JPH0448068Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a connection adapter for connecting a button telephone device to a communication terminal such as a telephone conference device or a facsimile.

[Conventional technology and problems]

In recent years, key telephone devices have come into widespread use as telephone equipment in small offices such as branches and branch offices that utilize multiple telephones.

On the other hand, in such offices, there is a growing need to communicate with the head office, other branches, sub-offices, other companies, etc. using two-wire communication terminals such as teleconferencing devices and facsimiles. It's coming.

By the way, when a two-wire communication terminal such as a telephone conference device is used by connecting it to a button telephone device, the following method has conventionally been used.

FIG. 3 is an explanatory diagram showing the conventional method, in which a 4-wire key telephone main device A and key telephones B ₁ , B ₂ , . . .
In the button telephone device consisting of Bx, security machine D
and the key telephone main unit between the lines L ₃₁ , L ₃₂ , L ₃₃ , L ₃₄
(for example, L ₃₄ ), converter E and modular jack F ₁ and modular plug.
Through the modular rosette F consisting of _F2 ,
A method for connecting to a telephone conference device C is shown.

From the button telephone main device A to each telephone B ₁ , B ₂ ,...
..., Bx is usually wired in a star shape with a 4-core cable, with 2 cores used for telephone calls and the other 2 cores for control. (Depending on the model, there are even more control lines, and some have six wires in total.) Therefore, each telephone is connected to the key telephone main unit A.
A 4-pole modular jack is usually provided as a cable connection device for attaching B ₁ , B ₂ , ..., Bx, and it is not possible to connect a 2-pole modular plug of a standalone telephone to this. .

Therefore, in order to connect the telephone conference device to the four-wire key telephone device, there is no choice but to branch out to the safety device D and the key telephone main device A as described above.

By the way, if you want to formally and permanently install a teleconferencing device in a specific location, this type of construction is fine, but if you want to change the location of the conference as appropriate, or if you want to install it for trial use. for,
It would be troublesome to carry out construction work each time using such conventional methods, and there was a need for a simpler method.

The purpose of this invention is to meet the above-mentioned needs and provide an inexpensive connection adapter that facilitates the connection of a two-wire communication terminal such as a telephone conference device to a button telephone device.

[Means for solving problems]

The connection adapter of this invention, which was created to solve the above problems, has a connection part for a button telephone, a connection part for a key telephone main unit, a connection part for a communication terminal, and an early make/break contact. The control line terminal of the button telephone connection part and the control line terminal of the button telephone main unit connection part are connected to each other, and the two armatures of the early make/break contacts are connected to the button telephone main unit connection part. Or, connect each of the two communication line terminals of the button telephone connection section, and connect each break contact or each make contact corresponding to the above two armatures to the button telephone main device connection section and the above of the button telephone connection section. Connect each of the two communication line terminals to which the armature is not connected, and connect the one of the above break contacts and make contacts that is not connected to the above communication line terminal to the above communication terminal connection part. They are characterized by being connected to each other.

〔Example〕

An embodiment of the connection adapter of this invention will be described below with reference to FIGS. 1 and 2.

The connection adapter G of the illustrated embodiment includes two armatures 11 ₁ , 11 ₂ , break contacts 12 ₁ , 12 ₂ ,
An early make/break contact 1 consisting of make contacts 13 ₁ , 13 ₂ , a connection part 2 for the button telephone main unit consisting of three 4-pole modular jacks, also a three 4-pole modular jack,
, a connection part 3 for a telephone telephone as a connection part for a communication terminal, and a connection part 4 for a telephone conference device as a connection part for a communication terminal consisting of a two-pole modular jack. It has a switch S.

Each of the above 4-pole modular jacks...
, , each have two communication line terminals and two control line terminals. That is, in the modular jack of the connection part 2 for the key telephone main device,
A ₁ and A ₄ are terminals for control lines, A ₂ and A ₃ are terminals for communication lines, and B ₁ and B ₂ for modular jacks and
C ₁ and C ₃ are control line terminals, and B ₃ and B ₄ and C ₂ and C ₄ are communication line terminals. In addition, the modular jack of the button telephone connection part 3,
In and, a ₁ , a ₄ , b ₁ , b ₂ and c ₁ , c ₃ are control line terminals, a ₂ , a ₃ , b ₃ , b ₄ and c ₂ , c ₄
is the communication line terminal. Each of the control terminals of the three modular jacks, , of the button telephone main device connection section 2 and each control line terminal of the corresponding modular jack, , of the button telephone connection section 3 are connected to each other. (Indicated by the dashed line in Figure 2;
A ₁ −a ₁ , A ₄ −a ₄ ; B ₁ −b ₁ , B ₂ −b ₂ ; C ₁ −c ₁ , C _3
−c3 ).

In this embodiment, three modular jacks, . What is provided is, for example, a modular jack for a button telephone main device M that is connected to the button telephone main device connection part 2 by a four-core cable 5 having modular plugs P ₁ and P ₂ at both ends, and a button telephone main device. This is because the positions of the control line terminal and communication line terminal of the modular plug connected to the 4-core cable 6 of the button telephone Q connected to the connection part 3 differ depending on the product specifications.
The number of modular jacks and other connection ports in the button telephone main device connection section 2 and the button telephone connection section 3 and the combination of the positions of the control line terminals and the communication line terminals are limited to the illustrated embodiment. It's not something, it's optional.

In the above embodiment, the armature 11 ₁ of the early make/break contact 1 is connected to the communication line terminals A ₃ , B ₃ , C ₄ of the modular jack, , of the button telephone main unit connection part 2, Another armature 11 ₂ is connected to the remaining communication line terminals A ₂ , B ₄ , and C ₂ of the button telephone main device connection section 2 .
Break contact 1 of early make break contact
2 ₁ is connected to the communication line terminals a ₃ , b ₃ , c ₄ of the modular jack of the button telephone connection part 3,
Another break contact 12 ₂ is connected to the remaining communication line terminals a ₂ , b ₄ , c ₂ of the button telephone connection section 3.
are connected to each.

On the other hand, the make contacts 13 ₁ and 13 ₂ of the early make/break contact 1 are connected to the connection part 4 for the telephone conference device.
The two terminals T ₁ of the two-pole modular jack of
connected to T ₂ respectively. Of course, break contact 12 of early make break contact 1
₁ and 12 ₂ to the terminals T ₁ and T ₂ of the modular jack of the connection part 4 for telephone conference equipment, and connect the make contacts 13 ₁ and 13 ₂ to the terminals T 1 and T 2 of the modular jack of the connection part 3 for button telephones. Communication line terminals a ₂ , a ₃ ;
b ₃ , b ₄ ; c ₂ , C ₄ may be connected, or the armatures 11 ₁ , 11 ₂ may be connected to the communication line terminals of the button telephone connection part 3 and the break contacts 12 ₁ , 12 ₂
and the make contacts 13 ₁ , 13 ₂ to the communication line terminals A ₂ , A ₃ ; B ₃ , B ₄ ;
They may be connected to either C ₂ or C ₄ or the terminals T ₁ and T ₂ of the telephone conference device connection section, respectively.

In order to use the connection adapter G of the illustrated embodiment, terminals N ₁ , N ₂ and R ₁ , R ₂ on the modular jack of the button telephone main device M and the modular plug of the button telephone Q are for communication line connection. Then, the button telephone main device M is connected to the modular jack by the four-core cable 5, the modular plug of the button telephone Q is connected to the modular jack, and the telephone conference device is connected to the modular jack.
Connect the TE 2-pole modular plug to the modular jack. If the changeover switch S of the early make/break contact 1 is set to the button telephone side, normal calls can be made, received, and communicated with the button telephone Q via the key telephone main device M. be able to.

To conduct a conference call, after calling the other party's phone to participate in the conference from the button telephone Q, or by switching the changeover switch S to the conference call mode in response to a request for a conference call from the other party, you can make an early makeover. - The make contacts 13 ₁ and 13 ₂ of the break contact 1 come into contact with the armatures 11 ₁ and 11 ₂ , respectively, and the break contacts 12 ₁ and 12 ₂ are immediately separated from the armatures 11 ₁ and 11 ₂ . As a result, the two communication lines (terminals R ₃ and R ₄ ) of the key telephone Q are connected to the key telephone main unit M.
The two communication lines of the telephone conference equipment TE, which are disconnected from the communication lines (terminals N ₃ and N ₄ ) and connected to the terminals T ₁ and T ₂ of the two-pole modular jack, are connected to the early make/break contact 1. Make contacts 13 ₁ , 13 ₂ ,
The armatures 11 ₁ , 11 ₂ are connected to the communication line terminals N ₃ , N ₄ of the modular jack of the button telephone main device M via the terminals B ₃ , B ₄ of the modular jack and the 4-core cable 5. , it becomes possible to hold a conference call with the other party's conference phone device.

In addition, when the early make/break contact 1 is switched by the changeover switch S, the make contact 13
Until the break contacts _{12 1} , 12 ₂ contact the armatures 11 ₁ , 11 ₂ , the break contacts 12 ₁ , 12 ₂ contact the armatures 11 1 , 11 ₂ .
11 It has a mechanism that does not leave ₂ , and it works in the same way in the reverse case. Therefore, upon switching, there is no risk that the connection between the central office line entering and exiting the key telephone device M, the key telephone device Q, and the telephone conference TE device will be disconnected.

In the above embodiment, the key telephone device has four
Although the explanation has been made for the case of a wire type, this invention can of course be applied to the case of a 6-wire type (2 communication lines + 4 control lines), and a 2-wire communication terminal can be applied to the above embodiment. It includes, but is not limited to, facsimile and the like.

[Effect of idea]

As explained above, the connection adapter of this invention can easily connect a button telephone device to a telephone conference device, etc. by simply connecting a connecting device such as a modular plug to a predetermined connection part made of a modular jack, etc.
A wire communication terminal can be connected, and the structure is simple and can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of one embodiment of the connection adapter of this invention, Fig. 2 is a schematic front view of the connection adapter of this embodiment, and Fig. 3 is a two-wire communication terminal for a button telephone device. FIG. 2 is an explanatory diagram showing an example of a conventional method for connecting. 1...Early make/break contact, 3...
Connection part for key telephone main device, 3... Connection part for button telephone, 4... Connection part for telephone conference device (connection part for communication terminal), 11 ₁ , 11 ₂ ... Armature, 1
2 ₁ , 12 ₂ ... Break contact, 13 ₁ , 13 ₂ ...
Make contacts, A ₁ , A ₄ , B ₁ , B ₂ , C ₁ , C ₃ ... Control line terminals for the connection part for the button telephone main unit, A ₂ , A ₃ ,
B ₃ , B ₄ , C ₂ , C ₄ ...Communication line terminals of the main unit connection part for key telephone, a ₁ , a ₄ , b ₁ , b ₂ , c ₁ , c ₃ ... Connection part for key telephone control line terminals, a ₂ , a ₃ ,
b ₃ , b ₄ , c ₂ , c ₄ ...Communication line terminal of the button telephone connection part, M...Button telephone main device, Q...Button telephone, TE...Telephone conference device (communication terminal) .

Claims (1)

[Scope of utility model registration request] It is equipped with a connection part for a button telephone, a connection part for a key telephone main device, a connection part for a communication terminal, and an early make/break contact, and a terminal for a control line of a connection part for a button telephone and a connection part for a key telephone main device. The control line terminals of the connection part are connected to each other, and the two armatures of the early make/break contact are respectively connected to the two communication line terminals of the button telephone main device connection part or the button telephone connection part, and the above-mentioned Connect each break contact or each make contact corresponding to the two armatures to the two communication line terminals of the button telephone main device connection section and the button telephone connection section to which the above armatures are not connected. , A connection adapter characterized in that the break contact and the make contact, which are not connected to the communication line terminal, are respectively connected to the communication terminal connection section.