JPH05207538A - Home use telephone exchange system - Google Patents

Abstract

PURPOSE:To install a telephone receptacle in the vicinity of a telephone set. CONSTITUTION:Plural telephone receptacles B are connected to a telephone exchange A via an extension L2 and a control line L3. A telephone set C is removably connected to the telephone receptacles B. A telephone exchange A selects and forms a channel and the telephone set C makes external line talking and extension talking. Display such, as various calls and speech is implemented by the telephone receptacles B. A function section for the telephone set C and the telephone receptacles B is integrated in the telephone exchange A. An exposed type receptacle is adopted for the telephone receptacles B, which are installed in the vicinity of the telephone set C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home telephone exchange system capable of making an outside call and an extension call using a commercially available telephone.

[0002]

2. Description of the Related Art As a home telephone exchange system, FIG.
The external line L, which is a public telephone line,₁Connected to
Telephone exchange A and the telephone exchange A
Extension L ₂And a control line L as a signal transmission line₃Connect with each
Multiple telephone outlets B and the telephone
And a commercially available telephone C that is detachably connected to
And the outside line L at the telephone exchange A₁And extension L₂Or within
Line L₂Switch the communication paths between the two parties, and use telephone C to connect to the outside line.
Some have made it possible to talk and make extension calls. Also,
This home telephone exchange system calls telephone exchange A
Line L_FourDoor phone D can be connected via
Call line L_FourAnd extension L₂A call path is formed between
It is also possible to make intercom calls with machine C.

A modular jack M is provided in each telephone outlet B, and a general commercially available telephone C can be detachably connected by this modular jack M. Also,
The telephone outlet B is a speaker SP for reproducing the broadcast signal, such as the extension ring tone or intercom call sound transmitted through the control line L _3, the voltage signal transmitted through the control line L ₃ The light-emitting display unit L that discriminates the display signal that is displayed to indicate whether an internal call or an external call is being made.
a and Lb are provided, and the speaker SP and the light emitting displays La and Lb perform notification and display operations. The volume of the ringing tone can be adjusted using the volume adjustment switch VS.

Further, in the case of this home telephone exchange system, the telephone exchange A has a functional portion as a telephone C and a functional portion as a telephone outlet B which are internally connected to the extension L ₂ and the control line L _3. The telephone exchange A has a function as one telephone set C that is originally connected to the telephone exchange A, and the telephone exchange A itself has an outside line call.
It is possible to make extension calls and intercom calls.
Here, as shown in FIG. 8, the functional unit as the telephone C includes a handset 30 for communication and an operation unit 31 including a numeric keypad button and other function buttons, and the functional unit as the telephone outlet B emits light. The display unit 32 corresponds to the display elements La and Lb, and the notification unit 33 corresponds to the speaker SP.

[0005]

By the way, since the telephone outlet B of the home telephone exchange system is constructed by being embedded in a wall or the like, there is a problem that the construction site is limited to the wall and the like. If you put furniture etc. in front of this telephone outlet B, the display will disappear,
There was a problem that the ringing tone became difficult to hear. Further, when there is a distance between the telephone and the telephone outlet, it is difficult to confirm the display, and it is difficult to hear the ringing tone.

The present invention has been made in view of the above points, and an object of the present invention is to provide a home telephone exchange system in which a telephone outlet can be installed at an arbitrary location near a telephone. ..

[0007]

In order to achieve the above object, the present invention provides a telephone exchange to which an external line which is a public telephone line is connected, and an extension as a communication line and a signal transmission line to the telephone exchange. A plurality of telephone outlets connected via a control line and a commercially available telephone that is detachably connected to the telephone outlets are provided, and the telephone exchange is used to switch between the external line and the internal line or between the internal lines. The above telephones can be used for outside calls and extension calls, send call signals and display signals to the telephone outlet through the control line, perform various calls and call displays at the telephone outlet, and connect to the extension and control lines inside the telephone exchange, respectively. The function part as a telephone and the function part as a telephone outlet are integrated, and the above telephone outlet is an exposed type that can be installed at any place. .

In the case of using a cordless telephone, a signal generation circuit for generating a pseudo incoming signal which is the same as or similar to an external incoming signal and an internal ringing or A setting switch for setting whether or not to send the pseudo incoming signal to the extension at the time of calling the intercom may be provided.

Further, when the telephone exchange can be installed in any place, the above-mentioned telephone exchange may be an exposed type which can be installed in any place. Further, in order to improve the functionality of the home telephone exchange system, a security device is connected to the telephone exchange, and when an abnormality is detected in the security device, an alarm sound is output from the telephone exchange and the telephone outlet. May be.

[0010]

According to the present invention, the telephone outlet is exposed as described above, so that it is possible to install the telephone outlet near the telephone without restriction of the installation location.

[0011]

(Embodiment 1) FIGS. 1 and 2 show an embodiment of the present invention. The home telephone exchange system of this embodiment is basically the same as that described in the section of the prior art described above,
The feature of the present invention resides in that the telephone outlet B is a so-called exposed type that can be installed at any place.

FIG. 1 is a diagram showing the system configuration of this embodiment. Instead of the conventional telephone outlet B, a modular jack M is installed on a wall or the like. A telephone outlet B'corresponding to the conventional telephone outlet B has a structure that can be installed at any place such as a desk. In other words, the housing of the telephone outlet B'has a shape that does not make it look bad even on a desk or the like. In addition, regarding the configuration of the internal circuit and the like, in order to improve the appearance of the connection portion of the telephone C and the point of providing the connection portion of the cable for connecting with the modular jack M,
It is completely the same as the conventional one except that the modular jack M is provided on the side surface. Like this, telephone outlet B '
When it is exposed, compared to the case where it is buried in the wall surface, the place of installation is not restricted, and if it is installed near the telephone C, the display and ringing tone can be easily understood. Depending on the case, as shown in FIG. 1B, only one commercially available telephone C may be connected.

Operation of the home telephone exchange system of this embodiment
Will be described according to the configuration and operation of the telephone exchange A. Real
In the telephone exchange A of the embodiment, as shown in FIG.
Extension L to which St B is connected₂Relay contact r for each₁~ R
₃This relay contact r ₁~ R₃Extension L₂And outside line
L₁Disconnect the connection with the extension L₂Is the outside line L₁Cut off
For extension calls or intercom calls that are separated from each other
Call current supply circuit 4₁~ 4₃Supplied from
It The relay contact r₁~ R₃Is usually extension L₂To
Outside line L₁It has been switched to the side to disconnect from
Outside line L ₁Switched to the side.

Now, assuming that an incoming call to the outside line is detected by the incoming call detection circuit 5, the control circuit 11 composed of the CPU performs control for switching the relay contacts r _{1 to} r ₃ to the outside line L ₁ side,
The incoming call signal from the outside line L _{1 is} sent to the telephone C.
To call the outside line by ringing a bell or the like built in the telephone C. When the handset of the telephone C is picked up in response to this call, an outside line call becomes possible. By the way, on the telephone outlet B side of the relay contacts r _{1 to} r ₃ ,
The provided DP detection circuit 2 ₁ to 2 ₃ to detect the hook state of the dial signal and phone C by a dial pulse (DP) signal inputted from the telephone C, if the phone C is off-hook when the outside line call as described above In response to the output of the hook / DP detection circuit 2 corresponding to the telephone C, it is determined that the control circuit 11 is in an external line call. At this time, the display control circuit 18 sends each telephone outlet through the control line L _3. A display signal is sent to B, and the light emitting display unit La of each telephone outlet B is turned on to display an outside line call.
An amplifier AMP is inserted in the transmission path of the display signal and a notification sound signal described later to amplify the signal.

When making an outside line from the telephone C, the receiver is lifted and dialed. In the following description, a case where the telephone line contract is a dial pulse line will be described. The off-hook state of the telephone C is detected by the hook / DP detection circuit 2, and at this time, the control circuit 11 drives the signal sound generation circuit 20 to make a pseudo transmission similar to the dial tone (two tone) sent from the telephone station. Send sound to telephone C through extension L ₂ . The sending of the pseudo dial tone is stopped when the hook / DP detection circuit 2 detects the first dial signal. By the way, in this type of home telephone exchange system, telephone call processing such as extension calling is performed by inputting a specific dial signal from the telephone C. Therefore, even if the telephone C is dialed, it is considered to be an outside line call. Not limited to
There are cases where call processing such as extension calling is performed. Therefore, the control circuit 11 receiving the dial signal starts the outside line transmission operation only when the number of digits of the dial signal exceeds the number of digits of the dial signal allocated for call processing. This outside line transmission is performed by driving the DP sending circuit 6 and sending a DP signal to the outside line L ₁ via the diode bridge DB. When the other party responds to the call from the outside line, the polarity of the outside line L ₁ is inverted. Therefore, this polarity inversion is detected by the polarity inversion detection circuit 16, and then the outside line L ₁ and the telephone C that has made the outside line connection are connected. Then, the relay contact r is switched so as to connect to the extension L ₂ to enable an outside call. Also at this time, the display control circuit 18 causes the telephone outlet B to display the outside line communication. After the polarity reversal detection circuit 16 detects the polarity reversal, the external line L ₁
Both ends of the diode inserted in the terminal are short-circuited by the relay contact r ₀ to eliminate an increase in the direct current resistance as a telephone connected to the outside line L ₁ . Further, a dial tone transmitted through the outside line L ₁ , for example, a busy tone or the like is detected by the outside line dial tone detection circuit 8, and at that time, the signal line generation circuit 20 makes an extension line L to the telephone C which has made an outside line. Send busy tone through ₂ .

When making an extension call, the telephone C inputs a dial signal in the same manner as in the case of making an outside call. It is to be noted that the control circuit 11 determines from the number of digits of the dial signal that this extension call is made, and at this time, the notification sound generating circuit 17 is driven to make a call through the control line L ₃ corresponding to the telephone C on the called side. A notification sound signal is sent to the outlet B, and an extension ringing sound is emitted from the speaker SP of the telephone outlet B. Then, the hook / DP detection circuit 2 detects that the called telephone C responds and is off-hook,
The control circuit 11 controls the crosspoint switch 10 to connect the extension L ₂ corresponding to the telephone C on the calling side and the extension L ₂ corresponding to the telephone C on the called side to enable extension telephone communication. To do. At this time, the display control circuit 18 causes the telephone outlet B to display the extension call state.

By the way, although the above-mentioned extension call is made to a specific telephone C, if the telephone C to be called is not specified, a general call can be made. In this case, the dial signal corresponding to the general call is sent to the telephone C.
Input from the telephone outlets B all simultaneously ring the extension ringing tone, and when one of the telephones C is off-hook in response to the call, the detection output of the hook / DP detection circuit 2 corresponding to the telephone C is output. In response, the control circuit 11
Is the extension L ₂ corresponding to the telephone C and the calling telephone C
The extension L ₂ corresponding to is connected to enable extension communication.

Further, this home telephone exchange system is provided with a holding sound sending circuit 9 for carrying out a holding operation and sending a holding melody sound. In addition, the above-mentioned outside call can be transferred by this holding operation. When the telephone line contract is the push button line, the PB receiver 1 receives the dial signal from the push button type telephone set PB signal.
It operates in the same manner as the dial pulse line except that the PB dialer 7 sends a dial signal to the outside line L ₁ in the state in which the line is closed by the DC closing circuit 3 after being detected by 2 and 13. .. Furthermore, a power supply voltage detection circuit 19 for detecting a decrease in the power supply voltage is provided so as to deal with the case where the contents stored in the buffer inside the control circuit 11 are destroyed by the decrease in the power supply voltage.

Next, the case where the intercom is called will be described. In the case of the present embodiment, two intercoms D can be connected. The intercom calling detection circuit 14 detects that the push button of the intercom D has been pressed, and the control circuit 11 receives this detection output. Causes the alarm sound generation circuit 17 to send an alarm sound signal corresponding to a call to the intercom to each telephone outlet B, and the telephone outlet B causes the intercom ring tone to ring. When the handset of one of the telephones C is picked up in response to the calling of the intercom, the control circuit 11 switches the call line L ₄ of the calling intercom D and the extension L _{2 of the} telephone C that responds to the switch S ₁ , S. Turn on one of the _two ,
And by connecting the cross point switch 10,
Enables intercom calling. Here, the intercom communication is performed via the intercom communication circuit 15.

Although not described in detail, the telephone C also has a function of changing a place to call the telephone C after holding the telephone or transferring an outside line call by a dial operation or a hook operation of the telephone C and a combination thereof. In addition, various services of NTT (call waiting service, triophone service, etc.) can be received in the same manner as a normal telephone. Further, it goes without saying that one line of the corresponding extension L ₂ and control line L ₃ is connected to the telephone function section and the telephone outlet function section of the telephone exchange A.

(Embodiment 2) FIGS. 3 to 5 show another embodiment of the present invention. This embodiment corresponds to the case where a cordless telephone is connected as the telephone C. That is, in the case of a cordless telephone, even if the telephone outlet B'is exposed as described above, the cordless telephone itself is carried, so that the cordless telephone C'is not always used near the telephone outlet B '. For this reason, extension calls and intercom calls may not be heard. Therefore, in the present embodiment, in order to improve this point, an extension call, an intercom call, etc. are made by the cordless telephone.

The configuration of this embodiment will be described below with reference to FIG. It should be noted that this FIG. 3 shows the configuration of the telephone exchange A in a further simplified form.
F) units 20 ₁ and 20 ₂ are hook / DP detection circuits 2 ₁ ,
The PB receivers 12 and 13 and the intercom communication circuit 15 are provided, and the external line interface (IF) unit 21
Is composed of the DC closing circuit 3, the incoming call detection circuit 5, the DP transmission circuit 6, the PB dialer 7, the outside line transmission tone detection circuit 8, the holding tone transmission circuit 9 and the polarity reversal detection circuit 16, and the switching circuit 22 is a cross point. The switch 10 and the telephone function unit 23 have functions including a function unit as the telephone outlet B in addition to the function unit as the above-mentioned telephone C.

In the case of this embodiment, in addition to the above configuration,
A pseudo incoming signal generating circuit 24 for generating a pseudo incoming signal which is the same as or similar to the external incoming signal shown in FIG. 4 (a), and whether or not the output of this pseudo incoming signal generating circuit 24 is output to the extension L ₂ is selected. It is characterized in that it is provided with a setting switch SW ₁ . Here, the signal generated by the pseudo incoming signal generation circuit 24 is, for example, 2 seconds within 1 second when a 16 Hz signal exists in the external incoming signal from the telephone station shown in FIG. 4 (a).
16Hz signal is output intermittently, or 16
It is preferable that the stop signal (2 seconds) of the Hz signal is changed to 1 second so that it can be distinguished from the external incoming signal.

When the cordless telephone is connected to the extension L ₂ , the setting switch SW ₁ is turned on so that the pseudo incoming signal can be transmitted to the extension L ₂ when calling the extension or calling the intercom. Set to. When the control circuit 11 detects that an extension call has been made, a pseudo incoming signal is sent from the pseudo incoming signal generating circuit 23 through the extension interface unit 20 at this time to the extension L.
Output to ₂ . At this time, the control circuit 11 controls the pseudo incoming signal generation circuit 23 to generate the pseudo incoming signal. As a result, a built-in bell or the like provided in the cordless telephone rings to make an extension call or a doorphone call. At this time, if the cordless telephone is set to the call-enabled state, it is possible to make an extension call or a doorphone call as in the case of the ordinary telephone C.

By the way, although the above description has been made on the case of a cordless telephone, the extension C can be called by the telephone C even in the case of the ordinary telephone C. In this case, since the function of the telephone outlet B ′ does not exert its function so much, the telephone C may be directly connected to the modular jack M as shown in FIG.

(Embodiment 3) FIG. 6 shows another embodiment of the present invention. In this embodiment, the telephone exchange A is also an exposed type. That is, if the telephone exchange A is to be embedded in the wall and attached, as in the case of the telephone outlet B,
There is a problem that the construction site is restricted. Therefore, in the present embodiment, the telephone exchange A is also of the exposed type, and the number of construction sites is limited.

Further, in the case of the present embodiment, various sensors such as fire, gas leakage, crime prevention, etc., or a security device S such as a push button for emergency contact can be connected to the telephone exchange A. In this case, a receiving circuit for receiving outputs of various sensors is provided inside the telephone exchange A, and the output of the receiving circuit is input to the control circuit 11 so that the control circuit 11 can recognize the occurrence of an abnormality. Then, when the control circuit 11 detects the occurrence of an abnormality, at that time, the alarm unit 33 and the respective telephone outlets B (or the intercoms may be included) emit an alarm sound or the like. In this way, the function of the home telephone exchange system can be enhanced. In addition, it is preferable to emit an alarm sound that is easy to identify in accordance with each abnormality.

[0028]

As described above, according to the present invention, since the telephone outlet is an exposed type which can be installed at any place, the place of installation is not restricted and the telephone can be installed near the telephone. Further, if a signal generating circuit for generating a pseudo incoming signal which is the same as or similar to the external incoming signal and a setting switch for setting whether or not the pseudo incoming signal is sent to the extension line at the time of calling the extension or doorphone are provided, for example, When a cordless telephone is used, an extension call or the like can be made from the telephone, and the problem that the extension call cannot be heard when the cordless telephone is located far from the telephone outlet can be solved.

Furthermore, if the telephone exchange is an exposed type that can be installed at any location, the telephone exchange can also be installed at any location. Furthermore, if a security device is connected to the telephone exchange and an alarm sound is output from the telephone exchange and the telephone outlet when an abnormality is detected in the security exchange, the home telephone exchange system will have the security system function. As a result, high functionality can be achieved.

[Brief description of drawings]

1A and 1B are schematic system configuration diagrams in which the number of extensions is different according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit configuration of the same telephone exchange.

FIG. 3 is a block diagram showing a schematic circuit configuration of a telephone exchange according to another embodiment.

4 (a) to (c) are signal waveform diagrams of a pseudo external line incoming signal, respectively.

FIG. 5 is a schematic system configuration diagram when a telephone outlet is not used in the above.

FIG. 6 is a schematic system configuration diagram of another embodiment.

FIG. 7 is a system configuration diagram of a conventional home telephone exchange system.

FIG. 8 is a perspective view of the same telephone exchange.

[Explanation of symbols]

A telephone exchange B'telephone outlet C telephone S security device L ₁ external line L ₂ internal line L ₃ control line SW ₁ setting switch 24 pseudo incoming signal generation circuit

Claims (4)

[Claims] 1. A telephone exchange to which an external line which is a public telephone line is connected, and a plurality of telephone outlets connected to the telephone exchange through extension lines as call lines and control lines as signal transmission lines, Equipped with a commercially available telephone that is detachably connected to a telephone outlet, the telephone exchange can be used to switch between the external line and the internal line or between the internal lines to make an external call and an internal line call, and call through the control line. Signals and display signals are sent to a telephone outlet, various calls and call displays are made at the telephone outlet, and the function part as a telephone and the function part as a telephone outlet are respectively connected to the extension and the control line in the telephone exchange. A home telephone exchange system, characterized by being integrally incorporated and being an exposed type capable of installing the telephone outlet at an arbitrary location. 2. A signal generating circuit for generating a pseudo incoming signal which is the same as or similar to an external incoming signal, and a setting switch for setting whether or not the pseudo incoming signal is sent to an extension when an extension call or a doorphone call is made. The home telephone exchange system according to claim 1, wherein: 3. The home telephone exchange system according to claim 1, wherein the telephone exchange is an exposed type which can be installed at any location. 4. The household device according to claim 1, wherein a security device is connected to the telephone exchange, and when an abnormality is detected by the security device, an alarm sound is output from the telephone exchange and the telephone outlet. Telephone exchange system.