JP3059312U - Home terminal board 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: A first receptacle for inserting and connecting an 8P modular jack, and second and third receptacles for inserting and connecting a 6P modular jack are formed in one frame so that an insertion opening appears on the surface of the decorative board. Attaching to the body, using a retaining terminal, connecting four wires of the eight-core cable drawn from the wall conduit to the first receptacle, and connecting two wires to the second receptacle, The other two wirings are connected to the third receptacle.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is used as a home wiring terminal board for ISDN (Integrated Service Digital Network). The present invention relates to an improvement of a terminal board installed on a wall of a building in order to use an ISDN communication line drawn from outside the building 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 two analog pair lines (corresponding to B1 and B2). When using such an ISDN line as a 64k digital signal, a computer device or a high-speed facsimile device is connected to the digital four-line DSU. Two telephones can be connected to the inside of the house to use two-line telephones. An analog facsimile can be connected to one of the two analog lines.

[0004] Therefore, when one building has a plurality of rooms, and a plurality of communication devices are connected to the ISDN communication lines in the plurality of rooms, respectively, the plurality of rooms are used. All necessary wiring to the room must be made. Conventionally, in such a case, (1) a two-core cable drawn from an outdoor wiring is directly drawn into a plurality of rooms using communication devices, and the two-core cable is connected to a DSU installed in each room. 2) Connect the two-core cable drawn from the outdoor wiring to the DSU installed at the point of drawing in, and further connect the 4-wire side wiring of this DSU to each room. (3) 2 drawn from the outdoor wiring A core cable is connected to the DSU installed at the point of entry, and a TA is installed near the DSU or integrally with the DSU, and the wiring on the 4-wire side of the DSU and the two lines on the analog side of the TA are connected to each other. Measures such as wiring in the room have been adopted.

[0005]

[Problems to be solved by the invention]

 Although the method (1) is a wiring configuration used by many users who use ISDN, it is not economical to provide a DSU in each room. In order to use both digital and analog lines 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 method (3) is an excellent method that can fully utilize the performance of the ISDN as an application form. However, in this method, it is necessary to wire a digital line (4 lines) and two analog lines (2 lines x 2) in each room, and when using conventional equipment, different types of terminal boards are used. It is necessary to provide a plurality of terminals, 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 easy to understand or is advantageous for replacing conventional general analog telephone lines.However, the wiring to the terminals in each room naturally has a long and short distance, and wiring work is inconvenient and generally inconvenient. Work man-hours increase. In addition, the problem of where to connect the terminating resistor in the wiring remains. If the position of the terminating resistor is not appropriate, complicated reflections will occur in the signal, and the characteristics of the ISDN may not be fully utilized.

The present invention has been made in such a background, and a convenient terminal plate 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. An object of the present invention is to provide a terminal board which does not require a terminal to be formed by making a large number of holes in a wall surface. An object of the present invention is to provide a terminal board capable of performing a wiring in a small manner by a small amount of wiring work. SUMMARY OF THE INVENTION It is an object of the present invention to provide a terminal board which can connect a terminating resistor to an optimal position at one end of a digital signal line and does not cause deterioration of signal characteristics. SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal board which has only one kind of components and can use ISDN lines in a plurality of rooms in various forms.

[0010]

[Means for Solving the Problems]

 According to 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 a digital communication device connected to the ISDN line. It is characterized by the structure of a home terminal board that can use analog telephones and others connected to the separated analog line in a plurality of rooms.

That is, the present invention includes one frame body that can be fixed to a wiring fitting embedded in the inner wall surface of a building, and one decorative board that is put on the surface of the frame body. The frame has a first receptacle into which an 8P modular jack is inserted and connected, and a second and a third receptacle into which a 6P modular jack is inserted and connected, respectively. 8 terminals which are attached so as to appear on the surface of the cable and which are connected to the respective cores of the 8-core cable which is drawn in from the pipe in the wall, 4 conductors of the terminals and the first terminal. Four wirings for connecting the four conductors of the receptacle, and two wirings for connecting the other two of the retaining terminals and the two conductors of the second receptacle. And this detention And two wirings for connecting the remaining two conductors of the terminal and the two conductors of the third receptacle.

Each of the retaining terminals is a link terminal for connecting two core wires to each other, and one of the link terminals is connected to each of the core wires of an eight-core cable pulled in from a pipe in the wall. Each of the core wires of the eight-core cable for extension drawn back into the pipe in the wall is connected to the other end, and the link terminal is electrically connected to the core wire by inserting a conductor tip of each of the core wires, and is mechanically connected. And a series circuit of an on / off switch and a terminating resistor provided between two pairs of conductors of the four conductors, respectively. It is desirable that the open / close switch is a semi-fixed type that can be operated by the tip of a driver.

[0013] A first receptacle for inserting and connecting an 8P modular jack to a frame fixed to a wiring fitting embedded in a house interior wall of a building, and a second receptacle for inserting and connecting a 6P modular jack. And a third receptacle are mounted so as to face the inside of the insertion chamber, and a decorative plate is placed on the surface of the frame.

[0014] Eight retaining terminals for connecting the respective core wires of the eight-core cable drawn from the pipe in the wall to one of the receptacles (for example, the first receptacle) are provided. Before attaching to the wiring fittings inside, the four conductors of this retaining terminal and the four conductors of the first receptacle are connected by four wires, and the other two of the retaining terminals are connected. And two conductors of the second receptacle are connected by two wires. Further, the remaining two conductors of the retaining terminals and the two conductors of the third receptacle are connected by two wires.

Each of the retaining terminals is formed by a link terminal such that one core wire of an 8-core cable and a core wire for wiring are connected to each other, and insertion holes are formed at both ends thereof. Then, the conductor end of each core wire of the eight-core cable drawn from the pipe in the wall is inserted into one of the insertion holes. Thus, the 8-core cable can be easily connected to the retaining terminal. In addition, the conductor ends of the respective core wires of the eight-core cable for extension pulled back to the pipe in the wall are inserted into the other of the insertion holes. This makes it possible to easily connect each extension core wire to the retaining terminal.

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

Since a series circuit of an open / close switch and a terminating resistor is provided between two pairs of conductors of the four conductors of the retaining terminals, the open / close switch is turned on at the terminal position. By performing the operation, the optimum position of the terminating resistor connected to one of the terminating positions of the digital signal line can be easily set.

The open / close switch is disposed in the first receptacle, forms a small operation knob having a shape operable by the tip of a driver or a claw, etc., and is turned on or off once and then vibrated or something is turned on. The structure that does not change the state set to ON or OFF by the external force of the contact level is configured.

With such a structure, one ISDN line can be conveniently used as a digital line or an analog line in a plurality of rooms of one building. Therefore, there is no need to install separate terminals for digital and analog lines, which eliminates the need to drill many holes in the wall. Wiring can be performed in a manner that is excellent in workability. As a result, the number of man-hours required for wiring work can be reduced. Furthermore, a terminating resistor can be connected to the optimal position of the terminating position of the digital signal line wiring, and the ISDN line can be used in various rooms in various rooms without deteriorating signal characteristics. be able to.

[0020]

[Embodiment of the invention]

[0021]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an outer shape on the front side of the embodiment of the present invention, FIG. 2 is a perspective view showing an outer shape on the back side of the embodiment of the present invention, and FIG. 3 shows a configuration of a main part of the embodiment of the present invention. It is a wiring diagram.

In the embodiment of the present invention, one frame 4 that can be fixed to the wiring fitting embedded in the inner wall surface of the building and one decorative plate 5 that covers the surface of the frame 4 are provided. A first receptacle 1 to which an 8P modular jack is inserted and connected, and a second receptacle 2 and a third receptacle 3 to which a 6P modular jack is inserted and connected, respectively, are mounted on the frame 4. Eight retaining terminals 17 to which each of the core wires 6a of the eight-core cable 6 is attached so that the jack insertion openings 1a, 2a and 3a appear on the surface of the decorative panel 5, and are drawn in from the conduit in the wall. And four wirings 9 connecting the four conductors 8 of the retaining terminals 17 and the four conductors 11 of the first receptacle 1, and the other wirings 9 of the retaining terminals 17 Two conductors 8 and Two wirings 10 connecting the two conductors 12 of the second receptacle 2, two remaining conductors 8 of the retaining terminals 17 and two conductors 13 of the third receptacle 3 And two wirings 14 for connecting the two.

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 pulled into one of the link terminals 7 a 7 a 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 terminals 7 are 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.

FIG. 4 is a diagram showing the entire configuration of the ISDN communication line drop-in side according to the embodiment of the present invention, and FIG. 5 is a diagram showing an example in which the in-house terminal board of the embodiment of the present invention is arranged in a building.

The ISDN line 21 is connected to a protector 22, and an ISDN home wiring box 24 is connected to the protector 22 by a two-core cable 23. The ISDN home terminal plate 20 according to the present invention is connected to the ISDN home wiring box 24 by the 8-core cable 6. FIGS. 4 and 5 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 not required. The spaces are connected by an 8-core cable 6.

By inserting an 8P modular jack into the first receptacle 1 of the ISDN home terminal board 20 arranged in each room as described above, the personal computer 26 can be directly connected to the digital computer via the digital line TA 25. Can be connected to the line. Further, the telephone 28 can be connected by inserting a 6P modular jack into the second receptacle 2 and the third receptacle 3.

FIG. 6 is a block diagram showing a configuration of a main part in the in-home wiring box for ISDN connected to the in-home terminal board according to the embodiment of the present invention.

The ISDN home wiring box 24 includes a terminal board 31 for connecting the ISDN line 21, a DSU 32 connected to the terminal board 31, and an analog terminal box connected to the DSU 32 via a 4-core cable. It is composed of an adapter 33 and a single-core terminal plate 34 connected to the DSU 32 via a four-core cable and connected to the analog terminal adapter 33 via two two-core cables.

The analog terminal adapter 33 is supplied with power of 100 V AC from a power outlet 35 and is connected to a battery unit 36 serving as an emergency power supply. The single-core terminal board 34 is provided with eight terminals, and the ISDN home terminal board 20 is connected to the single-core terminal board 34 via an 8-core cable.

Here, a description will be given of a wiring method in the case where the ISDN home terminal board 20 according to the embodiment of the present invention is installed in a plurality of rooms of one building. FIGS. 4 and 5 show examples of installation at five locations.

First, as shown in FIG. 6, each core wire 6a of the eight-core cable 6 from eight terminals of the single-core terminal board 34 provided in the in-house wiring box 24 for ISDN is shown in FIGS. 2 and 3. It is connected to the terminal 7a of each link terminal 7. 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. Thus, the open / close switch 15 shown in FIG. 3 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 6a of the eight-core cable 6 inserted into the respective link terminals 7, the frame body 4 is fixed to the wiring fitting embedded in the inner wall of the building using screws. Then, a decorative plate 5 is put on the surface of the frame 4 as shown in FIG. 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 using the ISDN home terminal board 20, an 8P modular jack connected to the personal computer 26 via a digital line TA 25 is used as the first jack shown in FIG. Lift the lid 1b of the modular jack insertion opening 1a of the receptacle 1 in the direction of the arrow and insert it. As a result, the personal computer 26 is connected to the ISDN line via the DSU 32 in the home wiring box 24 for 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 8-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 ISDN home terminal board 20 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 24 for ISDN 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 tip of each cut core wire 6a on the DSU 32 side is inserted into the insertion hole 27a of the link terminal 7, and each core wire 6a on the end side is inserted into the insertion hole 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 necessity of installing 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.

[0044]

[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 for drilling a large number of holes in the wall to install terminals, thereby reducing wiring work. Furthermore, since the termination resistor can be connected to the optimal position of the termination position of the digital signal line wiring by a very simple operation, the signal characteristics can be reduced and a single type of component can be used for multiple rooms. Can use the ISDN line in various forms.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external shape of a front side of an embodiment of the present invention.

FIG. 2 is a perspective view showing the appearance of the rear side of the embodiment of the present invention.

FIG. 3 is a wiring diagram showing a configuration of a main part of the embodiment of the present invention.

FIG. 4 is a diagram showing an entire configuration of an ISDN communication line drop-in side according to the embodiment of the present invention.

FIG. 5 is a view showing an example in which the in-home terminal board according to the embodiment of the present invention is arranged in a building.

FIG. 6 shows an ISDN connected to a terminal board in a home according to an embodiment of the present invention.
The block diagram which shows the structure of the principal part in a wiring box in a house.

[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 Opening / closing switch 15a Operation knob 16 Terminating resistor 17 Detent terminal 20 ISDN home terminal board 21 ISDN line 22 Protector 23 2-core cable 24 ISDN home wiring box Reference Signs List 25 TA for digital line 26 Personal computer 27a, 27b Insertion hole 28 Telephone 31 Terminal board 32 DSU 33 Analog terminal adapter 34 Single core terminal board 35 Power outlet 36 Battery section

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

Claims (5)

[Utility model registration claims] 1. A frame which can be fixed to a wiring fitting embedded in an inner wall surface of a house of a building, and one decorative plate which is put on a surface of the frame, wherein: The first receptacle into which the 8P modular jack is inserted and connected, and the second and third receptacles into which the 6P modular jack is inserted and connected, respectively, such that the respective modular jack insertion ports appear on the surface of the decorative board. Eight retaining terminals to which the respective core wires of the eight-core cable which are attached and drawn in from the in-wall conduit are respectively connected, four conductors of the retaining terminals and four of the first receptacles Four wires connecting the conductors, two wires connecting the other two conductors of the retaining terminal and the two conductors of the second receptacle, and The remaining two of them I, characterized in that it includes two wires and which connects the two conductors of the conductor third receptacle
Home terminal board for SDN. 2. The terminal according to claim 1, wherein each of the retaining terminals is a link terminal for connecting two core wires to each other, and one of the link terminals is connected to each of the core wires of an eight-core cable pulled in from a pipe in the wall. The in-home terminal board for ISDN according to claim 1, wherein each core wire of the extension eight-core cable connected to the other end and drawn back into the wall conduit is connected to the other end. 3. The link terminal includes a spring terminal that is electrically connected to the core wire by inserting a conductor tip of each core wire and mechanically holds the core wire.
The in-home terminal board for ISDN as described. 4. The terminal terminal board for ISDN according to claim 3, further comprising a series circuit of an open / close switch and a terminating resistor provided between two pairs of conductors forming a pair of the four conductors. 5. The I-type switch according to claim 4, wherein said open / close switch is a semi-fixed type operable by a tip of a driver.
Home terminal board for SDN.