JPH0260349A - Telephone system - Google Patents

Abstract

PURPOSE:To attain the action conformation of a main device even when a telephone set is not connected by building in a round speaking calling device in a main device having a simplified exchanging function to switch a line wire call and an extension call while plural telephone sets are connected. CONSTITUTION:When a caller speaks and a press-to-talk switch 6 is pushed, this is detected by a push-button detecting circuit 5. By the control of a main control circuit 1, a contact r1 of a channel switching circuit 2 is off, a contact r2 is on and therefore, a microphone 8 is connected to line wires L1 and L2. Consequently, the voice of a speaker is communicated to the opponent. When the switch 6 is not pushed, the calling voice at the opponent side is sent from a speaker 7. In the same way as the line wire call, the extension call with the press-to-talk calling device and a telephone set B and the interphone call with a door phone C are also executed. Thus, by providing a main device A and the press-to-talk calling device, even when the telephone set B is not present, it can be confirmed whether or not the main device A is normally operated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a telephone device with a simple switching function to which a commercially available telephone can be freely connected and to switch between an outside call and an internal call.

[Prior Art] Some conventional telephone devices are equipped with a main unit equipped with a simple switching function for switching between external and internal calls, and are capable of freely connecting commercially available telephones. And, - Roga,
The operation of this telephone device could not be confirmed without at least one telephone. For this reason, Lord! It is hoped that the device will have built-in telephone 8% capability. but,
If a communication device including a handset or the like is provided in the main unit ti, Wt, there is a problem that the main unit becomes large, the construction becomes difficult, and the cost also increases.

[Problem to be Solved by the Invention 1] The present invention has been made in view of the above-mentioned points, and its purpose is to make it possible to check the operation using only the main device, and to provide a large-sized device. The first objective is to provide a telephone device that is inexpensive.

[Means for Solving the Problems J] In order to achieve the above object, the present invention provides a loudspeaker telephone system for a main device to which a plurality of commercially available telephones are connected and which has a simple switching function for switching between external calls and internal calls. It has built-in.

(Function) By providing the loudspeaker 9&: position on the main device as described above, the present invention makes it possible to check the operation of the main device using the loudspeaker even when a telephone is not connected. This is what I did.

(Example 1) An embodiment of the present invention is shown in FIGS. 1 to 3.

In the telephone device of this embodiment, as shown in FIG.
A plurality of commercially available telephones fiB or door phones C are connected. Although it is omitted in Figure 1, a telephone outlet (1) is actually provided between the earthenware stand and the telephone fiB (see Figure vJ7). This telephone outlet ) D is connected to the main device fiA by an extension line and a control line, and the telephone fi
By connecting the modular jack of B, a commercially available telephone fiB is connected to the earthenware fffA, and the main device A
It is equipped with a speaker 20 that emits a notification sound such as a ringing tone from the door intercom C transmitted via a control line, and a display 21 that displays whether an outside line call is in progress or an extension call is in progress.

The main device A has an incoming call detection circuit 4 that detects an incoming outside line call, a hold circuit 3 that sets the outside line #i I-+, L=2 to a hold state and sends out a hold melody, and a call detection circuit 4 that detects an incoming outside line call. A call path switching circuit 2 that switches between extension calls between the connected telephones fiB and intercom calls with the door phone C.
The main control circuit 1 controls the operation of each of the circuits described above, and a power supply circuit 10 supplies power to each section. By the way, in this embodiment, a loudspeaker telephone device is built into the earthenware stand so that the operation can be checked without the telephone fiB being connected. In this embodiment, a breathtalk communication device is provided as the loudspeaker communication device. This BreathTalk communication device includes a BreathTalk switch 6 for the caller to switch the communication path, a push button detection circuit 5 for detecting the operating state of the BreathTalk switch 6, and a speaker 7 and a microphone for BreathTalk communication. 8, and amplifiers 9a and 9b for amplifying the breath talk signal. Note that switching for the breath talk call is performed by switching the call path switching circuit 2 by the main control circuit 1.

A case where an outside line call is made using the BreathTalk telephone device will be explained. Assuming that the breath talk switch 6 is not pressed now, the contact r of the communication path switching circuit 2 is turned on under the control of the main control circuit 1 as shown in FIG. A communication path is formed that connects 7 to outside #i I-+ and L-2.

Therefore, the other party's call tone is transmitted from the speaker 7.

When the caller wants to speak, he or she presses the breath talk switch 6 as shown in FIG. 2(a). Pressing of the breath talk switch 6 is detected by the push button detection circuit 5, and under the control of the main control circuit 1, the contact r1 of the communication path switching circuit 2 is turned off as shown in FIG. 2 (1). Since r2 is turned on as shown in the same figure (c), the microphone 8 is
1IT-1, connected to L2. Therefore, the voice of the caller is transmitted to the other party. In addition, in the same way as an outside line call, an extension call between the BreathTalk communication device and telephone set B, and an intercom call between the door phone C and the like can also be made. In this way, by providing the main device A with the BreathTalk communication device, it is possible to check whether the main device A operates normally even in the absence of the telephone fiB.

In addition, although it has a built-in BreathTalk communication device, the communication path can be switched using the communication path switching circuit 2 provided in the main device A, and the speaker 7 can also be used to simultaneously ring when an outside call is received. In order to do this, the speaker installed in the earthenware stand A can be used also for BreathTalk calls.
The cost of the amplifier is reduced, the number of additional parts is also reduced, and the main device A does not become large.

Therefore, construction can be facilitated by easily attaching the main device A to a wall surface using a mounting frame 15 for mounting the main device A by embedding a ready-made wiring device in the wall surface or the like. The third figure shows the state in which the main device A is attached to a mounting frame in which three ready-made wiring devices are installed in a row.
As shown in the figure.

The control blog of the main device A is illustrated in FIG. 4. In other words, main device A initializes the I10 memory and interrupt timer when starting operation, performs 7-turn on/off processing for telephone B, processes to send dials input from telephone fiB, and receives an outside line. In addition to performing input processing such as processing for detecting that a call has been made and processing for calling a doorbell, connection control is performed by the above-mentioned communication path switching circuit 2 to switch the communication path, and telephone outlet 15
It performs output processing such as controlling the sending of notification sounds to the telephone outlet 15 and controlling the display of the telephone outlet 15.

(Example 2) Other embodiments of the present invention are shown in FIGS. 4 to 6.

In this embodiment, the main device RA is equipped with a hand 7-receiver communication device in place of the press-receiver communication device in the first embodiment, and therefore the breath talk switch 6 and push button detection circuit 5 are Instead, a call volume detection circuit 11 is provided which detects which of the call volume input from the outside line line L2 and the call volume output from the microphone 8 is louder.
Main control circuit 1 according to the output of this call volume detection circuit 11
This embodiment differs from the first embodiment in that the communication path switching circuit 2 is switched.

For example, when making an outside line call using a hands-free telephone device, if the call volume on the call line 12 from outside #i[,,,,L,2 to speaker 7 is above a certain level, and when outside #i1. ．． ．． I4. If the volume of the call on the call line 13 is below a certain level, the main control circuit 1 turns on the contact r1 of the call path switching circuit 2 and turns off the contact r2. In the opposite case, contact ``1'' is turned off and contact ``r2'' is turned on. Then, the above switching state is maintained for a certain period of time after the switching operation of the communication path switching circuit 2 is performed. The operation 70- of this embodiment is shown in FIG.
The call volume detection circuit 11 is designed to detect the call volume transmitted from the telephone fiB and the door phone C so that an intercom call can be made between the two.

(Example 3) Still other embodiments of the present invention are shown in FIGS. 7 and 8.

In this embodiment, a main device A equipped with a hand 7 U-talking device E is provided with a hands-free call button 19, a hold button 16, a door phone call button 17, and an extension call button 18. The main device A side allows you to select between calls using FitE and normal phone fiB, call someone on phone B or doorbell C from main device A when making an extension call or intercom call, and hold calls on the main device A side. It is designed to be easy to operate and highly convenient. By providing the various buttons 16 to 19 in this manner, the main device A is provided with a push button detection circuit 14 that detects the operating state of each of the buttons 16 to 19, and the main control circuit 1 is configured to perform various operations according to the output of the push button detection circuit 14. Performs operation control. In addition, since it is equipped with a hand 7 re-call button 19 for making a call using the hands-free telephone device ffE, when this hand 7 re-1 call button 19 is pressed, the hand 7 re-1 call device E is not connected to the outside #1l-. 1, the state connected to L2 is maintained. For this reason, a communication circuit 23 is provided in the hand 7 communication device E itself, and detects which is louder: the voice volume sent from the outside #i L, , L2, or the voice volume transmitted from the microphone 8. The connection between the external #iL, L2, the speaker 7, and the microphone 8 is controlled.

[Effects of the Invention 1] As described above, the present invention has a built-in loudspeaker telephone device in the main device to which a plurality of commercially available telephones are connected and has a simple switching function for switching between external calls and internal calls. This has the advantage that the operation of the main device can be checked using the loudspeaker even when the telephone is not connected. In addition, since the configuration of the loudspeaker communication device can be used in combination with the configuration conventionally provided in the main device, the device does not become large and the increase in cost can be minimized.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of the main device according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of the operation of the same, Fig. 3 is a plan view of the same as the above attached to a mounting frame, and Fig. 4 is a diagram of the main device. An explanatory diagram showing a control program, FIG. 5 is a circuit diagram of the main device of another embodiment, FIG. 6 is a flow chart showing the same operation as above, FIG. 7 is a circuit diagram of still another embodiment, and FIG. 8 is a circuit diagram of the main device of another embodiment. It is an external view same as the above. A is a main device, B is a telephone, 1 is a main control circuit, 2 is a communication path switching circuit, 7 is a speaker, 8 is a microphone, 6 is a breath talk switch, and 5 is a push button detection circuit. Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Claims] (1) A telephone device characterized in that a plurality of commercially available telephones are connected and a main device has a built-in loudspeaker device and has a simple switching function for switching between external and internal calls.