JP2001045179A - Analog u-turn line laying adaptor for isdn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify an analog U-turn line laying work attended with an laying work of an ISDN line and to eliminate connection mistake of wiring in the case of connection change between a digital line and the analog line. SOLUTION: One digital line leading-in side adaptor A is provided with a digital line connection module 1, a digital line leading-in side extension line connection module 2 of a 4-pole or over, one analog U-turn line connection module 3 or over through interconnection wiring as shown in Figure, and the other TD/DSU side adaptor B is provided with a TD/DSU side extension line connection module of a 4-pole or over, a TA/DSU digital line connection module, and one TD/DSU analog line connection module 6 or over through interconnection wiring as shown in Figure. The both of the adaptors A, B are used as one set. Moreover, the adaptor A is incorporated with a connection changeover switch 11 or the like between a digital line and an analog line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION With the recent spread of personal computers and the Internet, the number of homes introducing ISDN lines has been increasing year by year. The present invention has been developed for laying ISDN lines for ordinary households, and is used when TA / DSU equipment is installed at a position distant from an existing telephone line entrance modular outlet, and when an existing telephone is installed. And fax machines are installed near the existing telephone line entrance modular outlets.
The present invention relates to an analog U-turn line laying adapter for SDN and its connection circuit.

[0002]

2. Description of the Related Art A general method of a conventional TA / DSU installation work for introducing an ISDN line will be briefly described. First of all, modular telephone outlets in ordinary households are installed in locations where existing telephones and fax machines are most accessible, but personal computers are installed at work desks and other places. Because of this, there is a fact that it is often installed away from the existing telephone line entrance modular outlet. Further, since the TA / DSU device needs to be connected to the personal computer separately from the telephone line by an RS232C cable or the like, there is a restriction that the TA / DSU device must be installed near the personal computer.

[0003] Therefore, as the construction contents, wiring to the existing telephone line entrance modular outlet and the digital input modular jack of the TA / DSU equipment installed at a distant position are laid, and further, the TA / DSU equipment is installed. U-turn wiring is laid from the analog line modular jack to the conventional telephone or fax machine modular jack.

[0004] As a method of laying work performed by a first general contractor, the only thing that can be used for ISDN line laying work at present is that there is only a 6-pole, 2-core modular outlet. Is done in a way. First, two 6-pole 2-core modular outlets are added near the existing telephone line entrance modular outlet, and two 6-pole 2-core modular outlets are also installed near the TA / DSU equipment.

[0005] From the first 6-pole 2-core modular outlet added near the existing telephone line entrance modular outlet, to the first 6-pole 2-core modular outlet provided near the TA / DSU equipment. 6-pole 2 connected to a 2-core telephone line and placed near another TA / DSU device
From the core modular outlet to another 6-pole two-core modular outlet added near the existing telephone line entrance modular outlet, a method is used in which a two-core telephone line is returned as an analog U-turn line.
The existing telephone line inlet modular outlet, the first 6-pole 2-core modular outlet added near it, and the TA / DSU equipment and the 6-pole 2-core modular outlet have modular connectors at both ends. Connected with telephone modular cable.

[0006] Further, when the line of the fax machine is returned by U-turn wiring due to a dial-in contract or the like, a 6-pole 2-core modular outlet is further added one by one, and a third two-core telephone line is run. I have. However, in the general construction method described above, there is a construction that uses a 4-core or 6-core wire for communication equipment, and the construction method differs depending on the contractor.

At present, the reason that the general construction method described in detail above is most frequently adopted is that no change is made to the existing telephone line entrance modular outlet, so that it is necessary to return to an analog line at a later date. When you do, N
This is because the original state can be restored only by switching the line on the TT side. As a method of the laying work performed by the second general contractor, a telephone service telephone line is directly connected to an extension line and the TA / D
The construction method of connecting to the first 6-pole 2-core modular outlet provided near the SU equipment is sometimes performed, but if it is necessary to return to the analog line, connect the wiring to the original state. It needs to be replaced.

[0008] In addition, in a building where a TA / DSU is installed in a room having a wall-mounted modular outlet connected to a telephone outlet from a modular outlet through a pipe, the existing two-core telephone line is replaced with a four-core telephone line. Replace the buried modular outlets on the TA / DSU installation side with two outlets and branch and wire them. One set is returned as an analog U-turn line for telephones to the existing telephone line entrance modular outlet, and the other set is behind the wall. Directly connected to the service line. In some cases, two 2-core telephone lines may be used instead of 4-core telephone lines.

[0009]

SUMMARY OF THE INVENTION
Issues related to TA / DSU installation work accompanying the introduction of SDN lines include the following. The first problem is that in the laying work method performed by the contractor,
In addition to increasing the number of core modular outlets, depending on the construction method, the number of telephone lines to be laid also increases, so it takes time and effort to complete the construction, and the work itself has a poor appearance and is used for construction. There is a problem that the cost of parts to be used becomes high.

The second problem is that in order to perform telephone wiring work other than a modular cable, three types of analog qualifications are required, and TA / DS as described in the section of the prior art is required.
The installation work of U cannot be done by individuals. For this reason, there are problems that it takes days to complete the wiring work requested by the contractor and that a construction fee is required.

A third problem is that if the telephone line has not been switched from an analog line to a digital line at the time when the contractor has completed the preceding laying work, the NTT side may have to wait until the digital line switching work is completed. In the meantime, the wiring circuit is in a loop state so that existing telephones and faxes can be used, but it is necessary to disconnect the completed TA / DSU equipment once. For this reason, even if the method of changing the connection is described in advance verbally, there are many users who cannot actually connect well, and there are many cases where a contractor has to meet at the time of the line switching work.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and simplifies wiring work for ISDN line installation contractors, as well as the number of extension lines and the number of modular outlets to be laid during the laying work. In addition, if the construction is completed in advance, it is possible to prevent an error in wiring change after the digital line migration even if the ISDN wiring contractor does not attend at the time of telephone line switching work. And

[0013] Not only for construction contractors,
An object of the present invention is to provide an analog U-turn line laying adapter for ISDN that enables even a person who does not have a construction qualification such as a kind to easily and surely perform clean wiring work.

[0014]

A first means for achieving the above object is that one of the digital line drop-side adapters comprises a digital line connection module and a 4-pole or more digital line drop-side extension line connection. Module and one or more analog U-turn line connection modules are provided, and the L1 and L2 terminals of the digital line drop-in side extension line connection module are internally connected to the digital line connection module. The L3 and L4 terminals of the drop-in side extension line connection module and the arbitrarily increased terminals are sequentially internally connected to the one or more analog U-turn line connection modules. / DSU side adapter is 4 poles or more TA / D
SU side extension line connection module, TA / DSU digital line connection module, and one or more TA / DSU
An analog line connection module is provided, and the terminal numbers of the TA / DSU side extension line connection module are made to correspond to the terminal numbers assigned to the digital line drop-in side extension line connection module, and L1 and L2 are set. TA /
Internally connected to the DSU digital line connection module,
3, L4 terminals, and arbitrarily increased terminals thereafter are sequentially connected internally to the one or more TA / DSU analog line connection modules, and both are used as one set. is there.

The U-turn line laying adapter for ISDN of the first means operatively serves as a relay outlet of an extension line. The use of the U-turn line laying adapter for ISDN in the ISDN wiring work makes it possible to easily and neatly perform the connection work using an extension telephone line or the like.

A second means is to incorporate a switch for switching between a digital line and an analog line on the side of the digital line lead-in side adapter. The L1 and L2 lines of the module are connected to the L1 and L2 terminals of the extension line connection module, and when the connection switch is on the analog line side, the L1 and L2 lines are connected to the analog U-turn line connection module. It is configured as follows.

Operationally, by setting the connection changeover switch to the analog line side when the telephone line is not switched from the analog line to the digital line at the time when the pre-laying work of the ISDN line is completed,
The conventional telephone device can be used without changing the connection with the TA / DSU device once completed in the preceding laying work. By setting the connection changeover switch to the analog line side, the L1 and L2 lines toward the ISDN device are cut off, and the L1 and L2 lines are switched and connected to an analog U-turn line connection module.

The third means is to incorporate a connection switching loop switch on the side of the TA / DSU side adapter, and by turning on the connection switching loop switch, the TA / DSU is connected to the extension line connection module.
The circuit to the digital line connection module and the TA / DSU analog line connection module is cut off, and the L1 and L2 lines of the extension line connection module are connected to the L3 and L4 lines. Things.

Operationally, as in the second means, the ISDN
When the telephone line has not been switched from the analog line to the digital line at the time when the pre-laying work of the line has been completed, the connection switch is set to the analog line side so that the TA / The conventional telephone device can be used without changing the connection with the DSU device. By setting the connection changeover switch to the analog line side, the connection with the ISDN device is cut off and L1, L
A loop circuit connecting the two lines to L3 and L4 is formed.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention. The first means described in the Means for Solving the Problems section is shown. In FIG. 1, one digital line drop-in side adapter (A) includes a digital line connection module (1), a 6-pole 4-core type digital line drop-in side extension line connection module (2), and one analog A U-turn line connection module (3) is provided. And 6
The central two terminals of the digital line connection side extension line connection module (2) of 4-pole type are internally connected to the digital line connection module (1) as L1 and L2, and the other two terminals are L3 and L4. Internally connected to the analog U-turn line connection module (3).

The other TA / DSU side adapter (B)
Is a 6-pole, 4-core TA / DSU side extension line connection module (4), a TA / DSU digital line connection module (5), and one TA / DSU analog line connection module (6). Has been deployed. And the TA /
Assuming that the terminal number of the DSU-side extension line connection module (4) corresponds to the terminal number assigned to the digital line drop-in side extension line connection module (2), L1 and L2 are used for TA / DSU digital line connection. Internally connected to module (5), terminals of L3 and L4 are TA /
Internally connected to the DSU analog line connection module (6).

The connection modules of the U-turn line laying adapter for ISDN shown in FIG. 1 all use female modular jacks.

A brief description of a method of use in actual laying work is as follows. The digital line service adapter (A) is fixed to a wall near the telephone outlet existing modular outlet (C) by screws, and the TA / DSU adapter ( B) is screwed to a wall near the TA / DSU device. Then, the telephone line entrance existing modular outlet (C) and the digital line connection module (1) are connected to a two-core modular cable (7) having a modular connector at both ends.
Connect with.

The digital line service side extension line connection module (2) and the TA / DSU side extension line connection module (4) are connected to each other with a four-core modular cable (8) having modular connectors. The TA / DSU digital line connection module (5) and the digital line IN outlet of the TA / DSU device are connected by a two-core modular cable (7). The TA / DSU analog line connection module (6) and the analog line OUT receptacle of the TA / DSU device are connected by a two-core modular cable (7). The telephone modular cable (9) is connected to the analog U-turn line connection module (3).

As described above, in actual use, by using both the digital line drop-in side adapter (A) and the TA / DSU side adapter (B) as one set, the ISDN laying work with U-turn wiring can be performed. Simple and clean wiring can be implemented. In the present embodiment,
Since it does not modify the existing modular outlet (C), the telephone line service entrance can be easily constructed without a contractor.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, since the digital line drop side extension line connection module (2) and the TA / DSU side extension line connection module (4) use a 6-pole 6-core type, the analog U-turn line connection module is used. (3) and TA / D
Two SU analog line connection modules (6) are also provided. The digital line drop-side extension line connection module (2) and the TA / DSU side extension line connection module (4) are connected by a 6-core modular cable (10) with a modular connector at both ends.

FIG. 3 shows a third embodiment of the present invention. This shows a combination of the first and second means described in the Means for Solving the Problems section. A digital line and analog line connection switch (11) is built in the digital line lead-in side adapter (A). When the connection switch (11) is on the digital line side, a digital line connection switch is provided. L of module (1)
Lines 1 and 2 are L of extension line connection module (2)
1 and L2 terminals, and the connection changeover switch (1
When 1) is on the analog line side, the L1 and L2 lines are connected to the analog U-turn line connection module (3). The one shown in FIG.
The L3 and L4 lines going to the / DSU analog line connection module (6) are cut off simultaneously with switching to the analog line side.

FIG. 4 shows a fourth embodiment of the present invention. Similar to the third embodiment, a combination of the first and second means described in the section for solving the problem is shown. As shown in the figure, the L3 and L4 lines of the extension line connection module (2) are fixedly connected to the analog U-turn line connection module (3). According to this method, an analog U-turn line connection module (3)
And the TA / DSU analog line connection module (6) is a branch wiring, so that the analog modem can be used on the computer side even while the line construction is not completed, and the changeover switch can be simplified. There is.

FIG. 5 shows a fifth embodiment of the present invention. The first and third aspects described in the Means for Solving the Problems section
Are shown in combination. TA / DSU
A connection switching loop switch (12) is built in the side of the side adapter (B). By setting the connection switching loop switch (12) to the analog line side, the TA / DSU
Digital line connection module (5) and TA / D
The circuit to the SU analog line connection module (6) is cut off, and the L1 and L2 lines of the extension line connection module (4) are connected to the L3 and L4 lines.

FIG. 6 shows a sixth embodiment of the present invention. Digital line connection module (1) and TA / D
SU digital line connection module (5) and TA
The / DSU analog line connection module (6) is a male modular connector with a two-core modular cable. In this case, TA / DSU side adapter (B)
Should be used hanging behind the TA / DSU equipment. In this way, the U-turn wiring work can be performed very easily, and the number of parts to be prepared for the ISDN laying work is reduced.

FIG. 7 shows a seventh embodiment of the present invention. The digital line connection module (1) is a screw-type pin-type terminal, and the telephone line entrance existing modular outlet (C) shown in the above embodiment.
Can be used in place of the digital line service adapter (A) of the present invention, so that the installation work can be performed neatly.

In particular, in the case of this embodiment, as shown in FIG.
The L3 and L4 lines of the extension line connection module (2) are arranged in the center 2 cores of a 6-pole 4-core type and fixedly connected to the analog U-turn line connection module (3). In this case, the connection switch (1
When 1) is the SW-OFF side analog line side, the extension line connection module (2) and the analog U-turn line connection module (3) can be used in the branch as analog lines.

An advantage of this method is that when it is necessary to return to the analog line at a later date, the original analog line can be returned to a state where the original analog line can be used only by the ON / OFF switching operation of the connection switch (11). In that unusable modular jacks do not occur. In the case of the present embodiment, the telephone line entrance existing modular outlet (C) is replaced, so that three types of analog qualifications are required.

FIG. 8 shows an eighth embodiment of the present invention. Digital line connection module (1), digital line drop side extension line connection module (2), TA
Since the / DSU side extension line connection module (4) is a terminal pinched by screws, a 4-core wire or a 6-core wire for communication equipment can be used. The seventh
As in the case of the embodiment, the existing modular outlet (C) for replacing the telephone line service entrance is replaced, so that three types of analog qualifications are required.

FIG. 9 shows a ninth embodiment of the present invention. As shown in the drawing, the TA / DSU-side adapter (B) described in the above embodiment is only used when the digital line drop-in side extension line connection module (2) is a pin-type terminal with screws. As an alternative to (2), it is possible to use a pair of 6-pole 2-core modular outlets for ordinary telephones.

In this case, the TA / DSU-side extension line connection module (4) having four or more poles of the TA / DSU-side adapter (B) has two terminals of a pinching type with screws.
A 6-pole 2-core modular outlet for general telephones is used as a set of two, and is configured as a total of four. Note that, as in the case of the seventh embodiment, the existing modular outlet (C) for replacing the telephone line service entrance is replaced, so that three types of analog qualifications are required.

Although the first to ninth embodiments have been described above, the parts used in actual implementation and the shapes and structures applied to the parts can be arbitrarily determined as desired.
For example, as a cable for connecting the extension line connection module (2) and the extension line connection module (4), an 8-pole, 8-core straight cable for LAN having a modular connector at both ends can be used. 6 poles 4 indicated by
A cable other than a telephone cable modular cable may be used as long as it has a modular connector that satisfies the same number of poles as the core or the 6-pole 6-core type.

Finally, the method of laying work performed by the first general contractor, which is described in detail in the section of the problem to be solved by the invention,
FIGS. 10 and 12 show a method of laying work performed by a second general contractor. FIG. 11 shows a state where the wiring circuit is looped using a two-core modular cable so that an existing telephone or fax can be used when the telephone line is not generally switched from an analog line to a digital line. Is shown.

[0040]

The effects of the first means in the analog U-turn line laying adapter for ISDN of the present invention include the simplification of wiring work when introducing an ISDN line, and the laying of an extension line during the wiring work. Since the number and the number of modular outlets to be installed are reduced, the appearance of the wiring work is improved and the construction parts cost is reduced. In addition, since all wiring can be performed using modular cables, it can be used not only for construction contractors but also for people who do not have construction qualifications such as analog 3 types, easy, reliable and clean It can do a lot of wiring work.

The effect of the second means in the analog U-turn line laying adapter for ISDN of the present invention is as follows. The connection changeover switch is used to complete the ISDN wiring work even in the analog line state until the telephone line is switched to the digital line. TA / D
The conventional telephone device can be used without changing the connection with the SU device. Further, after the completion of the digital line switching work on the NTT side, it is sufficient to simply switch the connection changeover switch, and there is no fear that a wiring error may occur, so that the construction company does not have to meet.

The advantages of the method of the fourth embodiment are that the number of terminals of the line changeover switch can be reduced and the production cost can be reduced. During the period when the switching work is not completed, the TA / DSU and the digital line service side adapter
The point is that the analog U-turn line laying adapter for ISDN on the side of the side adapter can be connected to the analog line from both sides.

The effect of the third means in the analog U-turn line laying adapter for ISDN of the present invention is the same as the effect of the second means, even in the analog line state until the telephone line is switched to the digital line.
TA / DSU completed once in ISDN wiring work
The conventional telephone device can be used without changing the connection with the device.

In the same way as the second means, after completion of the digital line switching work on the NTT side where the date and time are set, it is only necessary to switch the connection switching switch, and there is no risk of wiring errors. This has the effect of eliminating the hassle of having to meet the line laying contractor.

In all the means of the present invention, when it becomes necessary to return to the analog line at a later date, the original analog line can be returned to a usable state only by switching the line on the NTT side or simply by switching the connection switch. Things.

As described above, the analog U-turn line laying adapter for ISDN of the present invention has a simple structure, can be manufactured at a low cost, and is excellent in function as described above and of high practical value. is there.

[Brief description of the drawings]

FIG. 1 is a wiring diagram showing a first embodiment and a state of use thereof.

FIG. 2 is a wiring diagram showing a second embodiment and a state of use thereof.

FIG. 3 is a wiring diagram showing a third embodiment and a state of use thereof.

FIG. 4 is a wiring diagram showing a fourth embodiment and a state of use thereof.

FIG. 5 is a wiring diagram showing a fifth embodiment and a state of use thereof.

FIG. 6 is a wiring diagram showing a sixth embodiment and a state of use thereof.

FIG. 7 is a wiring diagram showing a seventh embodiment and a state of use thereof.

FIG. 8 is a wiring diagram showing an eighth embodiment and a state of use thereof.

FIG. 9 is a wiring diagram showing a ninth embodiment and a state of use thereof.

FIG. 10 is described in detail in the problem to be solved by the invention.
It is a wiring diagram showing the 1st general construction method.

FIG. 11 is a wiring diagram showing a state where the wiring circuit is in a loop state in the first general construction method.

12 is described in detail in the problem to be solved by the invention section,
It is a wiring diagram which shows the 2nd general construction method.

[Explanation of symbols]

 A Digital line service side adapter B TA / DSU side adapter 1 Digital line connection module 2 Digital line service side extension line connection module 3 Analog U-turn line connection module 4 TA / DSU side extension line connection module 5 TA / DSU Digital line connection module 6 TA / DSU analog line connection module 11 Connection switch 12 Connection switch loop switch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuo Iwatani 3-8-73 Higashi Okino, Yokaichi-shi, Shiga F-term (reference) 5K027 BB01 CC02 KK01 KK02 KK06 5K101 LL03 MM06 NN40

Claims (3)

[Claims] A digital line connection side adapter (A) includes a digital line connection module (1) and a digital line connection module (4).
An extension line connection module (2) for a digital line or more, and one or more modules for connecting an analog U-turn line (3) are provided. ) L1 and L2 terminals are internally connected to the digital line connection module (1),
Extension line connection module for the digital line drop-in side (2)
L3 and L4 terminals, and terminals arbitrarily increased thereafter, are sequentially connected internally to the one or more analog U-turn line connection modules (3), and the other TA / DSU side adapter (B) shows T with four or more poles.
A / DSU side extension line connection module (4), TA
/ DSU digital line connection module (5) and one or more TA / DSU analog line connection module (6) are provided, and the terminal number of the TA / DSU side extension line connection module (4) is changed. L1 and L2 are internally connected to the TA / DSU digital line connection module (5) according to the terminal numbers assigned to the digital line drop-in side extension line connection module (2),
The L4 terminal and terminals arbitrarily increased thereafter are sequentially connected internally to the one or more TA / DSU analog line connection modules (6), and both of them are used as a set. An analog U-turn line laying adapter for ISDN and a connection circuit using the U-turn line laying adapter for ISDN. 2. A digital line / analog line connection switch (11) is built in the digital line lead-in side adapter (A), and when the connection switch (11) is on the digital line side, When the L1 and L2 lines of the digital line connection module (1) are connected to the L1 and L2 terminals of the extension line connection module (2) and the connection switch (11) is on the analog line side, The U-turn line laying adapter for ISDN according to claim 1, wherein the L2 line is configured to be connected to the analog U-turn line connection module (3). 3. A connection switching loop switch (12) is built in the TA / DSU side adapter (B) side, and when the connection switching loop switch (12) is turned on, an extension line connection module is provided. The circuit from (4) to the TA / DSU digital line connection module (5) and the TA / DSU analog line connection module (6) is cut off, and L1, L2 of the extension line connection module (4) is cut off. L2 line and L3, L4
The U-turn line laying adapter for ISDN according to claim 1, wherein the adapter is configured to be connected to a line.