JPH02223293A - Telephone exchange system - Google Patents

Abstract

PURPOSE:To generate an optimum call tone even at night by discriminating daytime or night depending on the time of a clock means and switching the tone volume of a call tone from a speaker of a telephone receptacle in the decreasing direction at night. CONSTITUTION:A telephone exchange is provided with a clock means 19 counting a time and a discrimination changeover control means 11 discriminating daytime or night depending on the time of the clock means 19 and switching the sound volume of the call tone from a speaker of a telephone receptacle B in the decreasing direction at night. Then daytime or night is discriminated depending on the time of the clock means 19 and the tone volume of the call tone is switched automatically from the speaker of the telephone receptacle B to decrease the tone volume at night. Thus, the call is applied in an optimum tone volume even at night or daytime.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a telephone switching system that allows external and internal calls to be made using commercially available telephones by switching and forming communication paths between external lines and internal lines or between internal lines. .

[Prior Art] In this type of telephone exchange system, as shown in FIG.
Connect telephone exchange A, which is installed in the house, to telephone exchange A via an outside line and a safety switch, and connect multiple telephone outlets B to telephone exchange A using extension r2 and control II 13. Furthermore, a door phone D installed outside the house is connected to the telephone exchange A via a telephone line 14.

Each telephone outlet B is provided with a modular jack M, through which a commercially available telephone C of -m can be detachably connected. Also, this telephone outlet B has control 8! A speaker SP is provided for reproducing notification signals such as an extension or doorphone ringing tone sent through the 11s. Further, the telephone outlet B is provided with a light-emitting display section (5a, Lb) for discriminating a display signal, which is a voltage signal, sent through the control line (1) and displaying an internal or external call.

In this telephone exchange system, telephone exchange I! At A, external line 11 and extension 12, extensions 12 to 12, or extension 12 and call line 1
4 to enable outside line calls, internal calls, and doorphone calls, and control lines from telephone exchange A! A notification signal and a display signal are sent to the telephone outlet B through the telephone outlet B, and the speaker SP and the light emitting indicators La and Lb of the telephone outlet B perform a notification and display operation.

[Problem to be Solved by the Invention] In the above-mentioned telephone exchange system, conventionally, the ringing tone from the speaker SP of telephone outlet B is constant, so if the ringing volume is set so that it can be heard sufficiently during the noisy daytime, There was a problem with the noise being too loud during quiet nights.

The present invention has been provided in view of the above-mentioned points, and provides a telephone exchange system whose purpose is to lower the volume of ringtones, etc. at night, and generate optimal ringtones. .

[Means for Solving the Problems] The present invention includes a clock means for counting the time, and a method that determines whether it is daytime or nighttime based on the time of the clock means, and lowers the volume of the ringing tone from the speaker of the telephone outlet at night. The above-mentioned telephone exchange is equipped with a judgment switching control means for switching to the above-mentioned telephone exchange.

[Function] With the above configuration, it is determined whether it is daytime or nighttime based on the time of the clock means, and the f of the ring tone from the speaker of the telephone outlet is determined.
I switch the f-level and lower the volume at night.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. The telephone exchange A of this telephone exchange system will be explained. As shown in FIG. 1, telephone exchange A includes relay contacts r1 to r1, a hook/DP (dial pulse) detection circuit 2. ~2. and call current supply diagram &! 84I~4. In addition to being equipped with an outside line!
, an incoming call detection circuit 5 for detecting an incoming call from , a DP generating circuit 6 for generating a DP- for making an outside call, a PB dialer 7 for making a PB (button button) dial,
An outside line dial tone detection circuit 8 that detects an outside line dial tone, a hold tone sending circuit 9 that sends out a hold tone, a cross point switch 10 that sets a call route, a PB receiver 12, 13 that receives a PB double signal of the AC coupling route, and a diode. Bridge DB
, gates G, ~G3, and a CP that performs control information signal transmission control and signal determination processing for each of the above circuits and circuits to be described later.
The control circuit 11 includes a control circuit 11 made up of U.

In addition, in this telephone exchange A, it is possible to make a call between the two door phones D using the telephone C, and for this reason, a door phone call detection circuit 14 which detects a call from the door phone D. ．． 142 and a doorphone call circuit 15. Furthermore, this telephone exchange A can also be connected to a security device, an emergency push button, etc., and when this security signal is input or the emergency push button is pressed, the speaker S of the telephone outlet B is activated.
It is designed to emit a notification sound from P. In addition, in order to emit a notification sound from the telephone outlet B to which each telephone C is connected when a security signal is input or an emergency push button is pressed, the security signal detection circuit 16 generates various notification sounds. Sound generation circuit 17, amplifier AMP,
~AMP. Further, a 1 display control circuit 18 is provided to display the outside line call and internal call status at the telephone outlet B.

Figure 3 shows a block diagram of telephone outlet B, with extension 1
2 is connected to a modular jack M, and a control line 1j is connected to a speaker SP and a voltage detection circuit 2o. Furthermore, the output of the voltage detection circuit 2o drives the light emitting indicator La to display red when the outside line 11 is used, and drives the light emitting indicator Lb to display green when the extension line 12 is used.

The operation of this telephone exchange system will be explained. When the telephone exchange A is turned on and the system is started, the control circuit 1, which consists of a one-chip microcomputer, performs initial settings, then enters a standby state to determine whether an off-hook call has been received or not. It determines the presence or absence of a doorphone call and processes the doorphone call, determines the presence or absence of an extension call and processes the extension call, and processes the outside line call.

Telephone C currently connected to either telephone outlet B
When the handset is raised, the hook/DP detection circuit 2 detects off-hook and outputs a detection signal to the control circuit 11. Note that in the above state, relay contacts r and -rs are switched to the cross point switch 10 side. At this time, the control circuit 11 turns on a predetermined switch of the cross-point switch 10 and sends a pseudo call signal of 400 Hz through the gate G to the telephone outlet B through the cross-point switch 10 and the extension 12. At the same time, the control circuit 11 controls the display control circuit 18 to output a voltage signal that lights up the light-emitting display section La for indicating that an outside line is busy at each telephone outlet B.
Turn on a. Note that, at this time, the light emitting display section Lb is controlled to be in an extinguished state.

This transmission continues until the dial signal is input, and when the first dial signal is detected by the hook/DP detection circuit 2,
The control circuit 11 stops outputting the pseudo call signal and stores the dial data in the built-in buffer memory. Then activate the built-in 3 second timer. If the second dial signal is detected while this timer is operating, it is determined that an outside line call has been made.

If the second dial signal is not input within these 3 seconds, it is determined that the call is an extension call, and the extension call processing is performed.

Now, in the case of an outside call, the data of dial signals that are subsequently input to the buffer memory are sequentially stored, and a signal for operating the DC connection circuit 3 is output. The outside line dial tone detection circuit 8 is connected by the DC connection circuit 3.
detects the outside line dial tone, and the detection signal is sent to the control circuit 11.
, the control circuit 11 sequentially reads out the dial data stored in the buffer memory starting from the first one, operates the dial pulse generating circuit 6, and sequentially sends the dial signal to the outside line! , to be sent. In this way, dial data from telephone C is stored in the buffer memory at the same time as the dial signal is sent to outside line 11.

When the dial data stored in the buffer memory is exhausted and a certain period of time has elapsed, the next call will proceed to an outside line.

In addition, the dial signal is an outside line! , the line connection is interrupted when sending to.

Thereafter, an outside call is made via the connecting transformer T, the crosspoint switch 10, and the extension line 12.

Next, the operation when calling an extension will be explained. First, the first dial signal is from the telephone 1fi connected to telephone outlet B.
If the next dial signal is not input within 3 seconds after the pseudo call signal is input from C and output, the input dial data is determined to be an extension number, and the control circuit 11 turns on from off-hook. A predetermined switch of the cross-point switch 10 is turned off to disconnect the outside line 11, and another predetermined switch is turned on so as to set a call path to the extension line 12. Then, the light-emitting display section La of each telephone outlet B that has been lit from off-hook is turned off, and at the same time, the display control circuit 18 outputs a voltage signal that lights the light-emitting display section Lb indicating that the extension is busy, and the light-emitting display section L
Turn on b. Furthermore, the control circuit 11 includes a sound generation circuit 17.
to output a notification signal for extension calling. This notification signal is superimposed and sent to the control line l of the telephone outlet B on the calling side through another switch of the crosspoint switch 10. At the telephone outlet B sent via the control line l, an extension ring tone is emitted from the speaker SP. When the handset of telephone C connected to telephone outlet B is picked up due to this ringing, the hook
The DP detection circuit 2 detects this off-hook and the control circuit 1
Sends a detection signal to 1. Based on this off-hook state, the control circuit 11 stops the generation of the voice signal, and also turns on another switch of the crosspoint switch 10 to connect the extension 12 of the telephone outlet B that made the call and the telephone outlet of the called side. B's extension 12 is connected to establish a conversation state. After that, an extension call will be made. In addition,
- In the case of simultaneous ringing, a ringing tone is emitted from the speaker SP of each telephone outlet B.

This general paging is performed by inputting a specific dial signal from telephone set C.

Next, receiving an outside call will be explained. First, the outside line! When an incoming call signal is input from , the incoming call detection circuit 5 detects this incoming call signal and outputs an incoming call detection signal to the control circuit 11. When the control circuit 11 receives this incoming call detection signal, it connects the relay contact ``to the outside line!''.

Switch to the side. Therefore, the telephone C connected to each telephone outlet B connects the external line 1. connected to,
The built-in bell in each telephone C will ring. When the handset of a telephone C connected to a certain telephone outlet B is raised due to this ringing, this off-hook state is detected by the hook/DP detection circuit 2, and the control circuit 11 turns on the DC closing circuit 3 based on this detection output. , at the same time switches the crosspoint switch 10 and connects the telephone outlet B connected to the outside line 11 and the off-hook telephone C.
The extension line 12 of the terminal is connected to enable outside calls.

Now, if you want to make an internal call while making an external call, or
If you want to make a doorbell call, you can put it on hold.

First, when the handset of the above-mentioned telephone C is not on-hook in the DC connected state during an outside line call and a dial signal corresponding to hold, for example "0" is sent from this telephone C, the control circuit 11 receives this dial data. It was read and judged to be a pending operation, and extension 2□ and outside line 1. Performs hold processing to release the call path. Then, by switching the cross-point switch 10, the hold-tone generation circuit 9 is operated, and the hold-tone melody signal is sent to an outside line via the coupling transformer T! , and is sent to each control line 13 through the amplifier AMP4, the crosspoint switch 10, and the amplifiers AMP to AMP3.

Also, under the control of the control circuit 11, a voltage signal is sent from the display control circuit 18 to the control line ! for simultaneously lighting up the light-emitting display sections La and Lb! , to each telephone outlet B, and lights up the light-emitting display sections La and Lb.

In other words, there is an outside line due to the hold music melody signal! , notifies the other party's phone IC that it is on hold, and at the same time connects each phone C to the speaker SP of the phone outlet B.
A hold melody sound is emitted from the screen to inform the user that the hold is on hold, and at the same time, the light emitting display sections La and Lb are simultaneously lit to indicate that the hold is on hold.

After the call is put on hold, even if the telephone C is put on the hook and the call ends, the DC connection circuit 3 is maintained in the ON state and the call operation is started.

Next, if you want to make an outside call again, release the hold. To release the hold, all you need to do is send a dial signal of "0" from any off-hook telephone C, and if the dial data of "O゛" is detected. The control circuit 11 is a hold tone generator 9
The operation of the terminal is stopped, and each part is controlled to return to the original outside line communication state. When the call after the call is released from hold is ended and the off-hook telephone C is turned on-hook again, the DC connection by the DC connection unit 3 is released under the control of the control circuit 11.

Now, after entering the above-mentioned hold state, if the input dial data is other than '7'' which designates an intercom call, it is assumed to be an extension call and the extension number is connected to the telephone outlet using the above-described extension process.

The case where there is a doorbell call will be described below. When making a call from the door phone D, a push button provided on the door phone D is pressed. When the push button is pressed, the door phone call detection circuit 14 outputs a signal indicating that there has been an impedance change to the control circuit 11. The control circuit 11 determines that the output is from the door phone D based on the output, operates the sound generation circuit 17, and switches the cross point switch 10 in a predetermined manner to send a ring tone to each telephone outlet B. A ring tone is emitted from the speaker SP of B. Then, when the householder who asked about the ring tone picks up the handset of one of the telephones C, the handset is connected to the hook/DP of the telephone outlet B where the handset was off-hook.
A signal indicating that the handset is off-hook is sent to the control circuit 11 from the detection circuit 2, and the control circuit 11 switches the cross-point switch 10 to connect the telephone C whose handset is off-hook to the doorphone call circuit 15, and also connects the doorphone call circuit 15 to the telephone C whose handset is off-hook. A switch element S provided between D and the door phone call circuit 15 is turned on to enable door phone calls.

The above was an explanation of the basic configuration of the telephone switching system, but
The features of this embodiment will be described below.6 In this embodiment, the volume of the ring tone etc. from the speaker SP of the telephone outlet B is switched between daytime and nighttime. is for lowering the volume.

The configuration will be explained below. First, a clock circuit 19 for counting time is provided, and the clock circuit 19 inputs information as to whether it is daytime or nighttime to the control circuit 11G. FIG. 2 shows a block diagram of the audio output side including the sound generation circuit 17, and the sound generation circuit 17 includes a notification sound generation circuit 17a, a voltage dividing circuit 17b including voltage dividing resistors R+ and R2, a switch sw, , sw2 and a level switching circuit 17c. Notification sound generation circuit 1
Reference numeral 7a generates a notification signal such as a buzzer sound, and the type of sound is controlled by the control circuit 11.

The voltage dividing circuit 17b creates a signal by attenuating the volume of the signal from the notification sound generating circuit 17a to a low level. Further, the level switching circuit 17c is a circuit that switches the level of the notification sound input to the speaker amplifier AMP to a high volume or a low volume under control from the control circuit 11. still,
The clock means is composed of a clock circuit 19, and the judgment switching control means is composed of a control circuit 11, a voltage dividing circuit 17b, and a level switching circuit 17c.
It is composed of etc. Here, the switching circuit 21 is the cross point switch 10 and the relay contacts r1 to r, and the amplifier AMP that drives the speaker SP is the amplifier AMP.
, ~AMP.

Each circuit is switched and controlled by processing from the control circuit 11.

Figure 4 shows the general flow of the operation.
When a condition occurs to generate a notification sound such as an incoming call from 1,
The control circuit 11 reads the time from the clock circuit 19, and if it is determined that the time is night 1, which is preset in the system (specifically, for example, from 8 p.m. to 7 a.m.
(defined as nighttime), the switch SW shown in Figure 2
Turn on 2. At this time, the signal from the notification sound generation circuit 17a is voltage-divided by the resistors R, , R2 and the signal is attenuated, so that the control line! The volume of the audio signal supplied to , is low.

Further, if the time value is 1 AM, the switch SW is turned on and the volume becomes louder. Then, the switching circuit 21 specifies 1!13 among the characteristics and sends out the notification sound.

[Effects of the Invention] As described above, the present invention includes a clock means for counting the time, and a method that determines whether it is daytime or nighttime based on the time of the clock means, and lowers the volume of the ringing tone from the speaker of the telephone outlet at night. Since the above-mentioned telephone exchange is equipped with a determination switching control means for switching to the daytime or nighttime, it determines whether it is daytime or nighttime based on the time on the clock means and automatically switches the volume of the ringing tone from the speaker of the telephone outlet. By lowering the volume during the day, calls can be made at the optimal volume both during the day and at night.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of an embodiment of the present invention, Fig. 2 is a circuit diagram showing a schematic configuration of the main parts of the above, Fig. 3 is a block diagram of the telephone outlet of the above, and Fig. 4 is an explanation of the operation of the same. FIG. 5 is a system configuration diagram of the telephone exchange system. A is a telephone exchange, B is a telephone outlet, C is a telephone, E
is the telephone office, SP is the speaker, 11 is the control circuit, 19 is the clock circuit, ! , is an outside line, ! 2 is an extension line, and l is a control line. Agent Patent Attorney Ishi 1) Chief 7 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) A telephone exchange connected to a telephone office via an outside line;
It consists of a plurality of telephone outlets connected to this telephone exchange by extension lines and control lines, respectively, and to which commercially available telephones can be connected detachably. In addition to making telephone calls and extension calls possible with the telephone, a notification signal is sent from the telephone exchange via a control line to a telephone outlet equipped with a speaker, so that the speaker of the telephone outlet issues a ring tone. In a telephone switching system, there is provided a clock means for counting the time, and a determination switching control means for determining whether it is daytime or nighttime based on the time of the clock means and switching the volume of a ringing tone from a speaker of a telephone outlet to be lowered at night. A telephone exchange system comprising the above-mentioned telephone exchange.