at an output of the rectifier circuit, When the DC current is present in accordance with the detection output of the circuit, the DC operating current is supplied from the rectifying circuit, and when there is no predetermined DC voltage at the output of the rectifying circuit, the rectifying circuit is automatically switched to output the DC operating current from the dry battery. A light emitting display for indicating the use state of the device at a position where the box is mounted on a wall or a pillar surface and can be visually recognized from the outside, wherein the light emitting indicator is provided with the DSU. A first light-emitting indicator indicating the synchronization state of the TA, a second light-emitting indicator indicating the use state of the first digital channel of the TA, and a second light-emitting indicator of the TA. A third light emitting display indicating a use state and a fourth light emitting indicator indicating a use state of a control channel of the DSU may be included. With this configuration, it is possible to recognize the use state of the analog terminals of the two lines.

[0014] A subscriber line terminal of the DSU is connected to a connection terminal of a pair of digital signal lines wired from a telephone office, and a TA is connected to the digital terminal (two pairs) inside the DSU. Furthermore, each core wire of an 8-core cable connected to the analog terminal of TA (1 pair × 2 lines) and the digital terminal inside the DSU (2 pairs) is connected to the eight retaining terminals, respectively. Connect a power supply circuit that supplies operating current. The DSU, TA and power supply circuit connected in this way are mounted on a single box and mounted on the indoor wall or pole.

Each of the retaining terminals is formed by a terminal for interconnecting two core wires, one core wire of an 8-core cable and a core wire for wiring, and a hole for inserting a tip of the core wire. Then, using the eight retaining terminals as one block terminal, the conductor ends of the respective core wires of the eight-core cable drawn from the pipe in the wall are inserted into one of the insertion holes. Thus, the 8-core cable can be easily connected to the retaining terminal. In addition, the conductor end of each core wire of the eight-core cable for extension pulled back to the pipe in the wall is inserted into the other of the insertion holes. Thereby, each core wire on the extension side can be easily connected to the retaining terminal.

In this way, the terminal and each core wire of the 8-core cable are simply electrically connected only by inserting the conductor tip, and the conductor tip inserted into the terminal formed in the spring terminal structure is mechanically connected. It is firmly held and can maintain the electrical and mechanical holding state for a long time.

When the in-home wiring is any type of wiring, the number of block terminals may be one. If it is already used in buildings where home wiring is laid, it may be difficult to use it as an insulated wiring. In that case, star wiring is used to reduce the number of the eight retaining terminals to one. As a block terminal, a plurality of n block terminals are provided on a substrate. Each of the eight electrodes of the plurality of n block terminals is connected in parallel across the n block terminals. Thus, a pair of digital signal lines wired from the central office can be distributed to a plurality of rooms by using the ISDN home wiring box according to the present invention.

The power supply circuit converts an AC power supply input from a commercial power supply into a DC power supply with a rectifier circuit, and detects an output of the rectifier circuit with a voltage detection circuit. When a DC voltage is detected according to the detection output of the voltage detection circuit, a DC operation current is supplied from the rectifier circuit. When the predetermined DC voltage is not detected by the voltage detection circuit, the switching circuit automatically switches the supply of the DC operation current to the dry cell side. As a result, it is possible to respond to a commercial power failure without any operation.

The box on which the DSU, TA, power supply circuit and block terminal are mounted may be provided with a light-emitting indicator indicating the use state at a position visible from the outside while being mounted on a wall or a pillar surface. This makes it possible to visually recognize whether or not a signal from the digital signal line is being transmitted, and whether or not the signal is being received by a digital device or an analog telephone.

In the light emission display, the first light-emitting indicator indicates the synchronization status of the DSU, the second light-emitting indicator indicates the use status of the first digital channel of the TA, and the third light-emitting indicator. The status of use of the second digital channel of the TA is indicated by the display. Further, the use status of the control channel is displayed by the fourth light emitting display.

[0021] As described above, according to the present invention, one ISDN line can be used as a digital line or an analog line in a plurality of rooms of one building. This eliminates the need for drilling a large number of holes in the wall to install terminals, and improves workability when performing wiring work for the first time such as new construction work. As a result, the number of man-hours for wiring work can be reduced.

[0022] Furthermore, regardless of the use form, the ISDN line can be used in various forms in a plurality of rooms by using one type of device. In addition, since a commercial power supply can be used, maintenance costs can be reduced, and even when the commercial power supply is interrupted, it can be handled without any operation. In addition, when the ISDN line is used, its use state is displayed by light emission, so that the use state can be grasped visually.

[0023]

[Embodiment of the invention]

[0024]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a main part of an embodiment of the present invention, and FIG. 2 is a perspective view showing a configuration of a first embodiment of the present invention.

In the first embodiment of the present invention, a connection terminal 37 of a pair of digital signal lines 21 wired from a central office, a DSU 32 having a subscriber line terminal 32a connected to the connection terminal 37, and a DSU 32 The TA33 connected to the home inside digital terminal (two pairs) 32b, the entrance port 38 of the 8-core cable 6 for indoor wiring, the analog terminal (one pair x two lines) 33a of the TA33 and the home inside digital terminal of the DSU 32 Eight retaining terminals 45 to which (two pairs) 39 are connected and the respective core wires of the eight-core cable 6 are connected, and a power supply circuit 36 for supplying a DC operating current to the TA 33 are provided on the indoor wall or pillar surface. It is mounted on one attachable box 51.

Each of the eight retaining terminals 45 is electrically connected to the core wire by inserting a conductor tip of each core wire of the eight-core cable 6 and mechanically retains the core wire. , And one block terminal 46 is formed by the eight retaining terminals 45.

The power supply circuit 36 includes a rectifier circuit 47 that receives a commercial power supply, a dry cell storage box 48, a voltage detection circuit 49 that detects that a predetermined DC voltage is present at the output of the rectifier circuit 47, When there is a DC voltage in accordance with the detection output of the voltage detection circuit 49, a DC operation current is supplied from the rectifier circuit 47. When the output of the rectifier circuit 47 does not have a predetermined DC voltage, the operation is automatically switched to dry battery. And a switching circuit 50 for supplying a DC operating current.

Further, a light emitting display 40 for indicating the use state of the apparatus is provided at a position where the case 51 is attached to a wall or a column surface and can be visually recognized from the outside, and the light emitting display 40 is synchronized with the DSU 32. A first light-emitting indicator 41 indicating the status, a second light-emitting indicator 42 indicating the use status of the first digital channel of the TA 33, and a third light-emitting indicator 42 indicating the use status of the second digital channel of the TA 33. And a fourth light-emitting indicator 44 indicating the use state of the control channel.

FIG. 3 is a diagram showing the overall configuration of the ISDN communication line drop-in side using the ISDN home wiring box according to the first embodiment of the present invention, and FIG. 4 is a diagram showing the ISDN home wiring box according to the first embodiment of the present invention. It is a figure which shows the example of wiring in the used building.

The digital signal line 21 is connected to a protector 22, and the ISDN home wiring box 24 according to the present invention is connected to the protector 22 by a two-core cable 23. The ISDN home terminal board 20 is connected to the ISDN home wiring box 24 by the 8-core cable 6. FIGS. 3 and 4 show an example in which five ISDN home terminal boards 20 are arranged. When a plurality of ISDN home terminal boards 20 are arranged in each room as described above, the mutual connection is made. The spaces are connected by an 8-core cable 6.

FIG. 5 is a perspective view showing the appearance of the front side of the in-home terminal board used in the first embodiment of the present invention, and FIG. 6 is the rear side appearance of the in-home terminal board used in the first embodiment of the present invention. FIG. 7 is a wiring diagram showing a configuration of a home terminal plate used in the first embodiment of the present invention.

The ISDN in-home terminal plate 20 is composed of one frame 4 that can be fixed to a wiring fitting embedded in the inner wall of the building, and one decorative plate 5 that is placed on the surface of the frame 4. The frame body 4 includes a first receptacle 1 into which an 8P modular jack is inserted and connected, and a second receptacle 2 and a third receptacle 3 into which a 6P modular jack is inserted and connected, respectively. Each of the modular jack insertion openings 1a, 2a and 3a is mounted so as to appear on the surface of the decorative board 5, and eight pullouts to which respective core wires 6a of the eight-core cable 6 drawn from the pipe in the wall are connected. A retaining terminal 17, four wirings 9 connecting the four conductors 8 of the retaining terminal 17 and the four conductors 11 of the first receptacle 1, The other two Wirings 10 for connecting the two conductors 8 and the two conductors 12 of the second receptacle 2, and the remaining two conductors 8 of the retaining terminals 17 and the two of the third receptacles 3. And two wirings 14 for connecting the conductors 13 to each other.

Each of the retaining terminals 17 is formed of eight pairs of link terminals 7 for connecting two core wires to each other, and is drawn into one of the link terminals 7 from the inside of the pipe in the wall. Each core wire 6a of the eight-core cable 6 is connected to each other, and each core wire (wiring) 9, 10 and 14 of the extension eight-core cable drawn back into the inner wall conduit is connected to the other terminal 7b.

The link terminal 7 is electrically connected to the core wires (wirings) 6a, 9, 10 and 14 by inserting the ends of the conductors into the insertion holes 27a and 27b shown in FIG. A spring terminal for holding the core wire is included, and an open / close switch 15 and a terminating resistor respectively provided between two pairs of conductors 11 forming a pair among the four conductors 11 built in the first receptacle 1. Sixteen series circuits are provided, and the opening / closing switch 15 is formed in a semi-fixed shape operable by the tip of a driver.

As shown in FIGS. 3 and 4, by inserting an 8P modular jack into the first receptacle 1 of the ISDN in-home terminal board 20 arranged in each room, a digital line TA (terminal adapter) 25 is inserted. , The personal computer 26 can be directly connected to a digital line. Further, the telephone 28 can be connected by inserting a 6P modular jack into the second receptacle 2 and the third receptacle 3.

Here, a description will be given of a wiring method when the ISDN in-house terminal board is installed in a plurality of rooms of one building with the ISDN in-house wiring box 24 as a base point. FIG. 3 and FIG. 4 show an example of installation at five locations.

First, each core wire 6a of the 8-core cable 6 connected to the eight terminal terminals 45 of the block terminal 46 provided in the ISDN home wiring box 24 is connected to each link terminal 7 shown in FIG. 6 and FIG. Terminal 7a. This connection can be made easily by inserting the conductor tip of each core wire 6a of the eight-core cable 6 into the insertion hole 27a. The electrical connection is made by this insertion operation, and the inserted core wires 6 a are mechanically held by the spring terminals of the link terminals 7.

When the ISDN home terminal board 20 is arranged in only one room, the room is located at the end, so that the operation knob 15a of the open / close switch 15 shown in FIG. To operate. As a result, the open / close switch 15 shown in FIG. 7 is turned on, and the terminating resistor 16 is connected in series. Once the operation knob 15a is operated to the ON side, the ON state is maintained unless the operation knob 15a is intentionally operated to the OFF side.

With the respective core wires 6 a of the eight-core cable 6 inserted into the respective link terminals 7 in this manner, the frame 4 is fixed to the wiring fitting embedded in the inner wall surface of the building using screws. Then, as shown in FIG. 5, a decorative plate 5 is put on the surface of the frame 4. Thereby, the in-home terminal board 20 for ISDN is installed on the wall surface in the home.

When a personal computer 26 is used by using the ISDN home terminal board 20, an 8P modular jack connected to the personal computer 26 via a digital line modem 25 is connected to the personal computer 26 shown in FIG. The lid 1b of the modular jack insertion opening 1a of one receptacle 1 is lifted in the direction of the arrow and inserted. As a result, the personal computer 26 is connected to the ISDN line via the DSU 32 in the home wiring box 24 for the ISDN.

When the telephone 28 is used, the 6P modular jack connected to the telephone 28 is similarly inserted by lifting the cover 2 b of the modular jack insertion opening 2 a of the second receptacle 2 in the direction of the arrow. I do. Thus, the telephone set 28 is connected to the ISDN line via the analog terminal adapter 33 and the DSU 32 in the ISDN home wiring box 24.

When two telephones 28 are used in one room, the 6P modular jack connected to the telephones 28 is inserted by lifting up the lid 3b of the mozara jack insertion opening 3a of the third receptacle 3. Can be connected to an ISDN line.

When the ISDN home terminal board 20 is additionally installed in another room, one end of each conductor 6 a of the eight-core cable 6 is inserted into the insertion port 27 b of the already installed ISDN home terminal board 20. The other conductor tip of each core wire of the 8-core cable 6 is inserted into the insertion port 27a of the inserted and added ISDN home terminal board 20. At this time, the operation knob 15a of the ISDN in-home terminal plate 20 that is initially set is turned off, and the operation knob 15a of the added ISDN in-home terminal plate 20 is operated to the on position.

When the home terminal board 20 for ISDN is additionally installed in another room, it can be easily added by performing the same connection operation. When a large number of ISDN home terminal boards 20 are arranged in this manner, only the operation knob 15a of the ISDN home terminal board 20 which is the final end is set to the ON position, and the other ISDN home terminal boards 20 are set. The operation knob 15a is set to the off position. As a result, the open / close switch 15 of the ISDN in-home terminal plate 20 at the last end is turned on, a series circuit of the terminating resistor is formed, and the signal reflection on the in-home wiring is gradually reduced. This configuration eliminates the need for an operation such as connecting a special terminating resistor to the receptacle.

A feature of the present invention is that the DSU 32 and a plurality of ISDN home terminal boards 20 are connected in series, and wiring is not individually performed in each room.

Therefore, when a new building is to be constructed, one 8-core cable 6 connected to the in-house wiring box for ISDN 24 is wired across each room, and the in-house terminal board 20 for ISDN is installed. At the position, a part of the 8-core cable 6 is pulled out, cut, and connected to the ISDN home terminal board 20.

That is, the cut ends of the core wires 6a on the DSU 32 side are inserted into the insertion holes 27a of the link terminals 7, and the core wires 6a on the end side are inserted into the insertion holes 27b. When the ISDN home terminal boards 20 are to be arranged in all the rooms, this connection operation is sequentially performed, and the operation knob 15a of the terminal ISDN home terminal board 20 is set to the ON position. In addition, if there is a room that does not need to be installed at present, the connection work is performed for the room that needs to be installed with the 8-core cable 6 remaining inside the wall. If it becomes necessary to install the ISDN home terminal board 20 at a later date, the same connection work can be performed by cutting the 8-core cable 6 at the installation position.

This eliminates the need to install the ISDN in-home terminal plate 20 by making a large number of holes in the wall surface, thereby reducing the number of wiring work.

When a digital signal is transmitted from the central office to the ISDN home wiring box 24 according to the present invention, the signal is transmitted from the connection terminal 37 of the pair of digital signal lines shown in FIG. Sent. The digital signal is synchronized by the DSU 32. If the signal is a signal to a digital signal device such as a computer device, the signal is sent to the ISDN in-home terminal board 20 via the retaining terminal 45 for the digital signal line. It is sent to one receptacle 1. In the case of a signal to an analog telephone, digital-to-analog conversion is performed by the TA 33, and the second receptacle 2 or the third receptacle 3 of the ISDN in-home terminal board 20 is passed through the analog signal line retaining terminal 45. It is sent to the receptacle 3.

The rectifier circuit 47 of the power supply circuit 36 mounted in the ISDN home wiring box 24 inputs a commercial power supply, rectifies the power, and supplies power to the TA 33 via the switching circuit 50. The state of this power supply is constantly detected by the voltage detection circuit 49. When the output of the rectifier circuit 47 has a predetermined DC voltage, the power supply from the commercial power supply is continued. When there is no predetermined DC voltage at the output of the rectifier circuit 47, the switching circuit 50 automatically switches to apply the DC voltage to the TA 33 using the dry battery in the dry battery housing box 48 as a power supply. As a result, it is possible to respond to a power outage without performing any operation even if the commercial power supply goes out. When the commercial power is restored, a predetermined DC voltage appears in the voltage detection circuit 49, and the switching circuit 50 automatically switches from the dry cell storage box 48 to the commercial power.

(Second Embodiment) FIG. 8 is a block diagram showing a configuration of a main part of a second embodiment of the present invention, and FIG. 9 is a perspective view showing a configuration of a second embodiment of the present invention.

In the second embodiment of the present invention, a plurality of block terminals 46 of the first embodiment are provided on the substrate. The TA 33 and each of the eight retaining terminals 45 constituting the plurality of n block terminals are connected in parallel by substrate wiring.

The second embodiment is used for a building in which a digital line is already connected. If the existing telephone line is installed by star wiring, it is difficult to wire the eight-core cable 6 again in a manner as described in the first embodiment. When the in-house wiring box for ISDN 24 according to the invention is installed, the star wiring is used, and the in-house wiring box for ISDN of the second embodiment is used to wire each block terminal 46 to a plurality of rooms. The core wire 6a of the cable 6 is inserted. As a result, as shown in FIGS. 10 and 11, it is possible to easily connect to the ISDN home terminal board 20 arranged in each room.

The configuration is the same as that of the first embodiment except that a plurality of block terminals 46 are mounted, and the same receiving operation is performed.

When such a star wiring is performed, the open / close switch 15 for the terminating resistor provided on the ISDN in-home terminal plate 20 is normally set to ON at any one place, so that the normal operation is performed. It can be performed.

[0057]

[Effect of the invention]

 As described above, according to the present invention, one ISDN line can be used as a digital line or an analog line in a plurality of rooms of one building. This eliminates the need to make a number of holes in the wall to install terminals, and improves workability when performing wiring work for the first time such as new construction work. This can reduce the man-hour for wiring work.

Further, regardless of the usage mode, the ISDN line can be used in various modes in a plurality of rooms by using one type of device. In addition, since a commercial power supply can be used, maintenance costs can be reduced, and even when the commercial power supply is interrupted, it can be handled without any operation. In addition, when the ISDN line is used, its use state is displayed by light emission, so that the use state can be grasped visually.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a first embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of the first embodiment of the present invention.

FIG. 3 is a diagram showing the overall configuration of the ISDN communication line drop-in side using the in-house ISDN wiring box of the first embodiment of the present invention.

FIG. 4 is a diagram showing an example of wiring in a building using the in-house wiring box for ISDN of the first embodiment of the present invention.

FIG. 5 is a perspective view showing the external shape of the front side of the in-home terminal plate used in the first embodiment of the present invention.

FIG. 6 is a perspective view showing the appearance of the rear side of the in-home terminal plate used in the first embodiment of the present invention.

FIG. 7 is a wiring diagram showing a configuration of a home terminal plate used in the first embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a main part of the second embodiment of the present invention.

FIG. 9 is a perspective view showing a configuration of a second embodiment of the present invention.

FIG. 10 is a diagram showing an entire configuration of an ISDN communication line drop-in side using an in-home wiring box for ISDN according to a second embodiment of the present invention.

FIG. 11 is a diagram showing an example of wiring in a building using the in-house wiring box for ISDN of the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st receptacle 1a, 2a, 3a Modular jack insertion opening 1b, 2b, 3b Lid 2 2nd receptacle 3 3rd receptacle 4 Frame 5 Decorative plate 6 8 core cable 6a Core wire 7 Link terminal 7a, 7b terminal 8, 11, 12, 13 Conductor 9, 10, 14 Wiring 15 Open / close switch 15a Operation knob 16 Terminating resistor 17, 45 Detent terminal 20 Home terminal plate for ISDN 21 Digital signal line 22 Protector 23 2-core cable 24 For ISDN Home wiring box 25 Digital line TA 26 Personal computer 27a, 27b Insertion hole 28 Telephone 31 Terminal board 32a Subscriber line terminal 32b Home inside digital terminal 32 DSU 33 TA 33a Analog terminal 36 Power supply circuit 37 Connection terminal 38 Drop-in port 39 Home 40 internal digital terminals Light indicator 41 First light-emitting indicator 42 Second light-emitting indicator 43 Third light-emitting indicator 44 Fourth light-emitting indicator 46 Block terminal 47 Rectifier circuit 48 Dry cell storage box 49 Voltage detection circuit 50 Switching circuit 51 Box

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 6, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

 ──────────────────────────────────────────────────の Continued on the front page (72) Kappei Ichimura 709-1 Dowa, Urawa-shi, Saitama Watanabe, Ltd.

Claims (6)

[Utility model registration claims] 1. A connection terminal for a pair of digital signal lines wired from a central office, a DSU having a subscriber line terminal connected to the connection terminal, and two (2) pairs of digital terminals inside the DSU. TA, entrance of 8-core cable for indoor wiring, analog terminal of the TA (1 pair x 2 lines) and digital terminal inside the DSU (2 pairs)
Are connected to each other and each of the core wires of the eight-core cable are connected to each other, and a power supply circuit for supplying a DC operating current to the TA is provided in a box that can be attached to an indoor wall or a pillar surface. An in-house wiring box for ISDN, characterized in that it is mounted on a housing. 2. The eight retaining terminals include a spring terminal that is electrically connected to the core wire by inserting a conductor tip of each core wire of the eight-core cable and mechanically holds the core wire. The I according to claim 1, which is a block terminal.
In-house wiring box for SDN. 3. A plurality of n block terminals are provided,
3. The in-home wiring box for ISDN according to claim 2, wherein each of the eight electrodes of the plurality of n block terminals is connected in parallel across the n block terminals. 4. A power supply circuit comprising: a rectifier circuit having a commercial power supply as an input; a storage box for a dry battery; a voltage detection circuit for detecting that a predetermined DC voltage is present at an output of the rectifier circuit;
When the DC current is present in accordance with the detection output of the voltage detection circuit, the DC operation current is supplied from the rectifier circuit, and when the output of the rectifier circuit does not have a predetermined DC voltage, the operation is automatically switched and the DC operation is performed from the dry battery. 3. The ISDN home wiring box according to claim 2, further comprising a switching circuit for supplying a current. 5. The ISDN home wiring box according to claim 4, further comprising a light-emitting indicator which indicates a use state of the apparatus at a position where the box is attached to a wall or a pillar surface and can be visually recognized from the outside. 6. The light-emitting indicator comprises: a first light-emitting indicator for indicating a synchronization state of the DSU; a second light-emitting indicator for indicating a use state of a first digital channel of the TA;
5. The ISDN home wiring according to claim 4, further comprising a third light-emitting indicator for indicating the use status of the second digital channel of the TA, and a fourth light-emitting indicator for indicating the use status of the control channel of the DSU. Box.