JPH03140086A - Telephone system - Google Patents

Abstract

PURPOSE:To eliminate the need for the operation for doorphone talking with a telephone set by allowing an exchange to detect any telephone set hooked off in response to a doorphone call and forming a channel for doorphone speech between an extension connecting to the telephone set and the doorphone speech line. CONSTITUTION:A hook detection circuit 12 detects hook-on of any telephone set C in an exchange A by the doorphone call and a detection output is outputted to the control circuit 20. In this case, the control circuit 20 throws the contact r1 of a relay Ry1 to the position of doorphone channel to form a channel for doorphone speech between an extension l2 connecting to the telephone set C and a speech line of a doorphone D. Thus, the doorphone talking is implemented without any operation in the telephone system using a general telephone set on market.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J] The present invention relates to a telephone system that allows outside calls and intercom calls using commercially available telephones.

"Prior art 1" Conventionally, this type of telephone system was
This has been proposed in Publication No. 95, etc. In this telephone system, the main device is connected to the telephone office via an outside line, and the control 1#! which transmits internal call control data consisting of a pair of signal lines to the exchange, respectively. It consists of a plurality of telephones connected in parallel to the above-mentioned exchange, and a door intercom connected to the above-mentioned exchange by a telephone line. You can use it to make outside calls and doorbell calls.

[Problem to be Solved by the Invention 1] By the way, in the above-mentioned telephone system, when the telephone is taken off-hook in response to a doorbell call, the telephone can be used to conduct a doorbell call in the dark.

However, the telephone of this telephone system is a so-called terminal-like device exclusive to the telephone system, and is not a general commercially available telephone.

Therefore, there has been provided a device that allows outside line calls and intercom calls to be made using a general commercially available telephone, similar to the above-mentioned telephone system. However, in a conventional telephone system using a commercially available telephone, when making a doorphone call in response to a doorphone call, there is a problem in that some operations are required to enable the doorphone call to be made using the telephone.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a telephone system that allows door intercom calls to be made without any hassle in a telephone system using general commercially available telephones. It is about providing.

Means for Solving the Problem] In order to achieve the above object, the present invention provides an exchange connected to a telephone office via an outside line, and a parallel connection to this exchange with an extension line and a control line each consisting of a pair of signal lines. It consists of multiple telephone outlets connected to a commercially available telephone, respectively, and a doorbell connected by a telephone line to an exchange.The exchange forms a communication path between the internal line and the external line when an external call is received or an external line is made. At the same time, the exchange detects which telephone has been taken off-hook in response to the doorphone call, and forms a communication path for the doorphone call between the extension to which this telephone is connected and the doorphone call line. be.

In order to make this telephone system multi-functional, various abnormality detection devices may be connected to the exchange, and when an abnormality is detected by the abnormality detection vcllt, an abnormality may be notified from the telephone outlet. In this case, if a canceling means for canceling the abnormality notification operation is provided,
The abnormality notification operation can be canceled independently using only the telephone system.

Further, in the telephone system having the above-mentioned abnormality notification function, if the above-mentioned abnormality notification is sounded from the doorbell, abnormality notification can also be performed outdoors.

In addition, in order to be able to know if there is an incoming outside call while talking on the doorbell, you can use the outside number button while talking on the doorbell. When there is an incoming call, it is convenient to make an external #iN call sound from the telephone outlet.

1 Effect 1 As described above, the present invention detects any telephone that is off-hook in response to a doorbell call, and establishes a call for the doorphone call between the extension to which this telephone is connected and the call line of the doorphone. By forming a channel, there is no need for any kind of interference with the telephone for door intercom calls, and even in a telephone system using a general commercially available telephone, when the telephone is off-hook in response to a door intercom call, It allows you to make doorbell calls.

“Example 11 An example of this embodiment is shown in FIGS. 1 to 4 on page 1.

As shown in FIG. 1, the exchange WIA of the telephone system of this embodiment is a public telephone line from a central telephone office.
A plurality of telephone outlets 1B+ or notification 22)B2 are connected in parallel with the extension line 12 and the control @e z each consisting of a pair of signal lines, and the call #! I connected the door phone D with l. Each telephone outlet B+ is integrally equipped with a monocular jack M connected to the inner Ate 2, and a telephone C can be connected to the telephone C detachably through this monocular jack M. B, modular jack M is separated from B and connected separately.
The telephone C can be detachably connected using the .

In addition, in this telephone system, in order to correspond to the case where telephone C is added, an extension 22) E is provided.
This expansion unit (E) makes it possible to add a new telephone outlet (B1) or notification unit (B2) to which the telephone C is connected.

By the way, the telephone outlet B1 is the control line l.

The system is equipped with a notification section 30 consisting of a speaker and a display device connected to the doorphone, and when the doorphone is called, a ring tone is emitted from the speaker, and the display indicates that the doorphone is ringing. Note that the notification unit B is equipped with only the notification fi 30 of the telephone outlet Bl.

FIG. 2 shows the circuit configuration for the exchange of this embodiment.

This replacement fiA is outside NI, to the diode Pritsuno DB
An incoming call detection circuit 1 connects via
1, a hook detection circuit 12 that detects the on state of telephone C connected to #i e 2, and a door intercom call circuit 1 that controls bidirectional communication between door intercom D and telephone C.
3, a doorbell call detection circuit 14 that detects a call from the doorphone D, and a display signal that is a voltage signal sent to the telephone outlet BI etc. via the control line 13 to the telephone outlet B,
The display control circuit 15 that controls the display of the display, the sound generation circuit 16 that generates an audio signal such as a doorbell ringing tone, the amplifier circuit that amplifies the ringing signal, and the telephone outlet BI etc. are replaced separately. A speaker SP is provided to generate a ring tone on the In and A side, and a relay Ry that switches and connects the inner #i12 to the outer Is e + or the call me by switching the contact r1, and this relay Ry1. Inner M
12 is call #! e, if connected to the side, phone 81C
a power supply circuit 19 that supplies communication current to the power source; a control circuit 20 that includes a CPU that controls the operation of each of the circuits described above and performs signal processing based on the detection output;
It is equipped with analog switches 81 to 81 to 81S that are turned off to switch and form signal transmission paths, and a power supply circuit 21 that generates power for each of the above components from a commercial power supply AC. Note that the specific circuit shown in FIG. @2 is shown in FIG. 3, the same circuits are given the same numbers, and the explanation thereof will be omitted.

The operation of this embodiment will be explained below. First, the case of making an outside line call will be explained. Now, when the telephone C connected to a certain telephone outlet B1 goes off-hook, the hook detection circuit 12 detects this off-hook and outputs an off-hook detection signal to the control circuit 20. At this time, the control circuit 20 operates the sound generation circuit 16 to generate a pseudo oscillation tone of 400 Hz. At this time, the relay RF+ is switched to the side that disconnects the contact "," from the outside #i1!l, and the analog switch S is turned on, so that
A pseudo dial tone is sent to the inner #i e i through the amplifier circuit 18 . At this time, the control circuit 20 simultaneously controls the display control circuit 1.
5 to cause each telephone outlet B3 etc. to display that an outside call is in progress.

The user dials telephone C after confirming this pseudo dial tone. Note that the dial signal input from telephone C is detected by the 7-trick detection circuit 12, and when the 18th dial signal is detected by the 77-trick detection circuit 12, the control circuit 20
stops the output of the pseudo call signal by turning off the analog switch S, and after temporarily storing the dial signal in the built-in buffer memory, connects the relay RY+ to the external line 1 of contact ``1''.
By disconnecting the connection to 1, the external $1. Sends a dial signal to. Thereafter, the contact r of the relay RF+ is kept connected to the outside M e I side to enable an outside line call.

The above-mentioned outside line call can be terminated by turning on the telephone C (77), and returning the telephone aC to the standby state by going off-hook.

At this time, the control circuit 20 stops the operation of the display control circuit 15 and connects the telephone outlet B.

Stop displaying outside line calls on the display.

Next, the outside line incoming operation will be explained. Now, ↑) When an incoming signal is sent through the external #a e+ during the aircraft,
The internal bell of each telephone C rings through the internal #i l 2 to notify the incoming external #I call. At this time, an incoming call signal is simultaneously detected by the incoming call detection circuit 11, and the incoming call detection signal is output to the control circuit 20. When the control circuit 20 receives this incoming call detection signal, the control circuit 20 operates the display control circuit 15 to cause the display of the telephone outlet B to display that an outside line call is in progress. When any telephone tic is off-hook in response to the ring tone emitted from the telephone C, an outside call becomes possible. Then, when telephone C is turned on-hook at the end of the call, it returns to the standby state, and at this time telephone outlet B
Outside l #i The call display disappears.

The operation when there is a call from door phone D will be described below. When a calling operation is performed using this door phone D, the door phone call detection circuit 14 detects a calling signal output from the door phone D at this time, and outputs the detection signal to the control circuit 20. The control circuit 20 operates the sound generating circuit 16 to generate a doorbell ringing sound, and turns on the doorphone ringing sound by turning on the amplifying circuit 18.
It is sent to the amplifier circuit 17 through . Here, the amplifier circuit 17
The output causes the speaker SP installed in the exchange fiA to ring, thereby notifying the doorbell call. The amplifier circuit 17 then sends the doorbell ringing tone to the telephone outlet B1 via the control line, and causes the speaker of the telephone outlet B1 to announce the doorphone ringing. The control circuit 20 also controls the sound generation circuit 1 by turning on the analog switch S2.
The door phone ringing tone outputted by No. 6 is sent to the door phone D side as a back tone. At the same time, the control circuit 20 operates the display control circuit 15 to cause the display of the telephone outlet B1 to display that the door intercom call is in progress.

When any of the telephones C is turned on-hook due to the above-described intercom call, the hook detection circuit 12 detects this on-hook and outputs a detection output to the control circuit 20. At this time, the control circuit 20 enables the doorphone call by switching the relay Ryl to the doorphone call path side. For this doorbell call, do the same thing as for an outside line call, and do 1! You can make calls using voice command C. Furthermore, this l'
In the case of a 7-phone call, the call can be made for 30 seconds, for example, and this call control is controlled by the control circuit 20 when the 7-phone call is made.
Turn on and off the doorphone call circuit 13 by turning on and off the switching switch S.
The fact that a call is possible is indicated by displaying that the doorphone call is in progress on the display of the telephone outlet Bl only for the period during which the doorphone call is possible. This doorphone call ends when the telephone C goes off-hook or becomes available for talking.6 By the way, when an outside call is received during the above-mentioned doorphone call, the telephone system of this embodiment operates as follows. When an incoming outside line call is detected by the incoming call detection circuit 11 during a doorphone call, the control circuit 20 causes the sound generation circuit 16 to generate an outside line ringtone, and transmits this outside line ringtone to the speaker SP and the telephone in the same manner as the doorphone ringing tone. A sound is emitted from the speaker of outlet B to notify the user that there is an incoming call from outside #1. When the user hears this outside M ringtone, he once puts telephone C on-hook to end the doorbell call, and then goes off-hook telephone C again. Contact ``1'' of relay RV+ switches to outside #, and the user makes an outside call. becomes possible.

In this way, in this embodiment, a general commercially available telephone lf! A doorphone call can be made using C, and if the telephone C is off-hook when the doorphone is called, an open communication path is formed between the doorphone D and the telephone WiC, and the doorphone call can be made.

Fig. 4 is a diagram showing the external appearance of the replacement fiA, and the shape of the casing 40 of this exchanger A is the size of three standardized A-manufactured wiring devices (one monoyl wiring device, three vertically). It is formed in the size of 13 rows of W) and has 3 rows of #
It is designed so that it can be attached to an embedded box embedded in a wall surface using a mounting frame 41 that is shared by the i-devices. Here, the front side of the replacement fiA is provided with an indicator 42 that shows the energization state of the commercial power source AC, and the back side is equipped with a power terminal section 43 to which the power line is connected in a connected manner, an external line 11, an internal line 12, and a control #. 13, connection terminal portions 44 having a screw-fastening structure are provided to connect the communication lines and the like. Further, the casing 40 of the replacement fiA is formed with an engaging piece for fitting and engaging with the mounting frame 41, similarly to the wiring device. Further, the mounting frame 41 attached to the exchanger A is fixed to the embedded box by screwing fixing screws into the embedded box through the mounting holes 45, and a decorative plate frame is provided on the front side of the mounting frame 41 to attach the plate screws to the embedded box. It is attached by screwing into the screw hole 46.

[Example 2] Other embodiments of the present invention are shown in FIGS. 5 to 7.

In this embodiment, the output of the abnormality detection device can be connected to exchange A, thereby making the telephone system multi-functional.In the case of this embodiment, the fire! It is possible to input the audio output of an alarm unit (H) that notifies the output of miscellaneous equipment G or the detection of a gas leak, etc. using an audio signal.

Here, when an alarm output is generated from the fire alarm G, for example, the detection circuit 26 detects the WN output, the detection output is input to the control circuit 20, and the control circuit 20 receives the alarm from the sound generation circuit 16. A sound is generated, and by turning on the analog switch S, this alarm sound is sent through the same route as in the case of the doorbell call explained in the above embodiment, and is sent from the speaker SP of the exchange A, the speaker of the telephone outlet (B+), etc. It was designed to emit. Note that in consideration of the case of m[*, a release button SW is provided in this embodiment, and the input circuit 22 detects the operation state, and this detection output is input to the control@(j3J path 20). , the alarm sound is stopped by III II of the control circuit 20.

Further, when an audio signal is output from the alarm unit (unif), the alarm detection circuit 23 detects this audio signal and outputs this detection output to the control circuit 20. Upon receiving this detection output, the control circuit 20 turns on the analog switch S4 so that the audio signal from the 7 ram unit 2) H input to the amplifier circuit 18 is transmitted through the speaker SP and the speaker of the telephone 2) B+. Here, this audio signal is also stopped by pressing the release button SWl. In other words,
The alarm detection circuit 23 is configured so that when the release button SW is turned on, the audio signal is not output.

[Embodiment 31 Still another embodiment of the present invention is shown in FIGS. 8 to 10. In this embodiment, the idea of the second embodiment described above is further advanced, and an alarm sound can also be emitted from the door phone D.

For this purpose, as shown in FIG. 9, the replacement RA is provided with an m number increase #s24 for amplifying the alarm sound and a drive circuit 25 for controlling the display of the door phone D. When the emergency InT is pressed, the alarm sound output from the sound generation circuit 16 is also emitted from the speaker of the door phone D through the amplifier circuit 24, and the display of the door phone D is driven by the drive circuit 25 to operate the alarm display. It's Nishide.

[Effect of the Invention 1] As described above, the present invention detects any telephone that is off-hook in response to a doorbell call, and connects the extension to which this telephone is connected and the doorphone call line. This creates a communication path for doorbell calls, so there is no need to perform any operations on the telephone for doorbell calls.For this reason, even if the telephone system uses a general commercially available telephone, when the telephone is off-hook in response to a doorbell call, You can make doorbell calls.

In addition, by making it possible to connect each p1 abnormality detection device to the above-mentioned exchange and making it possible to notify the abnormality from the telephone outlet when an abnormality is detected by this abnormality detection device, it is possible to add an abnormality notification function to this telephone system, and the system can be made multi-functional. In this case, if a canceling means for canceling the abnormality notification operation is provided, the abnormality notification operation can be canceled solely by the telephone system.

Furthermore, in the telephone system having the J4 constant notification function described above, if the above-mentioned abnormality notification is sounded from the doorbell, abnormality notification can also be performed outdoors.

Furthermore, when an outside line call arrives during a doorphone call, it is convenient to emit the outside #iI ringtone from the telephone outlet, which allows the user to know that an outside line call has arrived even during the doorphone call.

[Brief explanation of the drawing]

Figure 1 is a system configuration diagram of an embodiment of the present invention, Figure 2 is a circuit diagram of the same exchange, Figure 3 is a specific circuit diagram of the same, and Figures 4 b) to (e) are front views of the exchange. , a sectional view as seen from the left, a side view as seen from the right, a sectional view as seen from the bottom, and a rear view; FIG.
The figure is a circuit diagram of the above exchange, Figure 7 is a specific circuit diagram of the same, Figure 8 is a system configuration diagram of another embodiment, Figure 9 is a circuit diagram of the same exchange, and Figure 10 is the same as the above. It is a specific circuit diagram. AI! Switchboard, B is telephone outlet, C is telephone, D
is the doorbell, G is the fire alarm, H is the alarm unit,
■ is an emergency button, I is an outside line, 12 is an extension line, and l is a control line. 415th! i! (C) (d) 411th! ll (e)

Claims (4)

[Claims] (1) A switchboard connected to a telephone office via an outside line, and a plurality of telephone outlets connected in parallel to the switchboard by extension lines and control lines, each consisting of a pair of signal lines, to which commercially available telephones are connected, respectively; It consists of a doorphone connected to an exchange through a telephone line, and when an outside call is received or an outside call is made, the exchange forms a communication path between the extension line and the outside line to enable an outside call, and also goes off-hook in response to the doorphone call. In this telephone system, an exchange detects any of the telephones connected to the telephone, and forms a communication path for the doorphone call between the extension line connected to this telephone and the telephone line of the doorphone, thereby making it possible to make the doorphone call. (2) It is possible to connect various abnormality detection devices to the above exchange,
2. The telephone system according to claim 1, further comprising canceling means for notifying the abnormality from the telephone outlet when the abnormality detection device detects the abnormality and canceling the abnormality notification operation. (3) The telephone system according to claim 2, wherein the abnormality alarm is emitted from a doorbell. (4) The telephone system according to claim 1, wherein when an outside line call is received during a doorphone call, an outside line ringing tone is emitted from the telephone outlet.