JPS6378646A - Telephone controller - Google Patents

Abstract

PURPOSE:To the additional installation of an input terminal and to accurately execute the operation of a specific mode with a simple constitution, by setting a telephone line at a cutoff state for a prescribed time compulsorily, in a state that an information signal representing the cut-off state of the telephone line is supplied to an input terminal. CONSTITUTION:When a flash key F is set at an ON state only for a time t1 shorter than the cut-off time to of the telephone line required for the execution of the operation of the specific mode by an exchange 11, the information signal of L level corresponding to the cut-off state of the telephone line for the same time as the time t1, is supplied to the input terminal (a) of an input circuit 21. In this time, the signal to set a switch 17 at an OFF state is generated for a time equal to the cut-off time to of the telephone line required for the execution of the operation of the specific mode, from the output terminal (b) of an output circuit 25, by a CPU23, and the telephone line is set at the cut-off state for the same period. Also, similarly when the flash key F is set at the ON state only for a time t2 longer than the t0, the signal to set the switch 17 at the OFF state for a time equal to the time t0 is generated from the output terminal (b) of the output circuit 25, and the telephone line is set at the OFF state for the same period.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) The present invention provides a telephone that detects that a telephone line has been interrupted for a predetermined period of time and executes a specific mode of operation. Concerning improvements to control devices.

(Prior Art) As is well known, in a telephone communication system, by performing so-called hooking, in which the telephone line is disconnected by going on-hook for a predetermined period during a call, it is possible to switch to, for example, hold mode or extension transfer mode. Devices that can perform operations in specific modes are becoming widespread.

Additionally, in recent years, push-button type telephones have been introduced to operate the flash key for a predetermined period of time during a call to disconnect the telephone line (so-called flashing), thereby allowing the operation in the specific mode described above to be performed without going on-hook. There are new devices that can do this, and efforts are being made to improve operability.

FIG. 6 shows such a conventional telephone control device. That is, in the figure, reference numeral 11 denotes an exchange, which is connected to a telephone line (not shown), and is also connected to a speech network circuit 18 via connection terminals 12, 13, a rectifier circuit 14, and switches 15 to 17, and a handset 19. Telephone calls can be made via the . Further, this exchange 11 can detect that the telephone line has been interrupted for a predetermined period of time, switch the telephone line to a specific line, and execute operations in a specific mode, such as a hold mode or an extension transfer mode. This is how it is done.

On the other hand, 20 in the figure is a button operation section, and operation signals of each key are supplied to a control section 26 consisting of an input circuit 21, a timer circuit 22, a central processing unit (hereinafter referred to as CPU) 23, a memory 24, and an output circuit 25. For example, it controls the sending operation of dial pulses, etc. That is, regarding the control of the dial pulse sending operation, a signal output from the output terminal of the output circuit 25 is used to control the switch 17, which is normally on, to the off state, and send a break of the dial pulse to the telephone line. That's what I do.

In addition, in FIG. 6, the constant current circuit 21 and the diode D1. A constant voltage circuit 28 consisting of a constant voltage source E generates '11 source power to be supplied to the control section 26.

Here, the switch 15 is linked to a hook switch (not shown), and is controlled to be in the off state in the on-footer state, thereby disconnecting the telephone from the telephone line. When the switch 15 is turned off, it generates an information signal at the input terminal a of the input circuit 21 indicating that the telephone line has been disconnected.

Further, the switch 16 is connected to the button switch key operation section 2.
The telephone line is turned off by an information signal generated when the button of the flash key F provided at 0 is operated, and even in the off-hook state, the telephone line can be disconnected by operating the flash key F. ing. The information signal output by operating this flash key F is also supplied to the input terminal a of the input circuit 21.

Here, when the information signal is supplied to the input terminal a of the input circuit 21, the control section 26 determines that the telephone line is disconnected and performs a predetermined process.

By the way, in the conventional telephone control device shown in FIG.
In order to perform a specific mode of operation, it is necessary to interrupt the telephone line for a predetermined period of time by either hunking or flashing, but in either case, this is done manually by the user; The length of the line,
There is a problem in that it is difficult to match the period required to execute the operation in the specific mode, and malfunctions are likely to occur.

Therefore, at present, as shown in FIG.
A new input terminal C is attached to the input terminal C, and the information signal obtained by operating the flash key F is supplied to this input terminal C. When the information signal is supplied to the input terminal C, the information signal is input during the supply period. Regardless of the operating period of the flash key F, the output terminal of the output circuit 25 generates a signal that turns off the switch 17 for a predetermined period necessary to execute the operation of the specific mode. The idea is to ensure that operations in a specific mode can be executed.

However, in the telephone control device as shown in FIG.
Since it is necessary to add a new input terminal C to the input circuit 21, problems such as a complicated configuration and an economical disadvantage arise.

(Problems to be Solved by the Invention) As described above, in conventional telephone control devices, when operating in a specific mode, malfunctions tend to occur, and when trying to perform operations reliably, the configuration This has the problem of being economically disadvantageous.

Therefore, the present invention has been made in consideration of the above circumstances, and provides an extremely good telephone control device that has a simple configuration, can reliably execute operations in a specific mode, and is economically advantageous. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) That is, the telephone control device according to the present invention includes an exchange that detects that a telephone line is in an interrupted state for a predetermined period and executes an operation in a specific mode. The present invention is directed to a system having an input terminal to which an information signal indicating that the telephone line has been disconnected, and a control means for performing predetermined processing when the information signal is supplied to the input terminal. The control means is further provided with means for forcibly bringing the telephone line into a state of interruption for a predetermined period while the information signal is being supplied to the input terminal.

(Function) According to the above configuration, the telephone line is forcibly interrupted for a predetermined period while the information signal is being supplied to the input terminal, so it is not necessary to add a new input terminal. It is unnecessary, has a simple configuration, can reliably execute the operation in a specific mode, and can be economically advantageous.

(Example) Hereinafter, an actual example of the present invention will be described in detail with reference to the drawings. In FIG. 1, the same parts as in FIG. 6 are shown with the same symbols, and only the different parts will be explained here. That is, the information signal generated by operating the flash key F is supplied to the input terminal a of the input circuit 21 together with the information signal generated when the switch 15 is turned off.

Then, when the information signal is supplied to the input terminal a of the input circuit 21, the control unit 26 automatically controls the input signal even if the supply period does not match the period necessary for executing the operation in the specific mode. Specifically, the output terminal of the output circuit 25 generates a signal that turns off the switch 17 for only the period necessary to execute the operation in the specific mode, and operates to execute the operation in the specific mode. be.

Specifically, for example, at time T1 in FIG.
), it is assumed that the flash key F is turned on for a period t1. In this case, it is assumed that the on-period t1 of the flash key F is shorter than the required period to of the telephone line, which is necessary for the exchange 11 to operate in a specific mode.

Then, as shown in FIG. 2(b), L level information corresponding to the disconnection of the telephone line is sent to the input terminal a of the input circuit 21 for the same period as the operating period t1 of the flash key F. A signal is provided.

At this time, as shown in FIG. 2(C), the CPU 23 outputs the output terminal of the output circuit 25 so that the required period of the telephone line required for executing the operation in the specific mode is
A signal is generated to turn off the switch 17 for a period corresponding to , and the telephone line is disconnected for the same period, as shown in FIG. Therefore, the exchange 11 can reliably perform the operation in the specific mode.

Also, at time T2 in FIG. 2, as shown in FIG. 2(a),
Assume that the flash key F is turned on for a period t2 that is longer than the predetermined period to of the telephone line required to execute the operation of the specific mode. Then, as shown in FIG. 2(b), L level information corresponding to the disconnection of the telephone line is sent to the input terminal a of the input circuit 21 for the same period as the operation period t2 of the flash key F. A signal is provided.

At this time, as shown in FIG. 2(C), the CPU 23 outputs the output terminal of the output circuit 25 so that the required period of the telephone line required for executing the operation in the specific mode is
A signal is generated to turn off the switch 17 for a period corresponding to , and the telephone line is disconnected for the same period, as shown in FIG. Therefore, the exchange 11 can reliably perform the operation in the specific mode.

Therefore, according to the configuration of the above embodiment, when the L level information signal generated by the operation of the flash key F is supplied to the input terminal a conventionally provided in the input circuit 21, the specific mode is activated. The required telephone line duration t to perform the operation.

Since the switch 17 is turned off,
The configuration can be simplified without adding a new input terminal to the input circuit 21, and operation in a specific mode can be executed reliably.

Furthermore, as shown in FIG. 6, the above operation can be achieved even if the switch 16, which is turned off by the information signal generated by operating the flash key F, is provided. In this case, for example, at time T1 in FIG. 3, as shown in FIG.
Assume that only 1 is in the off state. In this case, switch 1
The off period t1 of 5 or 16 is the required period t of the telephone line required for exchange R11 to carry out a particular mode of operation.
.

shall be shorter than

Then, as shown in FIG. 3(b), an L level signal corresponding to the disconnection of the telephone line is applied to the input terminal a of the input circuit 21 for the same period as the off period t1 of the switch 15 or 16. An information signal is provided.

At this time, as shown in FIG. 3(C), the CPU 23 outputs the output terminal of the output circuit 25 so that the required period of the telephone line required for executing the operation in the specific mode is
A signal is generated to turn off the switch 17 for a period corresponding to , and the telephone line is disconnected for the same period, as shown in FIG. Therefore, the exchange 11 can reliably perform the operation in the specific mode.

Also, at time T2 in FIG. 3, as shown in FIG. 3(a),
Assume that hooking or flushing is performed and one of the switches 15, 16 is turned off for a period t2 that is longer than the predetermined period to of the telephone line required to carry out the operation of the specific mode. Then, as shown in FIG. 3(b), the switch 15 or 16 is connected to the input terminal a of the input circuit 21.
An L level information signal corresponding to the disconnection of the telephone line is supplied for the same period as the off period t2.

At this time, as shown in FIG. 3(C), the CPU 23 outputs the output terminal of the output circuit 25 so that the required period of the telephone line required for executing the operation in the specific mode is
A signal that turns off the switch 17 is generated for a period corresponding to . In this case, the telephone line is disconnected for the disconnection period t2 of the switch 15 or 16, as shown in FIG. 3(d).

Next, FIG. 4 shows another embodiment of the present invention. That is, switches 29 and 30 are connected in parallel to the switches 15 and 16, respectively, and these switches 29.
30 is turned on and off by a signal output from the output terminal d of the output circuit 25. Among these, the switch 29 is turned on in an on-hook state to maintain the telephone line in a connected state in order to realize, for example, an on-hook dial function, a speaker reception function, an auto-busy redial function, and the like.

The operation will be described below with reference to the timing diagram shown in FIG. Here, as mentioned above, the required period of the telephone line required to execute the operation of the specific mode is to, and t is a fixed period that is longer than the period to and shorter than 2to.
ll. This period t11 means that the exchange 11
This is the minimum length of time that the telephone line remains disconnected for which it is determined that the exchange is complete. In other words, if the telephone line continues to be disconnected for longer than the period t11, the exchange 11 determines that the exchange has ended.

First, at time T11 in FIG. 5, as shown in FIG.
5.16 is turned off for a period t12 such that tll-to>t12. Then,
As shown in FIG. 5(b), an L-level information signal corresponding to the disconnection of the telephone line is sent to the input terminal a of the input circuit 21 for the same period as the off period t12 of the switch 15 or 16. is supplied.

At this time, a signal generated from the output terminal d of the output circuit 25 by the CPU 23 turns on the switches 29 and 30 for the period t12, as shown in FIG. 5(C). Therefore, the telephone line is connected at time T1.
The contact state is maintained up to 2. Then, at time TI2, CP
U 23 turns off the switch 11 from the output terminal of the output circuit 25 for a period corresponding to the required period to of the telephone line necessary to carry out the operation of the specific mode, as shown in FIG. 5(d). A signal is generated to set the state, as shown in the figure (e
), the telephone line is disconnected for the same period. Therefore, the exchange 11 can reliably perform the operation in the specific mode.

Further, at time T13 in FIG. 5, as shown in FIG. 5(a), the switch 1 is
5. Either one of 16 is tll-to <t13
Suppose that it is in the off state for a period ti3 <tll. Then,
As shown in FIG. 5(b), an L-level information signal corresponding to the disconnection of the telephone line is sent to the input terminal a of the input circuit 21 for the same period as the off period t13 of the switch 15 or 16. is supplied.

At this time, a signal generated from the output terminal d of the output circuit 25 by CP tJ 23 turns both the switches 29 and 30 on for a period t14 of tll-to-t14, as shown in FIG. 5(C). It will be done. Therefore, the telephone line remains connected until time T14. Then, at time T14, the output terminal of the output circuit 25 is changed by the CPLJ23 for a period corresponding to the required period to of the telephone line necessary to execute the operation in the above-mentioned specific mode, as shown in FIG. 5(d). , a signal is generated to turn off the switch 17, and the telephone line is disconnected for the same period, as shown in FIG. Therefore, the exchange 11 can reliably perform the operation in the specific mode.

Furthermore, at time T15 in FIG. 5, as shown in FIG.
ll-to ) ten (t11+Δt) (However, Δt is
It represents a short period compared to tll. ) It is assumed that the device is in the off state for a period t15. Then,
As shown in FIG. 5(b), an L-level information signal corresponding to the disconnection of the telephone line is sent to the input terminal a of the input circuit 21 for the same period as the off period t15 of the switch 15 or 16. is supplied.

At this time, a signal generated from the output terminal d of the output circuit 25 by the CP LJ 23 turns both the switches 29 and 30 on for a period t14, tll-to-t14, as shown in FIG. 5(C). It will be done. Therefore, the telephone line remains connected until time T16. Then, at time T16, the CPU 23 generates a signal from the output terminal of the output circuit 25 to turn off the switch 17 for a period of t11+Δt, as shown in FIG. 5(d), and as shown in FIG. As shown in , the telephone line is disconnected for the same period. Therefore, exchange v111 is determined to be the end of exchange.

Further, at time T17 in FIG. 5, as shown in FIG.
5.113 is t16> (tll-t
Suppose that it is in the off state for a period t16, which is (t11+Δt). Then, as shown in FIG. 5(b), the switch 15 or 16 is connected to the input terminal a of the input circuit 21.
An L-level information signal corresponding to the disconnection of the telephone line is supplied for the same period as the off period t16.

At this time, a signal generated by the CPU 23 from the output terminal d of the output circuit 25 turns both the switches 29 and 30 on for a period t14 of tll-to-t14, as shown in FIG. 5(C). It will be done. Therefore, the telephone line remains connected until time 718. Then, at time T18, the CPU 23 generates a signal from the output terminal of the output circuit 25 to turn off the switch 17 for a period of t11+Δt, as shown in FIG. 5(d), and as shown in FIG. As shown, the telephone line is disconnected. In this case, as shown in FIG. 5(e), the telephone line continues until time T19 when both switches 15 and 16 are turned on, at which time the exchange 11 determines that the exchange has ended.

According to the configuration of the embodiment shown in FIG. 4, even if there are variations in the hooking period or the flushing period, it is possible to reliably determine whether to execute a specific mode of operation or to complete the exchange, thereby preventing malfunctions. This can be prevented from occurring.

It should be noted that the present invention is not limited to the above-described embodiments, and can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] Therefore, as detailed above, according to the present invention, extremely good telephone control can be achieved which has a simple configuration, can reliably execute operations in a specific mode, and is economically advantageous. equipment can be provided.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing an embodiment of a telephone control device according to the present invention, FIG. 2 is a timing diagram for explaining the operation of the same embodiment, and FIG. 3 is an operation of a modified example of the same embodiment. 4 and 5 are block diagrams showing other embodiments of the present invention, and timing diagrams 6 and 7 to explain the operation thereof, respectively.
Each figure is a block diagram showing a conventional telephone control device. 11...Exchange machine, 12.13...Connection terminal, 14.
... Rectifier circuit, 15-17... Switch, 18...
speech network circuit, 19... handset, 20.
・・Buttush key operation unit, 21・・Input circuit, 22・
...Timer circuit, 23...cpu. 24... Memory, 25... Output circuit, 26... Control unit, 27... Constant current circuit, 28... Constant voltage circuit,
29.30...Switch.

Claims (1)

[Claims] an exchange that detects that the telephone line has been disconnected for a predetermined period of time and executes an operation in a specific mode; and an input terminal to which an information signal indicating that the telephone line has been disconnected is supplied; A telephone control device comprising a control means for performing predetermined processing when the information signal is supplied to a terminal,
Means for forcibly bringing the telephone line into a disconnected state for the predetermined period in a state where the control means is supplied with the information signal or an information signal for the purpose of disconnecting the telephone line to the input terminal. A telephone control device characterized by being attached with.