JPH04192958A - Simultaneous broadcasting system for household simple telephone exchange - Google Patents

Abstract

PURPOSE:To improve convenience at the telephone exchange by picking up the receiver of a telephone set in a standby state so as to enable simultaneous broadcasting, and executing a prescribed transmitting operation later by a dial operation so as to enable transmission. CONSTITUTION:When the receiver of the telephone set is picked up in the standby state, a simultaneous broadcasting enable state is obtained and afterwards, when the dial signal of one digit is inputted, an extension transmitting state is obtained. Further, when the dial signal of more than two digits is inputted, a line wire transmitting state is obtained. Thus, the simultaneous broadcasting enable state can be obtained without executing any dial input for simultaneous broadcasting, the convenience can be improved while easily utilizing the function of high possibility to be frequently used, and it is not necessary to store the dial signal for simultaneous broadcasting.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a simple telephone exchange for home use, which switches and forms communication paths between external lines and internal lines, or between internal lines, thereby making it possible to make external and internal calls using a commercially available telephone. It concerns equipment and simultaneous broadcasting methods.

[Conventional technology]

The system configuration of this type of home simple telephone exchange equipment is described in the seventh section.
As shown in the figure. This simple home telephone exchange device connects an outside line I, which is a public telephone line, via a disconnector G and a protector H. , and a plurality of telephone outlets B connected to the telephone exchange A through an extension l as a call line and a control line l as a signal transmission line, respectively.
It consists of a commercially available telephone C that is detachably connected to this telephone outlet B, and an external line L and an extension line ! to the above-mentioned telephone exchange. Alternatively, the communication paths between the extension lines 12 can be switched and formed, so that an outside line call and an internal call can be made using the t-filling machine C connected to the telephone outlet B. In addition, in this home simple telephone exchange device, a door phone D is connected to a telephone exchange A through a telephone line 14, and a door phone call can also be made using the telephone C.

Each telephone outlet B is provided with a modular jack M, through which a general commercially available telephone C can be detachably connected. In addition, this telephone outlet B is connected to a speaker SP for reproducing notification signals such as an extension ring tone or a door phone ring signal sent via the control line l, and a speaker SP which is sent via the control line l. a light-emitting display section La that distinguishes a display signal that is a voltage signal to indicate whether an internal call is in progress or an external call is in progress;
Lb, and these speakers SP and light emitting indicators La and Lb are used to perform notification and display operations.

Note that the volume of the speaker SP can be adjusted using a volume control switch vS.

[Problem to be solved by the invention]

By the way, in the conventional simple telephone switching device of this type for home use, as shown in FIG. 8, when the handset of telephone C is picked up in the standby state, it becomes ready to make a call, and when a one-digit dial signal is then input, the extension call is made. If a dial signal of 2 or more digits is entered, an outside call will be made. If a specific 1-digit dial signal is entered in the same way as for the extension call above, a call will be made from any telephone C. The input voice can be sent to each telephone outlet B through the control line 1 for simultaneous broadcasting.

However, in home simple telephone exchanges equipped with this kind of simultaneous broadcasting function, the above-mentioned simultaneous broadcasting function is often used to convey business matters, rather than when individual extension calls are made by calling an extension. Therefore, in the case of simultaneous broadcasting, forcing the user to input a dial signal corresponding to simultaneous broadcasting, as in the case of extension call, poses a problem in terms of usability.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a simultaneous broadcasting system for a home simple telephone exchange device that can perform simultaneous broadcasting without dialing. It is in.

[Means to solve the problem]

In order to achieve the above object, the present invention first becomes ready for broadcasting when the receiver of the telephone is picked up in the standby state, and then when a predetermined call operation is performed by dialing,
This will allow you to make calls.

Furthermore, the telephone exchange may be provided with an audio signal detection means for detecting the audio signal input from the telephone set, so that when the telephone receiver is picked up in the standby state and voice is input, the system becomes ready for broadcasting all at once. As described above, the present invention enables a state in which simultaneous broadcasting is possible when the receiver of a telephone is picked up in a standby state, thereby eliminating the need to input any dial signal for simultaneous broadcasting.

〔Example〕

An embodiment of the present invention is shown in FIGS. 1 to 6.

First, the configuration of telephone exchange A will be briefly explained along with its operation. Note that the following description will be made with reference to FIG. 2. To this telephone exchange, the extension IT to which telephone outlet B is connected is
Relay contacts r1 to r are provided for each line, and these relay contacts r1 to r2 disconnect and disconnect the extension r2 and the outside line 11, allowing an extension call or a doorphone call while the extension line 12 or the outside line l is disconnected. The communication current for communication is supplied from communication current supply circuits 41 to 4. It should be supplied from Note that the relay contact r+""'rs is normally switched to the side that disconnects the extension line 12 from the outside line l, so that when an outside line is received, etc. , side. Now, if an incoming external call is detected by the incoming call detection circuit 5, the control circuit composed of the CPU! ■Or relay contact r, ~r, external line! ! 11I
Control is performed to switch to external line 1.i. The outside line incoming signal sent through the telephone C is sent to the telephone C, and a built-in ringer or the like of the telephone C is sounded to make an outside line call. When the user picks up the handset of telephone C in response to this call, an outside call becomes possible. By the way, hook/DP detection circuits 21 to 2. are connected to the telephone outlet B side of the relay contacts r1 to r.
is installed to detect the dial signal based on the dial pulse (DP) signal input from telephone C and the hook state of telephone C, and as mentioned above, when telephone C is off-hook when an outside call is received. In this case, the control circuit 11 receives the output of the hook/DP detection circuit 2 corresponding to the telephone C and determines that an outside line call is in progress. A display signal is sent to the outlet B, and the light-emitting display section La of each telephone outlet B is turned on to indicate that an outside line call is in progress. An amplifier AMP is inserted into the transmission path of the display signal and the notification sound signal to be described later to amplify the signals.When making an outside line call from the telephone set C, the receiver is lifted up and dialed. In the following explanation, the case where the telephone line contract is a dial pulse line will be explained. The off-hook status of the above phone C is hook D.
P is detected by the P detection circuit 2, and at this time, the control circuit 11 drives the signal tone generation circuit 20 to send a pseudo dial tone similar to the dial tone (two tone) sent from the telephone office to the telephone C through the extension L. send. Note that the sending of this pseudo dial tone is performed using a hook.
The process is stopped when the DP detection circuit 2 detects the first dial signal. By the way, in this type of home simple telephone switching device, call processing such as internal calls is performed by inputting a specific dialing signal from telephone C, so even if a dial operation is performed on telephone C, an outside call is not processed. It does not necessarily have to be an outgoing call, but may be a call processing such as 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 transmitted via the diode bridge DB by driving the DP sending circuit 6 to the outside line I.
! This is done by sending a DP times signal to 1. When the other party answers in response to this outside line call, the polarity of the outside line 11 is reversed, so this polarity reversal is detected by the polarity reversal detection circuit 16, and then the outside line L is connected to the telephone C that made the outside line call. Extension l! Relay contact r is switched to connect to the outside line to enable outside calls. At this time as well, the display control circuit 18 causes the telephone outlet B to display an outside line call in progress. Further, after the polarity reversal is detected by the polarity reversal detection circuit 16, both ends of the diode inserted in the outside line 1 are short-circuited by the relay contact r4, and the direct current resistance of the telephone connected to the outside line 11 is reduced. This is to eliminate the increase. Further, a dial tone transmitted through the outside line l, such as a busy tone, is detected by an outside line dial tone detection circuit 8,
At that time, extension 1. A busy tone is sent through the terminal.

When making an extension call, a dial signal is input using the telephone C in the same manner as when 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 notification sound generation circuit 17 to connect the telephone outlet B to the telephone outlet B through the control mJIzt corresponding to the telephone C of the called party. A notification tone signal is sent to the telephone outlet B, and an extension ring tone is sounded from the speaker SP of the telephone outlet B. Then, the hook/DP detection circuit 2 detects that the telephone C on the called side responds and goes off-hook, and the control circuit 11 controls the crosspoint switch 1o to connect the extension corresponding to the telephone C on the calling side! ! A connection is made between the telephone number C and the extension l corresponding to the telephone C of the called party, thereby making it possible to make an extension call.

At this time, the display control circuit 18 causes the telephone outlet B to display the extension call status.

By the way, whether the above-mentioned extension call is made to a specific telephone C or whether the telephone C to be called is unspecified, it is possible to make a general call. In this case, when a dial signal corresponding to simultaneous ringing is input from telephone C, an extension ring will sound from each telephone outlet B at the same time, and if any telephone C goes off-hook in response to this ringing, In response to the detection output of the hook/DP detection circuit 2 corresponding to the telephone C, the control circuit 11 connects the extension 12 corresponding to the telephone C and the extension l corresponding to the telephone C on the calling side, and performs an extension call. possible.

Furthermore, this home simple telephone exchange device is equipped with a hold tone sending circuit 9 that allows a hold operation to be performed and sends out a hold melody tone. In addition, if it is a telephone line contract or a button line, the PB receiver 12.13 detects the dial signal from the button type telephone C using the PB double signal, and the DC connection circuit 3 closes the line. The operation is the same as in the case of the dial pulse line, except that the PB dialer 7 sends a dial signal to the outside line l in the state in which the dial pulse line is executed.

Furthermore, a power supply voltage detection circuit 19 for detecting a drop in the power supply voltage is provided to cope with the case where the contents stored in the buffer inside the control circuit 11 are destroyed due to a drop in the power supply voltage.

Next, a case where there is a doorbell call will be described. In the case of this embodiment, two door phones D can be connected, and the door phone call detection circuit 14 detects that a push button of the door phone D is pressed, and upon receiving this detection output, the control circuit 11 A notification sound signal corresponding to the doorphone ringing is sent from the notification sound generation circuit 17 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 intercom call, the control circuit 11 connects the telephone line 14 of the intercom D that made the call and the extension l of the telephone C that answered with the switch S3. Connection is established by turning on any one of S2 and switching the cross point switch JO, and a doorphone call is made possible.

Here, the doorphone call is made via the doorphone call circuit 15.

The features of this embodiment will be explained below. As shown in the state transition diagram of FIG. 1, in the home simple telephone switching device of this embodiment, when the handset of telephone C is picked up in the standby state, it first enters the broadcast ready state and then transmits a single-digit dial signal. When input, the state is set to make an extension call, and when a dial signal of two or more digits is entered, the state is set to make an outside line call. Note that the software of the control circuit 11 was changed in order to achieve the above operating state. In this way, if the handset of telephone C is picked up in the standby state, it will first become ready for simultaneous broadcasting, and the user will be able to use the simultaneous broadcasting function without having to make any dial operations for simultaneous broadcasting. Furthermore, there is no need to memorize dial signals corresponding to simultaneous broadcasting as in the past, so there is an advantage that the system is easy to use.

By the way, in the above case, when telephone C is picked up in the standby state, it becomes ready for broadcasting, but as shown in Figure 2, the voice input from telephone C to telephone exchange A is Audio signal detection circuit 2I that detects a signal
If a voice is input after picking up the handset of telephone C in the standby state, the system may become ready for simultaneous broadcasting, as shown in FIG. In this case, there is an advantage that ambient noise can be prevented from being broadcast all at once after the telephone C is hooked up until the voice is input. Note that this audio signal detection circuit 21 may be configured as shown in FIG. 4, for example. In other words, in the case of FIG. 4, the amplifier 22 amplifies the audio signal input from telephone C, and the characteristic that removes the signal at the frequency used in the pseudo dial tone and PB double signal as shown in FIG. The above-mentioned embodiment comprises a filter 23 having a filter 23, an integrating circuit 24 that integrates the output of the filter 23, and a comparator 25 that determines that an audio signal has been input when the output of the integrating circuit 24 reaches a predetermined level. Although the explanation has been given by taking as an example a simple home telephone switching system that uses an immediate dialing system for internal and external lines, the present invention can also be applied to a device that makes an outside line by inputting a specific dial such as 0 dialing as shown in Fig. 6. Needless to say.

〔Effect of the invention〕

As described above, in the present invention, when the receiver of the telephone is picked up in the standby state, the system first becomes ready for simultaneous broadcasting, and then when a predetermined call operation is performed by dialing, the state becomes ready for making calls. It is possible to enable simultaneous broadcasting without having to input any dials for the purpose of use, making it easier to use functions that are likely to be used frequently for home use, and improving usability. ,
There is an advantage that the user does not need to memorize dial signals for simultaneous broadcasting.

Note that even if the telephone exchange is equipped with an audio signal detection means for detecting the audio signal input from the telephone, and if the telephone receiver is picked up in the standby state and then the voice is input, the system becomes ready for simultaneous broadcasting, but the above case does not occur. In addition to achieving the same effect as above, it also has the advantage of preventing ambient noise from being broadcast all at once after the phone is hooked up and before audio is input.

[Brief explanation of the drawing]

FIG. 1 is a state transition diagram showing a simultaneous broadcast system according to one embodiment of the present invention, FIG. 2 is a circuit diagram of a telephone exchange according to another embodiment, and FIG.
The figure is a state transition diagram showing the simultaneous broadcasting method in the same as above.
The figure is a specific circuit diagram of the audio signal detection circuit, Figure 5 is a characteristic diagram of the same filter as above, Figure 6 is a state transition diagram showing another embodiment of the simultaneous broadcast system, and Figure 7 is a simple home telephone exchange. FIG. 8, which is a system configuration diagram of the device, is a state transition diagram showing a conventional transmission method. A is a telephone exchange, C is a telephone, f is an outside line, 12 is an extension line, l is a control line, and 21 is a voice signal detection circuit. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 6

Claims (2)

[Claims] (1) A telephone exchange connected to an outside line that is a public telephone line, a plurality of telephone outlets connected to this telephone exchange by extension lines as calling lines and control lines as signal transmission lines, and It consists of a commercially available telephone that can be detachably connected, and by switching connections between external lines and internal lines or between internal lines by the telephone exchange, external and internal calls can be made using the telephone, and the telephone exchange is sent out via a control line. The above-mentioned telephone outlet receives a signal indicating a ringing or busy state, announces the ringing tone or indicates that the telephone is busy, and sends the voice input from one of the telephones to each telephone outlet through the control line and broadcasts it all at once. In a home simple telephone exchange equipped with a simultaneous broadcast function, when you pick up the handset of the telephone in standby mode, it first becomes ready for simultaneous broadcast, and then when you perform a predetermined dialing operation by dialing, it becomes ready to make a call. A simultaneous broadcasting system for simple home telephone exchange equipment. (2) The above-mentioned telephone exchange is provided with an audio signal detection means for detecting an audio signal input from a telephone, so that when voice is input after picking up the handset of the telephone in a standby state, the system becomes ready for simultaneous broadcasting. Claim 1
Broadcasting method of the household simple telephone exchange device described.