JPS62196962A - Voice calling telephone system - Google Patents

Abstract

PURPOSE:To omit the telephone contact members at power stations, substations or various construction sites and to attain the smooth relay of telephones, by connecting a line wire to the telephone set responding to the simultaneous calling. CONSTITUTION:When a controller 3 detects an incoming call from an line wire 4 and the answer is given to this call for a prescribed period of time, the line wire 4 is connected to a voice amplifier 13 to attain the direct voice simultaneous calling through the line wire 4. Then the line wire 4 is connected to the telephone that answered to said general calling through a circuit. Thus it is possible to call smoothly the called subscribers scattered in a wide range of a construction site even though a contact member is not always resident at a telephone set (master telephone set) connected to the line wire 4. This attains the effective relay of telephones with those called subscribers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a voice call telephone device suitable for installation in power generation and substations, factories, construction sites, etc.

[Conventional technology]

In power plants, substations, factories, and various construction sites, the work locations are often dispersed over a wide area.

Therefore, in the above-mentioned power plants, substations, factories, construction sites, etc., a telephone with an outside line connection is usually installed at the site office, etc., which is the base, and it is necessary to connect the site office and the work site. A private telephone system has been installed in the area. In addition, speaker systems for simultaneous calling are installed at various locations at the work site.

When a call is received from the telephone installed in the above-mentioned field office, after answering the call, the called person working at the work site will be contacted via the above-mentioned local telephone system or speaker system. is calling. With this call, the called party is invited to the field office, or the telephone call at the work site is connected to an outside line after receiving a response from the called party via the local telephone system, and the telephone contact is established. It is now possible to

[Problem that the invention seeks to solve]

However, in order to answer incoming calls from outside lines using the telephone installed in the field office, it is necessary for a contact person to be on standby at the field office at all times. Moreover, each time a contact person responds to an incoming call from an outside line, it is necessary to activate the local telephone system or speaker system to call the called party.

Therefore, there was a problem in that it was difficult to make smooth telephone calls.

The present invention has been developed in consideration of these circumstances, and its purpose is to effectively make telephone calls to widely dispersed work sites and to smoothly carry out telephone calls. An object of the present invention is to provide a voice telephone calling device.

[Storm means to solve problems]

The present invention is a telephone device comprising a master telephone connected to an outside line, slave telephones connected to the master telephone and distributed over a wide range of work areas, and a speaker system for simultaneous ringing, comprising: When the main phone does not respond to an incoming call from an outside line for a predetermined period of time, for example, after automatically responding by voice to the above-mentioned outside line that all calls can be made from outside lines, A circuit is connected to the simultaneous paging circuit of the speaker system so that the simultaneous paging can be performed directly from an external line, and the external line is connected to a telephone that responds to the general paging. .

[Action of the invention]

Thus, according to the present invention, when an incoming call from an outside line is not received for a predetermined period of time, the outside line circuit is connected to the paging circuit of the speaker system, so that the paging can be performed directly from the outside line. becomes possible. The outside line is then connected to the telephone that answered the call.

Therefore, even if a telephone connected to an outside line (main telephone) is not always on standby, called parties scattered over a wide range of work sites can be smoothly called and telephone contact can be made effectively. It becomes possible to realize this.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall schematic diagram of a voice call telephone device according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of the configuration of a control device thereof. Further, FIG. 3 is a diagram showing an example of the operation sequence of the control device.

A telephone system installed at power plants, substations, or various construction sites consists of a master telephone 1 connected to an outside line, and a plurality of slave telephones 2a, 2b, . . . connected to the master telephone 1.
It consists of 2n. The main telephone 1 installed in a field office or the like is actually connected to an outside line 4 via its control device 3. Further, each of the slave telephones 2a, 2b, to 2n is placed at various locations in a work site that is widely dispersed.
Each of them is connected to a local telephone network 5 via the control device 3 described above. Further, the speakers θa, 8b, to 8n are connected to the local telephone network 5 and placed at various locations at the work site, and are used for calling all called parties by voice.

Note that 7 in the figure is a junction box connected to the local telephone line network 5. Additional child telephones and mobile telephones 8 are connected to this junction box 7.

As shown in FIG. 2, the control device 3 formed by connecting the main telephone 1 to the outside line 4 includes a line interface 11 connected to the outside line 4, and a control unit 12 for controlling telephone exchange.
, an audio amplifier 13 for driving the speaker 6, a telephone interface 14 for transmitting and receiving telephone exchange control signals between the master telephone 1 and slave telephone 2 and the control section 12.
15 etc.

1B is an incoming call detection circuit from the outside line 4; 7 is a DC loop opening circuit; 18 is a chime circuit; 19 is a voice response circuit; and 20 is a pulse relay circuit. each connected.

The control device 3 having such a configuration allows calls between the outside line 4 and the main telephone 1 or the slave telephone 2, and the communication between the main telephone 1 and the slave telephone 2.
and the slave telephone 2, and calls between the plurality of slave telephones 2 are respectively controlled. Further, a chime is sounded by the speaker 6 and a simultaneous call is made by voice.

The feature of this device is that when the control device 3 detects an incoming call from an outside line and no response is received for a predetermined period of time, the outside line 4 is connected to the audio amplifier 13 and the outside line is connected to the outside line. The point is that it has made it possible to make direct simultaneous voice calls from. When there is a response to the simultaneous call, the outside line 4 is connected to the telephone that responded.

This control operation will be explained with reference to FIG. 3. When the incoming call detection circuit IB detects an incoming call from an outside line (step a), the control section 12 first detects a response from the base telephone 1 in response to the incoming call from the outside line (step a). Determine whether or not it is done (step b
). If there is no response, it is determined whether the period has continued for a predetermined time Tl, for example, 3 seconds or more (step C).

Here, in response to the above call, the main phone
When there is a response from the external line 4, a connection circuit is formed by the DC loop closing circuit I7, and the main phone 1
The line is connected to (step d). As a result, the person responding from the main telephone 1 makes a call to the outside line 4, puts the line on hold if necessary, and calls the called parties all at once via the speaker 6. Then, the holding line is connected to the child telephone 2 that responded to the call. As a result, a conversation is made between the outside line 4 and the called party who answered the slave telephone 2.

On the other hand, in response to an incoming call from the outside line 4, the predetermined time 1
If there is no response from the base phone 1 within 1, the control unit 13
sets the voice call mode (step e).

This voice call mode is, for example, the chime circuit 18
At this time, a chime is sounded through the speaker 6 to notify that there is an incoming call from the outside line 4.

At the same time, the voice response circuit 19 is activated to automatically respond to the outside line 4 by voice. This voice response is performed by, for example, outputting a message prerecorded on a tape recorder or the like, or by synthesizing and outputting a predetermined message into voice.

Specifically, "This is XX.The operator is not available at the moment.
I will connect this phone to the speaker, so you can call the other party directly. It consists of voice messages such as "Here you go." After such a voice response, a predetermined period T2
The outside line 4 is connected to the audio amplifier 13 throughout.

The caller from the outside line 4 receives this voice response and directly calls the called party, and the voice is transmitted to the speaker B.
is output from. In other words, a voice call is made directly from outside lines (step f).

When a voice call is made from the outside line 4 in this manner, the outside line 4 is put on hold, and the incoming call response is detected again (step g).

This incoming call response detection is performed while determining whether or not the incoming call response is received from the parent telephone I or slave telephone 2 within a predetermined time T3, for example 15 seconds (step h).

When there is a response to the general call, the telephone from which the response was received is identified (step i), and the outside line 4 is connected to that telephone (step j). As a result, a telephone conversation can be made between the outside line 4 and the called party without using a communication device.

Incidentally, if there is no response to the general call within the predetermined time T3, the outside line 4 is connected to the voice response circuit 19 again. Then, the voice response circuit 19 outputs a message such as ``We cannot contact the person in question, so please call again.'' Step k), and the call is terminated.

As described above, according to the present device, when an incoming call from an outside line cannot be answered promptly, an automatic response is made to the call, thereby making it possible to directly call all outside lines. Then, an outside line is automatically connected to the telephone that answers the simultaneous call. Therefore, it becomes possible to carry out telephone calls very smoothly, even if it is an outside line. Further, effects such as no need for a dedicated communication device or the like can be achieved. This has a great practical effect, especially when it is unclear which work site the called party is going to.

Note that the present invention is not limited to the embodiments described above. Here, when there is no response to an incoming call from an external line, the external line is connected to the simultaneous ringing circuit and a simultaneous ringing is performed by voice.
Alternatively, when a call is made from the child telephone 2, that is, an extension telephone, that telephone may be connected to a paging circuit, and the line may be connected to a telephone that responds to the paging. In this case, since it is clear that a simultaneous call will be made, for example, the operation of the special number dial may be detected and the processing from step e shown in FIG. 3 described above may be performed. It is also possible to issue a voice warning when a security system is activated, for example, by making use of the line connection function with an external line paging circuit.

In addition, the present invention can be implemented with various modifications without departing from the gist thereof.1. It can be applied as a telephone device at various work sites.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to achieve great effects such as eliminating the need for telephone contact personnel at power generation and substations and various construction sites, and smoothing out telephone calls.

[Brief explanation of drawings]

FIG. 1 is an overall schematic configuration diagram of a voice call telephone device according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the configuration of its control device, and FIG. 3 is an example of an operation sequence of the control device. FIG. l...Main telephone, 2...Slave telephone, 3...Control device, 4...External line, 5...Internal telephone line network, 6...
Speaker, 7... Junction box, 8...
Mobile telephone, 11... line interface, 12
...Control unit, 13...Audio amplifier, 14.15...
・Telephone interface, 16... incoming call detection circuit,
17... DC loop closing circuit, 18... Chime circuit, 19... Voice response circuit. Applicant's representative Patent attorney Takehiko Suzue Figure 1. 2o 1 Figure 3

Claims (2)

[Claims] (1) A master telephone connected to an outside line, slave telephones connected to the base telephone and distributed at multiple locations, and a speaker system for simultaneous ringing; When there is no response to an incoming call from an outside line, the outside line circuit is connected to the simultaneous paging circuit of the speaker system, and the outside line circuit is connected to the telephone that responds to the simultaneous ringing. Device. (2) The voice call telephone according to claim 1, wherein the means for connecting the outside line circuit to the simultaneous paging circuit is performed after a voice response is made to the outside line indicating that simultaneous calling from the outside line is possible. Device.