JPH04269057A - Home use telephone exchange system - Google Patents

Abstract

PURPOSE:To identify to which call a call tone responds in the case of various calling with a bell built in a telephone set. CONSTITUTION:The system is provided with a simulating incoming signal generating circuit 20 which sends a simulating incoming signal and rings a notice means such as a bell built in a telephone set to make calling. A control circuit 11 discriminates an external line call, an extension call and a doorphone call and allows the said simulating incoming signal generating circuit 20 to vary a tone color of the simulating incoming signal in response to each call.

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 that allows outside and internal calls to be made using commercially available telephones.

0002

BACKGROUND OF THE INVENTION This type of home telephone switching system includes a telephone exchange connected to an outside line, which is a public telephone line, and an extension line serving as a telephone line and a control line serving as a signal transmission line to the telephone exchange. It consists of a plurality of telephone outlets to which commercially available telephones can be detachably connected, and the above-mentioned telephone exchange switches and forms communication paths between outside lines and internal lines, or between extension lines, and the telephones connected to the telephone outlets can be used to make external calls and make internal calls. There is one that allows you to make phone calls. In addition, in this type of home telephone exchange system, the door intercom is connected to the telephone exchange through a telephone line, and the telephone can also be used to make door intercom calls.

0003

By the way, in this type of home telephone switching system, when an incoming outside call is detected, a pseudo incoming signal identical to the incoming signal sent from the central office is sent to each telephone via the extension line. There are some types of calls that ring the built-in bell of the telephone to notify you of an incoming outside call.
Furthermore, in the case of an extension call or a doorphone call, the above-mentioned pseudo-incoming signal is sent to the telephone set, and the built-in bell of the telephone rings in the same manner as when an outside call is received, thereby performing the extension call or doorphone call.

[0004] However, in the above case, there is a problem in that it is not possible to determine what type of call the caller is responding to, and it is not possible to judge in advance what kind of response the person on the called side should make. Ta. The present invention has been made in view of the above points, and its purpose is to ensure that even when various calls are made, it is possible to identify the type of call by using a notification means such as a built-in bell of a telephone. The purpose of the present invention is to provide a home telephone exchange system that can make decisions.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a method for making external calls and extension calls by sending a pseudo incoming call signal through the extension line and ringing a notification means such as a built-in bell of the telephone. The apparatus includes an incoming call signal generating means, and a control means for discriminating between an outside call and an extension call and varying the tone of the pseudo incoming signal generated by the pseudo incoming signal generating means in response to each call.

[0006] In addition, when a doorphone is connected to a telephone exchange through a telephone line and is capable of making a doorphone call using the above-mentioned telephone set, the above-mentioned doorphone ringing sound is also generated by a pseudo-incoming call signal from a pseudo-incoming signal generating means and a pseudo-incoming signal via an extension line. If the control means changes the tone of the doorphone call so that it can be distinguished from an outside line call or an extension call, the doorphone call can also be distinguished from an outside line call or an extension call. It is preferable.

[0007]

[Operation] By configuring the present invention as described above,
By changing the tone of the ringing tone emitted from the telephone's notification means depending on the type of call, it is possible to reliably determine what kind of call it is even if various calls are made using the telephone's built-in bell or other notification means. This is how it was done.

[0008]

Embodiment FIGS. 1 to 3 show an embodiment of the invention. As shown in FIG. 2, the home telephone switching system of this embodiment has the following features:
A telephone exchange A connected to an outside line L0, which is a public telephone line, via a disconnector G and a protector H, and this telephone exchange A.
A plurality of telephone outlets B are connected to each other by an extension line L1 as a telephone line and a control line L2 as a signal transmission line, and a commercially available telephone C is detachably connected to the telephone exchange A. L1 or extension L
1. By switching and forming communication paths between two telephones, telephone C connected to telephone outlet B can be used to make outside calls and internal calls. In this home telephone exchange system, the doorphone D is connected to the telephone exchange A through the telephone line L3, and the telephone C can be used to make doorphone calls. In addition, in the case of this embodiment, for example, 4DK to 6D
In K's house, if telephone outlets B are installed in each room by advance wiring, up to six telephones C can be connected.

Each telephone outlet B is provided with a modular jack (not shown), through which a general commercially available telephone C can be detachably connected. Also, this telephone outlet B is connected to the control line L2.
A speaker for reproducing notification signals such as extension ringing or doorbell ringing sent via the control line L2 and a display signal, which is a voltage signal sent via the control line L2, are used to distinguish between the display signal, which is a voltage signal sent via the control line L2, It is equipped with a light-emitting display section that displays an outside line call, etc., and these speakers and light-emitting display perform notification and display operations.

Hereinafter, the configuration of the telephone exchange A of the home telephone exchange system having the above-mentioned basic configuration will be briefly explained along with its operation. In telephone exchange A, as shown in Fig. 1, relay Ry is connected for each extension L1 to which telephone outlet B is connected.
, and the contact r of this relay Ry connects the internal line L1 and the external line L
0 and supplies a communication current from the communication current supply circuit 4 for an extension call or a doorphone call in a state where the extension line L1 is disconnected from the outside line L0. Note that the contact r of the relay Ry is normally switched to the side that separates the extension line L1 from the outside line L0, and is switched to the side of the outside line L0 when an outside line is received.

[0011] Now, if an incoming outside line is detected by the incoming call detection circuit 5, the control circuit 11 constituted by the CPU causes the DC connection circuit 3 to perform DC connection to capture the line, and By ringing the built-in bell, a ringing operation is performed when an outside call arrives. However, in a home telephone exchange system equipped with six telephones C as in the case of this embodiment, all telephones C
It is not possible to connect the telephone to the outside line L0 and have the built-in bell ring in response to an incoming call signal from the central office. Therefore, a pseudo incoming call signal generating circuit 20 is provided which generates a pseudo incoming signal identical to the above incoming call signal, and the pseudo incoming signal generating circuit 20 sends the pseudo incoming signal to the extension L1 connected to each telephone C to ring the built-in bell. Make it ring. When the handset of telephone C is picked up in response to this outside line call, control circuit 11 performs operational control so that telephone C can make an outside line call. Here, the hook/DP detection circuit 2 (
However, DP (dial pulse) is detected, and when the hook/DP detection circuit 2 detects that the handset is picked up and the telephone C is off-hook, the control circuit 11 activates the corresponding relay Ry. is driven to switch the contact r, and connect the extension line L1 to the outside line L0. This allows you to make outside calls. It should be noted that the DC connection circuit 3 releases the DC connection state when the extension L1 to which the telephone C is connected is connected to the outside line L0. The hook/DP detection circuit 2 also has a function of detecting a dial signal based on a DP signal input from the telephone C.

When making an outside line call from telephone C, the user picks up the handset and performs a dialing operation. In the following explanation, the case where the telephone line contract is a dial pulse line will be explained. The off-hook state of the telephone C is detected by the hook/DP detection circuit 2, and at this time the control circuit 1
1 drives the pseudo dial tone generation circuit 21 to generate a pseudo dial tone similar to the dial tone (two tone (400 Hz)) sent from the telephone office, and sends this pseudo dial tone off-hook through the analog switch network 10. The message is sent to extension L1 to which telephone C is connected. However, the analog switch shown by the square in FIG.
Although related to the switching of other communication paths and signal paths, the explanation of the operation of these analog switches will be omitted in the following explanation. Further, the pseudo beep from the pseudo beep generating circuit 21 is outputted through a filter circuit 23 that transmits a 400 Hz signal. Then, the transmission 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 switching system, call processing such as internal calls is performed by inputting a specific dial signal from telephone C, so even if a dial operation is performed on telephone C, an outside call cannot be made. This is not always the case, and may involve call processing such as making an extension call. Therefore, the control circuit 11 that receives the dial signal starts making an outside call only when the number of digits of the dial signal exceeds the number of digits of the dial signal (two digits in the case of this embodiment) assigned for call processing. Start. This outside line transmission is performed by driving the DP sending circuit 6 to send a DP signal to the outside line L0. When the other party answers in response to this outside line call, the polarity of the outside line L0 is reversed, so this polarity reversal is detected by the polarity reversal detection circuit 16, and then the outside line L0 and the extension line to which the telephone C that made the outside line call is connected are detected. Switch contact r to connect with L1,
Allows for outside calls.

[0014] When making an outside line call as described above, the called party may be busy on a call. Therefore, this home telephone exchange system is equipped with an outside line dial tone detection circuit 8 that detects a dial tone transmitted through the outside line L0, such as a busy tone, and detects a busy tone by this outside line dial tone detection circuit 8. If detected, the control circuit 11 operates the signal tone generation circuit 22 to generate a busy tone (busy tone), and sends this busy tone to the telephone C that made the outside line call.

When making an extension call, a dial signal is input using the telephone C in the same manner as in the case of making an outside call. The control circuit 11 determines that this is an extension call from the number of digits in the dial signal, and at this time drives the voice signal generation circuit 22 to connect the phone to the telephone outlet via the control line L2 corresponding to the telephone C of the called party. A call signal is sent to telephone outlet B, and the extension ring tone is sounded from the speaker of telephone outlet B. Then, the hook/DP detection circuit 2 detects that the telephone C on the called side responds and is off-hook, and the control circuit 11 controls the analog switch network 10 to connect the extension L1 corresponding to the telephone C on the calling side. A connection is made to the extension L1 corresponding to the telephone C of the called party, thereby making it possible to make an extension call. Note that when an outside line call or an extension call is being made as described above, the control circuit 11 controls the light-emitting display section of the telephone outlet B with the display control circuit 18 to indicate various types of calls such as an extension call or an outside call. Display. Further, the circuit indicated by the broken line frame A in FIG. 1 is provided in common for each extension line L1 and control line L2. The phototriac FT in the circuit within this broken line frame A is for controlling the sending of a pseudo-incoming call signal, and the amplifier circuit 29 is for amplifying the audio signal sent to the telephone outlet B.

By the way, the above-mentioned extension call is made to a specific telephone C, but if the telephone C to be called is unspecified, it is possible to make a simultaneous call. In this case, the dial signal corresponding to the simultaneous ringing is transmitted to telephone C.
, the extension ring will sound from each telephone outlet B all at once, and if any telephone C goes off-hook in response to this call, the control circuit 11 will switch that telephone C off-hook.
In response to the detection output of the hook/DP detection circuit 2 corresponding to the telephone C, the extension L1 corresponding to the telephone C is connected to the extension L1 corresponding to the telephone C of the calling party, thereby enabling an extension call.

Furthermore, this home telephone exchange system is equipped with a hold tone sending circuit 9 which allows a hold operation to be performed and sends out a hold melody tone. In addition, if the telephone line contract is a push-button line, push-button telephone C
Except that the PB receiver 12 detects a dial signal based on a PB (push button) signal from the PB dialer 7 and sends the dial signal to the outside line L0 while the line is closed by the DC connection circuit 3. , operates in the same way as for dial-pulse lines. Note that this DP/PB switching is performed by the setting section 26.

Next, the case where there is a doorbell call will be explained. In the case of this embodiment, two door phones D can be connected, and the door phone monitoring control circuit 14 detects that the push button of the door phone D is pressed, and upon receiving this detection output, the control circuit 11 is the audio signal generation circuit 22
A calling signal corresponding to the doorphone call is sent from the telephone outlet B to each telephone outlet B, and the doorphone ringing tone is sounded at the telephone outlet B. When the handset of one of the telephones C is picked up in response to this doorphone call, the control circuit 11 connects the call line L3 of the doorphone D that made the call and the telephone C that responded.
The extension line L1 of the telephone is connected by switching the analog switch network 10 to enable doorphone calls. Note that the doorphone call is performed via the doorphone call circuit 15. In addition, the door phone D' shown in Fig. 2, which is equipped with a monitor camera that photographs and monitors visitors from indoors, can be connected as the door phone D. In this case, the visitor can be confirmed using the monitor TV unit I installed indoors. can.

Other functions provided by the home telephone switching system will be explained below. In this home telephone exchange system, an emergency push button J or an alarm unit K can be connected, and when the emergency push button J is pressed or an alarm signal is input from the alarm unit K, it is detected by the alarm signal detection circuit 24. In the event that The alarm can be sent to the door phone D, and the door phone D can issue an alarm outdoors. In this embodiment, the alarm is issued from only one door phone D, but the alarm may be issued from both door phones D.

[0020] Furthermore, each electric lock N provided on the entrance door where the door phone D is installed can be connected, and during a call using the door phone D, the electric lock N can be unlocked from the telephone C that is making the call. When the dial signal is input, the relay R can be driven to unlock each electric lock N. In this way, the home telephone exchange system of this embodiment can be used not only in ordinary houses but also in condominiums and the like.

Furthermore, in the case of this embodiment, a specific extension (
In the following explanation, each extension from a to f in sequence from the top in FIG.
It will be explained as follows. In this embodiment, a facsimile can be connected to this specific extension (which is referred to as extension f). When connecting a facsimile in this manner, a setting is made in the setting section 26 to indicate that the facsimile is connected to extension f (for example, by turning on a switch).

When a facsimile is connected and an incoming call is received while at home, the control circuit 11 gives priority to telephone C to perform the ringing operation, and when the incoming call is for a facsimile, the extensions a to e that received the incoming call are A specific dial signal is input from telephone C (same operation as for the extension call described above), and the call status is transferred to the facsimile of extension f. As mentioned above, when the user is at home, in order to give priority to incoming calls from telephone C by corresponding to extension circuits a to e, first, when an outside line is received, a pseudo ringing signal is not sent to extension f to which the facsimile is connected. .

More specifically, if a facsimile is connected to extension f and a call is received while you are at home,
The control circuit 11 first sends a pseudo incoming call signal to the telephones C corresponding to extensions a to e. As a result, the built-in bell of each telephone C rings to notify that there is an incoming outside call. In response to this call, one of the telephones C is taken off-hook, and if the incoming call corresponds to a facsimile, the user can tell from the ringtone that the call is for a facsimile. Therefore, if the call is for a facsimile, a dial signal corresponding to the extension f to which the facsimile is connected is input. Control circuit 1 receiving this dial signal
1 generates a pseudo paging signal from the pseudo paging signal generation circuit 20 and sends it to extension f to cause the facsimile to automatically respond;
This makes it possible to receive data by facsimile.

Note that when a facsimile is not connected to extension f, the settings in the setting section 26 are canceled, and the control circuit 11 sends pseudo incoming signals to all extensions a to f, so that the facsimile is not connected to the facsimile. The transfer function does not work. In other words, extension f can also be used as an extension to which telephone C is connected, like the other extensions a to e. In the above case, the operation was performed when the user was at home, but an answering switch P is provided in consideration of the case where a facsimile call is received when the user is out. The operation state of the absence set switch P is detected by the switch operation detection circuit 27. That is, the switch operation detection circuit 27 applies a voltage to the absentee set switch P, and detects the operating state from the voltage change when the absentee set switch P is operated. When the operation state of the answering switch P is detected, the detection output is sent to the control circuit 11.

When an outside call is received while the answering switch P is set to the out-of-home state, the control circuit 11
is the pseudo incoming signal generation circuit 2 for all extensions a to f.
A pseudo incoming call signal is sent from 0, thereby causing the facsimile to respond automatically. By the way, NTT provides a silent call termination service in its facsimile communication network, and some users wish to receive this service. Therefore, in the case of this embodiment, when the above service is received, the 1
A ring signal detection circuit 28 is provided for detecting a 300 Hz facsimile ring signal. In other words, when a facsimile ringing signal is detected, the pseudo incoming signal detection circuit 20 sends a pseudo incoming signal only to the extension f to which the facsimile is connected, thereby eliminating the need for the user to perform a forwarding operation when he or she is at home. The facsimile can automatically receive calls.

Furthermore, the home telephone exchange system is equipped with a communication device U having the same calling function as the door phone D, and is used for communication between rooms. That is, the communication device U is installed in a washroom, a toilet, a garage, etc., a monitoring control circuit 31 and a communication circuit 32 are provided for the communication device U, and communication between rooms is established in the same manner as in the case of the doorbell D. This is what we do.

In this embodiment, simultaneous broadcasting can be performed from the communication device U and the telephone outlet B, and it is set by the setting section 26 whether or not this simultaneous broadcasting function is selected. Now, if the simultaneous broadcast function is selected, even if the handset of telephone C is not picked up within 30 seconds after the simultaneous ringing tone is sounded from the communication device U and telephone outlet B, the telephone outlet A communication call can be made between B and the communication device U. However, in this case, when the handset of any telephone C is picked up, the extensions corresponding to that telephone C and the telephone C of the calling party are connected, and an extension call state is established.

[0028] If the above-mentioned simultaneous broadcast function is not selected, the above-mentioned simultaneous broadcast cannot be performed, but in this case, if a dial signal corresponding to the simultaneous broadcast is input, a simultaneous call will be made to call each extension. It can be used as a function, and when any telephone C answers, it becomes an extension call state. In such a home telephone switching system that allows outside line calls, internal calls, door phone calls, and indoor calls, it is conceivable that the call states may conflict with each other. Therefore, in this home telephone exchange system, priority is set in the order of outside line calls, door phone calls/indoor calls, and internal calls. In addition,
For doorbell calls and indoor communications, priority is given to later arrivals. In addition, if it is multi-functional as described above, the control circuit 11
Since there is a shortage of input/output ports, two input/output port expansion units 30 are used in the telephone exchange A shown in FIG.

By the way, recently, commercially available telephones C
Cordless phones are becoming popular. Therefore, it is conceivable to use this cordless phone in the above-mentioned home telephone exchange system. However, when a cordless phone is used as telephone C in the home telephone exchange system described above, the quick call reception function of this cordless phone (a function that allows you to make calls by simply lifting the cordless part of the cordless phone) cannot be used for internal calls and doorbell calls. . In other words, the quick call function does not work unless an incoming call signal is received, so if an alarm sounds after a few seconds have passed after lifting the cordless part, you must press the button for an external call or an internal call to make an internal call. In the case of a cordless phone, there is a problem in that, like the normal telephone C, it is impossible to make an extension call without having to perform any operations.

Therefore, in this embodiment, whether or not a cordless phone is connected as the telephone C is set in the setting section 26. When a cordless phone is used, after sending an extension call or a doorbell call (a "ping pong" or "pup pup" sound) using the telephone outlet B to each extension, the pseudo ring tone generation circuit 20 is used for each extension L1. Sends out a pseudo incoming signal. However, the transmission time is set to 30 seconds. In this way, even if a cordless phone is used as telephone C, you can make extension calls and doorbell calls by simply lifting the cordless part and without performing any operations.In other words, you can make use of the quick call function of the cordless phone to make extension calls and doorbell calls. . However, if a facsimile is connected to extension f, it is necessary to not send the pseudo incoming signal to extension f to which this facsimile is connected, so that the facsimile does not automatically respond with this pseudo incoming signal. There is. Further, if all telephones C are not cordless phones, no pseudo incoming call signal is sent.

By the way, if both a cordless phone and a normal phone are used as the telephone C, the built-in bell of the normal telephone C will ring unnecessarily and duplicate calls will be made. Therefore, if the setting section 26 is configured so that the extension to which the cordless phone is connected can be specified and set using, for example, a dip switch, and a pseudo incoming signal is sent only to the extension to which the cordless phone is connected, the extension from telephone outlet B can be set. This is preferable because it is possible to prevent the built-in bell of telephone C from ringing unnecessarily after a call or a doorbell call.

The above has been an overall explanation of the home telephone exchange system, but the features of this embodiment will be explained below. When a cordless phone is used as telephone C as described above, if telephone outlet B and cordless telephone are installed at a separate location, the ring tone corresponding to an extension call or doorbell call issued from telephone outlet B may be Therefore, it is impossible to determine whether the call is an outside line call, an extension call, or a doorbell call just by listening to the built-in bell ringing from the cordless phone. Therefore, there is a problem in that the user cannot judge what kind of response should be given, and in some cases may give a strange response.

Therefore, in this embodiment, the tone color of the pseudo-incoming signal outputted from the pseudo-incoming signal generating circuit 20 is made different for each call. For example, if the pseudo incoming signal corresponding to an extension call is made to have a signal waveform that rings for 1 second and stops for 2 seconds, similar to the incoming signal sent from the central office, the pseudo incoming signal corresponding to an extension call will be as shown in Figure 3. As shown, the 1-second ringing period of the pseudo-incoming call signal is intermittent, for example, by ringing for 0.3 seconds, stopping for 0.4 seconds, and ringing for 0.3 seconds. In this way, it is possible to distinguish between an incoming call from an outside line and an incoming call from an extension line based on the ringing tone. In addition, in the case of a doorphone call, the above-mentioned intermittent ringing state may be further changed.

By the way, although the above-mentioned intermittent method is applied in this embodiment, it is of course possible to ring the built-in bell of telephone C,
The method is not limited to the above method as long as various calls can be identified from the tone color. Furthermore, in the case of this embodiment, when a cordless phone is used as telephone C, the built-in bell of telephone C is made to ring by a special pseudo incoming call signal, but telephone outlet B which does not have a ring notification function is used as telephone outlet B. Needless to say, the present invention can also be applied to a home telephone exchange system in which various calls are made using the built-in bell of telephone C.

[0035]

Effects of the Invention As described above, the present invention provides a means for generating a pseudo incoming call signal that sends out a pseudo incoming call signal through an extension line and rings a notification means such as a built-in bell of a telephone, and and a control means for discriminating extension calls and varying the tone of the pseudo incoming signal generated from the pseudo incoming signal generating means in response to each call, so that the tone of the ringing tone emitted from the notification means of the telephone is controlled. Even if various calls are made by changing the number depending on the type of call and using a notification means such as a built-in bell of the telephone, it is possible to reliably determine what kind of call it is.

[0036] Furthermore, in the case where a door intercom is provided which is connected to a telephone exchange by a telephone line and is capable of making door intercom calls using the above-mentioned telephone set, the above-mentioned door intercom ring tone also generates a pseudo incoming signal from the pseudo incoming signal generating means through the extension line. If the control means changes the tone of the doorphone call so that it can be distinguished from an outside line call or an extension call, the doorphone call can also be distinguished from an outside line call or an extension call. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the circuit configuration of a telephone exchange according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a system configuration same as the above.

FIG. 3 is an explanatory diagram showing an example of a waveform of a pseudo-incoming signal used in the above.

[Explanation of symbols]

A Telephone exchange C Telephone D Doorphone L0　　External line L1 extension L3 Call line 11 Control circuit 20 Pseudo incoming signal generation circuit

Claims (2)

[Claims] Claim 1: Consisting of at least a telephone exchange connected to an outside line, which is a public telephone line, and a plurality of commercially available telephones connected to this telephone exchange by extensions, the telephone exchange can connect outside lines and extensions, or between extensions. In a home telephone switching system that switches and forms communication paths to enable external and internal calls using the above-mentioned telephone, a pseudo incoming call signal is sent through the internal line to notify external and internal calls using the built-in bell, etc. of the telephone. and control means for discriminating between an outside line call and an extension call and varying the tone of the pseudo incoming signal generated by the pseudo incoming signal generating means in accordance with each call. A home telephone switching system characterized by comprising: 2. A door intercom connected to a telephone exchange through a telephone line and capable of making a door intercom call using the telephone; the door intercom ringing sound also includes a pseudo incoming call signal generation means that sends out a pseudo incoming signal through an extension line; 2. The home telephone exchange according to claim 1, wherein the control means changes the tone of the doorphone call so that it can be distinguished from an outside line call or an extension call. system.