JPH04192955A - Householed simple telephone exchange - Google Patents

Abstract

PURPOSE:To transmit a desired holding tone in the case of holding by building a holding tone transmission circuit in the telephone exchange, providing a terminal to input the holding tone from an external sound source and further providing a switching means to select the holding tone. CONSTITUTION:In a telephone exchange A, an external input terminal 22 is provided to input a melody tone from an external sound source 23, and the inside of the exchange A is equipped with a holding tone transmission circuit 9 and a switch SW1 to select any one of the sound source 23 is transmitted as the holding tone. When a signal corresponding to holding is inputted from a telephone set, an extension l2 is disconnected from a line wire l1 by a switch SW2 and the line wire l1 is turned to a holding state. Then, either the circuit 9 or the sound source 23 selected by the switch SW1 is connected to the line wire l1. Thus, the desired holding tone can be transmitted.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a simple telephone exchange for home use that enables external and internal telephone calls by switching and forming communication paths between external lines and internal lines or between internal lines. It is related to the device.

[Conventional technology]

The system configuration of this type of home-use simple communication device is explained in the fifth section.
As shown in the figure. This simple telephone switching device for home use is connected to a telephone exchange A which is connected to a telephone office E via an outside line 1 via a disconnector G and a protector H, and is connected to this telephone exchange A by an internal line 1111 and a control line 1111, respectively. It consists of a plurality of telephone outlets B to which commercially available telephones C are removably connected, and an outside line is connected to the above telephone exchange! ! , and extension 12 or extension!
, by switching and forming communication paths between the two, so that telephone C connected to telephone outlet B can be used to make outside calls and internal calls. 'In addition, in this home simple telephone exchange device, the telephone line 14 connects the doorbell D to the telephone exchange A.
It is also possible to make door intercom calls using 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. This telephone outlet B also has a speaker SP for reproducing notification signals such as an extension ring tone or a door phone ring signal sent via the control line β, and this control line ! , a light-emitting display section La that displays whether an internal call is in progress or an outside call is in progress by discriminating a display signal that is a voltage signal sent through the
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 ■S.

[Invention or problem to be solved]

By the way, in the conventional simple telephone switching equipment for home use of this type, a holding tone sending circuit for sending out holding tone when a call is placed on hold is built into the telephone exchange.

However, most of the hold music sent out by the hold music sending circuit built into telephone exchange A is a repeating monotonous melody, which may not suit the user's tastes, and may not suit the user's taste. Even if it does not suit the user's needs, it is not possible to easily change the hold tone in conventional home simple telephone switching devices.

The present invention has been made in view of the above-mentioned points, and its object is to provide a simple telephone switching device for home use that can send out a desired holding tone when the user is on hold.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a telephone exchange or a built-in hold music sending circuit for sending hold music when on hold, and an external input terminal for inputting hold music from an external sound source.
The apparatus includes switching means for selecting whether to send out the held music by either the held music sending circuit or an external sound source.

[Effect]

By having the above-described configuration, the present invention allows a favorite melody to be input from an external sound source and used as a hold tone to be sent out when the music is put on hold.

〔Example〕

An embodiment of the present invention is shown in FIGS. 1 to 4.

First, the configuration of the telephone exchange will be briefly explained along with its operation. As shown in FIG. 2, the telephone exchange A has relay contacts r1 to r, for each extension p2 connected to the telephone outlet B.
are provided, and these relay contacts r1 to r3 disconnect and disconnect the extension line P and the outside line L, and the extension line L or the outside line I! ,
The communication current for extension calls or doorphone calls in a state of being disconnected from the communication current supply circuit 4. ~4. It should be supplied from In addition, the above-mentioned relay contact r,
~r is normally switched to the side that separates the extension line l from the outside line f, and is switched to the outside line l when an outside line call is received.

Now, suppose that an incoming external call is detected by the incoming call detection circuit 5.
Control circuit 11 composed of CPU or relay contacts r, ~r
2 outside line! , do the control to switch to the outside line! , sends an outside line incoming signal sent through , to telephone C, and rings a built-in ringer or the like of telephone C to make an outside line call. When the receiver of telephone C is picked up in response to this call, an outside call can be made. By the way, the above relay contact r
, ~r, on the telephone outlet B side are hook/DP detection circuits 2, ~2. It is designed to detect the dial signal based on the dial pulse (DP) signal input from telephone C and the hook state of telephone C. As mentioned above, if telephone C goes off-hook when an outside call is received, receives the output of the hook/DP detection circuit 2 corresponding to the telephone C, and the control circuit 11 determines that an outside line call is in progress, and in this case, the display control circuit 18 sends the control line I! 3, a display signal is sent to each telephone 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. In addition, an amplifier AMP is inserted into the transmission path of the above-mentioned display signal and a notification sound signal to be described later to amplify the signal.When making an outside call from telephone C, lift the handset and dial. In the following explanation, we will explain the case where you have a telephone line contract or a dial pulse line.The off-hook state of the above-mentioned telephone C is detected by the hook/DP detection circuit 2, and at this time, the control circuit 11 is activated by the signal tone generation circuit. 20 and sends a pseudo dial tone similar to the dial tone (two tone) sent from the telephone office to telephone C through the extension I!t.The hook/DP detection circuit 2 sends out this pseudo dial tone. The process is stopped when the first dial signal is detected.By the way, in this type of home simple telephone switching equipment, call processing such as calling an extension is performed by inputting a specific dial signal from telephone C. Therefore, even if a dial operation is performed on telephone C,
This does not necessarily mean that the call is an outside line call, but may be a call process such as an extension call. Therefore, the control circuit 11 that received the dial signal
starts an outside call operation only when the number of digits of the dial signal exceeds the number of digits of the dial signal assigned for call processing (two digits in this embodiment). This external line transmission drives the DP sending circuit 6 and connects the diode bridge D.
This is done by sending a DP double signal to the outside line l through B.

When the other party answers in response to this outside line call, the outside line 11
Since the polarity of is reversed, this polarity reversal is detected by the polarity reversal detection circuit ]6, and then the outside line! ! , and the extension f connected to the telephone C that made the outside call, the relay contact r is switched to enable an outside call. In addition,
At this time, the display control circuit 18 also controls the telephone outlet B.
to display an outside 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, such as a busy tone, sent through the outside line L is detected by the outside line dial tone detection circuit 8, and at that time, the signal tone generating circuit 20 sends the telephone C that made the outside line call to the extension line 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. Note that the control circuit 11 determines whether the call is an extension call from the number of digits in the dial signal, and in this case drives the notification sound generation circuit 17 to call the telephone through the control line l corresponding to the telephone C of the called party. A notification tone signal is sent to outlet B, and an extension ring tone is sounded from speaker SP 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 crosspoint switch 10 to control the telephone C on the calling side.
Extension 1 corresponding to . and the extension corresponding to the called party's phone C! ! 2. Which connection is made to enable extension calls?

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

Incidentally, although the above-mentioned extension call is made to a specific telephone C, if 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, Upon receiving 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 12 corresponding to the telephone C of the calling party, thereby enabling an extension call. shall be.

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 the telephone line contract is a button line, the PB receiver 12.13 detects a dial signal based on the PB double signal from the button type telephone C, and the DC connection circuit 3 closes the line. After doing this, make an outside line 1. from PB dialer 7. It operates in the same way as a dial pulse line, except that a dial signal is sent to the dial pulse line.

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 E2 of the telephone C that answered with the switch S2. Connection is made by turning on any one of S2 and switching the cross point switch 10, and a doorphone call is made possible.

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

The characteristic configuration of this embodiment will be described below. In the home simple telephone exchange device of this embodiment, as shown in FIG.
2 is provided in the telephone exchange, and a switch SW is provided inside the telephone exchange as a switching means for selecting which of the hold tone sending circuit 9 and an external sound source is used to send out the hold tone. Here, as the external input terminal 22, for example, an RCA pin jack or a stereo mini jack may be used (this is so that a tape deck or the like as an external sound source can be easily connected. Depending on the location, the external connection terminal 22 may be connected as shown in Figure 4.
You may also be able to set it at a remote location.

In this embodiment, when a dial signal corresponding to a hold is input from telephone C, control circuit 11 switches relay contact r to disconnect extension line 12 from outside line l in response to this dial signal. At the same time, the DC connection circuit 3 performs DC connection to place the outside line 11 in a hold state. Therefore, at this time, either the held music sending circuit 9 selected by the switch SW1 or the external sound source will be connected to the outside line 11, and if the external sound source is selected, the desired melody sound will be output. You can also send it as a hold music. Note that the function of the switch means SW2 in the schematic configuration diagram of the main parts shown in FIG. 1 is performed by the relay contact r and the DC closing circuit 3.

〔Effect of the invention〕

As described above, in the present invention, a telephone exchange has a built-in music-on-hold sending circuit that sends out music on hold when the music is on hold, and an external input terminal that inputs music on hold from an external sound source. Since the apparatus is provided with a switching means for selecting which one to send out the hold tone, it is possible to input a favorite melody from an external sound source and set it as the hold tone to be sent out when the hold tone is put on hold.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the main configuration of an embodiment of the present invention, Fig. 2 is a circuit diagram of a telephone exchange equipped with the above functions, and Figs. 3 and 4 are explanatory diagrams of how to install external input terminals. , FIG. 5 is a system configuration diagram of a simple home telephone exchange device. A is a telephone exchange, C is a telephone, l is an outside line, l is an extension line, 9 is a hold music sending circuit, 22 is an external input terminal, and SWI is a switch. Agent Patent Attorney Ishi 1) Chief 7Ill Figure

Claims (1)

[Claims] (1) Consisting of a telephone exchange connected to an outside line, which is a public telephone line, and multiple commercially available telephones connected to this telephone exchange by extensions, the telephone exchange provides a communication path between outside lines and extensions, or between extensions. In a home simple telephone exchange device that enables external and internal calls using the above-mentioned telephone set, the telephone exchange has a built-in hold tone sending circuit that sends hold tone when on hold, and also transmits hold tone from an external sound source. 1. A simple telephone switching device for home use, comprising: an external input terminal for inputting a hold tone, and a switching means for selecting whether to send the hold tone by either a hold tone sending circuit or an external sound source.