JP2714819B2 - Telephone switching equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a simple telephone exchange device to which a telephone line, a general-purpose telephone and an intercom are connected, and which performs exchange connection between the telephone and the telephone line or intercom. ,
Regarding the main device.

<Prior Art> FIG. 3 is a diagram showing a connection state of a conventional telephone exchange device used for a house or the like. In FIG. 3, 1 is a telephone line, 2 is a door phone, 15 is a telephone exchange device, and 4 is a telephone exchange device. It is an answering machine.

In the conventional telephone exchange 15, when there is an incoming call from the telephone line 1, a call signal shown in FIG. 4A is given to the answering machine 4, and when there is an incoming call from the intercom 2,
The ringing signal shown in FIG. 6B is provided to the answering machine 4, and therefore, the answering machine 4 outputs a different ringing tone in response to an incoming call from the telephone line 1 or the door phone 2. .

In such a telephone exchange system, if the answering machine 4 is set to the answering mode in order to answer the answering, the answering machine 4 is set not only when there is an incoming call from the telephone line 1 but also when the intercom 2
When an incoming call is received from the telephone, the above-mentioned calling signal is output from the telephone exchange device 15 to the answering machine 4 and the answering machine 15 automatically answers, and the absence from a tape or the like recorded in advance. Will be sent.

However, there is a problem that it is not preferable to always send a message indicating that the user is absent in response to an incoming call from the door phone 2 when the user is absent from the viewpoint of security.

<Object of the Invention> The present invention has been made in view of the above points,
It is an object of the present invention to provide a telephone exchange device that enables a user to select whether an answering machine responds to an incoming call from a door phone.

<Constitution of the Invention> In the present invention, in order to achieve the above object, a telephone line, a telephone, and a door phone are connected, and a corresponding call signal is output to the telephone in response to an incoming call from the telephone line and the door phone. Telephone exchange equipment
A main operation unit operated to select whether to output the call signal corresponding to an incoming call from the door phone to the telephone, and the main operation unit stops outputting the call signal corresponding to the incoming call from the door phone During the period
A sub-operation unit operated to select whether or not to output the call signal corresponding to an incoming call from the intercom to the telephone; and an incoming call from the intercom based on operations of the main operation unit and the sub-operation unit. Control means for controlling whether or not to output the calling signal to the telephone according to

According to the above configuration, it is possible to select whether or not to output a call signal to the telephone in response to an incoming call from the intercom by the main operation unit. Therefore, when the answering machine is set to the answering machine in the absence state, the incoming call from the intercom can be selected. May not be automatically answered.

The sub-operation unit determines whether to output a call signal corresponding to an incoming call from the intercom to the telephone during a period in which the output of the call signal corresponding to the incoming call from the intercom is stopped based on the operation of the main operation unit. Can be selected based on the operation described above, so that the on / off control of the automatic response in the absence mode can be more finely controlled.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention, in which 1 is a telephone line, 2 is a door phone, 3 is a telephone exchange according to the present invention, and 4 is a general-purpose answering machine.

The telephone exchange device 3 is a so-called main unit, which is a simple telephone exchange device for performing exchange connection between the answering machine 4 and the telephone line 1 or the door phone 2, similarly to the conventional telephone exchange device. When an incoming call is received from the telephone, a corresponding calling signal is output to the answering machine 4 as in the conventional example.

The telephone exchange apparatus 3 of this embodiment is configured as follows so that it is possible to select whether or not to output a call signal to the answering machine 4 for an incoming call from the door phone 2.

That is, the telephone exchange device 3 includes two switches 5 and 6 as operation units operated to select whether or not to output a calling signal corresponding to an incoming call from the door phone 2 to the answering machine 4. A central control circuit (control means) for controlling whether or not to output a calling signal from the calling signal generating circuit 7 to the answering machine 4 in response to an incoming call from the door phone 2 based on the operation of the switches 5 and 6 CPU) 8.

One of the two switches 5 and 6 is a home / absence switch 5 that is operated depending on whether the user is at home or an absence, and the other is an incoming call from the door phone 2 regardless of whether the user is at home / absence. Is an intercom automatic answering switch 6 that is operated when the answering machine 4 is to output a calling signal to the answering machine 4. Each of the switches 5 and 6 is connected in series to a mode input terminal 8 a of the central control circuit 8.

In this embodiment, the main operation unit is configured by the door phone automatic answering switch 6, and the sub-operation unit is configured by the home / absence switch 5.

The home / absence switch 5 is turned off when the user is at home, and is turned on when leaving the home. In addition, the door phone automatic answering switch 6 can be set to
It is operated when the answering machine 4 is to output a call signal corresponding to an incoming call from the door phone 2 and is turned off.

Therefore, when the intercom automatic answering switch 6 is operated, the mode input terminal 8a of the central control circuit 8 becomes high level regardless of whether the user is at home or not. further,
When the intercom automatic answering switch 6 is not operated and the home / answering switch 5 is in the off state (home mode), the mode input terminal 8a of the central control circuit 8
High level. When the mode input terminal 8a is at a high level, a calling signal corresponding to an incoming call from the door phone 2 is output to the answering machine 4 as described later.

The call signal from the call signal generation circuit 7 is given to the changeover relay switch 9 and the central control circuit 8
Is to control the relay drive transistor 10 for driving the switching relay switch 9 based on the input from the mode input terminal 8a to output a calling signal to the answering machine 4 when an incoming call is received from the door phone 2. Control.

The central control circuit 8 determines whether the mode input terminal 8a is at a high level when an incoming call from the door phone 2 is received, that is, when the door phone automatic response switch 6 is operated to be turned off, or when the door phone automatic response is performed. When the switch 6 is not operated and the at-home / answering switch 5 is off (at-home mode), a low-level control signal is supplied from the control terminal 8b to the relay drive transistor 10. As a result, the switching relay switch 9 returns to the ringing signal generation circuit 7 side, and the ringing signal is output to the answering machine 4.

When there is an incoming call from the door phone 2, when the mode input terminal 8a is at a low level, that is, when the door phone automatic answering switch 6 is not operated and the home / answering switch 5 is turned on (answering). Mode), a high-level control signal is applied to the relay drive transistor 10 from the control terminal 8b. At this time, the switching relay switch 9 does not return to the ringing signal generation circuit 7 side, and the ringing signal is not output to the answering machine 4. The central control circuit 8 normally outputs a high-level control signal from the control terminal 8b.

By operating the two switches 5 and 6 in this way, a call signal is sent to the answering machine 4 in response to an incoming call from the door phone 2.
Can be selected, for example, when the answering machine 4 is set to the answering mode to answer the message, the home / answering switch 5 of the telephone exchange 3
Is turned on (answering mode), a call signal is not output to the answering machine 4 in response to an incoming call from the door phone 2, so that the answering machine 4 automatically answers the No message indicating absence is sent.

Also, when the answering machine 4 is to automatically answer an incoming call from the intercom 2 even when the user is in the absence mode, the intercom automatic answering switch 6 may be operated to be turned off.

FIG. 2 is a flowchart corresponding to the above operation. In step n1, it is determined whether or not the intercom button is pressed, that is, whether or not there is an incoming call from the intercom 2, and if it is determined that there is an incoming call, step n1 is performed.
The process proceeds to n2, and it is determined whether or not the mode input terminal 8a is at a low level. If it is determined that the mode input terminal 8a is at a low level, the process proceeds to step n3. To

If it is determined in step n2 that the mode input terminal 8a is not at the low level, the process proceeds to step n4, where the control signal is set to the low level and the calling signal is output to the answering machine 4.

In the above embodiment, the two switches, the home / absence switch 5 and the intercom automatic answering switch 6, are provided. However, as another embodiment of the present invention, one switch may be used.

<Effects of the Invention> As described above, according to the present invention, it is possible to select whether or not to output a call signal to a telephone in response to an incoming call from a door phone based on the operation of the main operation unit.
For example, when the answering machine is connected and the answering machine is set to the answering mode, it is possible to prevent the answering machine from automatically answering an incoming call from the door phone.

The sub-operation unit determines whether to output a call signal corresponding to an incoming call from the intercom to the telephone during a period in which the output of the call signal corresponding to the incoming call from the intercom is stopped based on the operation of the main operation unit. Can be selected based on the above operation, so that the on / off control of the automatic response in the absence mode can be more finely controlled.

Therefore, for example, when it is desired to automatically perform an absence response to the door phone irrespective of the state of being at home or absence, the main operation unit outputs a call signal corresponding to an incoming call from the door phone to the telephone. May be selected. On the other hand, when it is desired to manually switch the answering machine to the door phone one by one manually, the output of the call signal corresponding to the incoming call from the door phone is stopped based on the operation of the main operation unit, and the incoming call from the door phone is handled. The sub-operation unit may select whether to output a calling signal to the telephone. As described above, according to the present invention, it is possible to more finely control the absence response to the door phone without complicating the operation,
The operability of the answering machine has been further improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
3 is a diagram showing a connection state of a conventional example, and FIG. 4 is a diagram showing a call signal. 1 ... telephone line, 2 ... door phone, 3 ... telephone exchange device, 4 ... answering machine, 5 ... home / answer switch,
6 Door phone automatic answering switch, 8 Central control circuit.

Claims (1)

(57) [Claims] 1. A telephone exchange device to which a telephone line, a telephone and a door phone are connected, and a corresponding call signal is output to said telephone in response to an incoming call from said telephone line and said door phone. A main operation unit operated to select whether or not to output the call signal to the telephone; and a door phone during a period in which the main operation unit stops outputting the call signal corresponding to an incoming call from the door phone. A sub-operation unit operated to select whether or not to output the call signal corresponding to the incoming call from the telephone, based on the operation of the main operation unit and the sub-operation unit, Control means for controlling whether or not to output the calling signal to the telephone in response to the call.