JPH0588061U - Communication device control device - Google Patents

Abstract

(57) [Abstract] [Purpose] No ringing trunking is used, and no ringing communication is performed using only public lines. [Composition] A communication device includes a call detector 3 for detecting a call signal.
And a relay RY1 for switching the connection destination of the telephone line 1 to the transmitter 5 side or the telephone 7 side, the relay RY1 and the telephone 7
A relay RY2 interconnected with the receiver, a receiver 9 for receiving data sent from the center device, a hook status detector 11 for detecting the status of the hook switch of the telephone 7,
It has a CPU 13. The CPU 13 disconnects the telephone 7 from the line 1 by the relay RY2 when receiving the non-ringing incoming command, and when the call signal is sent, the relay RY1
Connects the transmitter 5 to the line 1. When the telephone 7 is off-hook in the silent mode, the relays RY1 and RY2 are
By connecting the telephone 7 to the line 1 by on-hook,
Connect transmitter 5 to line 1. By releasing the silent mode, the telephone 7 is connected to the line 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a control device for a communication device, which includes a terminal device that transmits data to and from a center device via a line, and a telephone that makes a call via the line.

[0002]

[Prior Art]

 Conventionally, no-ringing communication service has been provided. This communication service uses the existing telephone network and activates the meter terminal installed at the telephone user's home without reading the bell of the telephone from the center device and reads the meter reading value. It is a telecommunications service that can be used. FIG. 5 shows a schematic configuration of a communication system used for a conventional no-ringing communication service.

In FIG. 5, the center device 101 is connected to a calling side exchange 103 via a line 102 for a no ringing service. The meter terminal 105 and the telephone set 106 installed in the telephone user's home 104 are connected to the called side exchange 108 via the subscriber telephone line 107. The meter terminal 105 is composed of a terminal network controller 105a for controlling connection with an exchange and a meter sensor 105b for detecting meter reading values of water, gas and the like. A non-ringing trunk 109 for making a non-ringing incoming call is connected to the called side exchange 108.

When the meter reading is performed, the center apparatus 101 inverts the polarity of the subscriber telephone line 107 by the no ringing trunk 109 and sends out a calling signal. Then, the predetermined meter terminal 105 is activated without ringing the bell of the destination telephone 106. The center device 101 reads the meter reading value data detected by the meter sensor 105b.

[0005]

[Problems to be solved by the device]

 However, the conventional no-ringing communication service has a problem that a special contract fee and a usage fee are required to use the no-ringing trunk, resulting in a high communication cost.

The present invention has been made to solve the above problems, and provides a controller for a communication device capable of performing no ringing communication using only a public line without using a no ringing trunk. The purpose is to

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention, as illustrated in FIG. 1, is a communication device including a terminal device for transmitting data to and from a center device via a line, and a telephone device for making a call via the line. Which is connected to the line, detects a ringing signal, switching means for selectively switching the connection destination of the line to the terminal device side or the telephone side, and the switching means. Switch means interconnected to the telephone, connecting or disconnecting the switching means and the telephone, no-sound instruction means for instructing no-sound mode, and no-sound instruction means in response to the instruction of the no-sound instruction means. A first control means for switching the switch means to a shut-off side, and switching the switching means when a ringing signal is detected by the call detecting means when the silent mode is commanded. Second control means for connecting the line to the terminal device, hook status detection means for detecting that the telephone is on-hook or off-hook, and the hook status detection if the silent mode is commanded. When the off-hook is detected by the means, the switching means is switched to the telephone side, the switch means is switched to the connection side to connect the line to the telephone, and when the on-hook is detected, the switch means is turned on. Third control means for switching to the cutoff side and for switching the switching means to connect the line to the terminal device, no-sound-release cancel command means for commanding cancellation of the no-sound mode, and the no-sound cancellation command means In response to the command, the switching means is switched to the telephone side and the switch means is switched to the connection side. Recombinant and is summarized as a control device of a communication apparatus characterized by comprising a fourth control means for connecting the line to the telephone.

[0008]

[Action]

 In the present invention, switching means for selectively switching the line to the terminal device side or the telephone side, and switching means interconnected to the switching means and the telephone are provided, and when the silent mode is instructed, the first The control means switches the switch means to the cutoff side to disconnect the telephone from the line. When the call detection means detects the call signal in the silent mode, the second control means switches the switching means to the terminal device side to connect the circuit to the terminal device. When the hook status detection means detects an off-hook in the silent mode, the third control means switches the switching means to the telephone side, and switches the switching means to the connection side to connect the line and the telephone. When the hook status detection means detects the on-hook after connecting, the third control means switches the switching means to the blocking side to disconnect the telephone from the line, and switches the switching means to switch the line. Connect to the terminal device.

When the cancellation of the silent mode is instructed, the fourth control means switches the switching means to the telephone side, and also switches the switching means to the connection side to connect the telephone to the line.

[0010]

【Example】

 Hereinafter, the communication device of the present embodiment will be described with reference to the drawings. As shown in FIG. 2, the communication device according to the present embodiment includes a call detector 3 that is connected to a telephone line 1 and detects a call signal, and a connection destination of the telephone line that is a DTMF (dual tone multi-frequency) transmitter. The relay RY1 that selectively switches to the 5 side or the telephone 7 side, the relay RY2 interconnected to the relay RY1 and the telephone 7, the DTMF receiver 9 that receives the data sent from the center device (not shown), and the silent When the telephone 7 is off-hook or on-hook in the mode, the relay is output based on signals from the hook status detector 11 and the call detector 3, the DTMF receiver 9 and the hook status detector 11. The CPU 13 controls the RY1, RY2 and the DTMF transmitter 5. The DTMF transmitter 5 transmits meter reading data and the like to a center device (not shown) in a silent mode in which the telephone 7 receives an incoming call without ringing.

The DTMF transmitter 5, the DTMF receiver 9 and the CPU 13 constitute a terminal device. The relay RY1 corresponds to the switching means, and the relay RY2 corresponds to the switching means. The terminals a1 and a2 of the relay RY1 are connected to the ringing detector 3, one switching contact b1 and b2 are connected to the switching contacts f1 and f2 of the relay RY2, and the other contact switching c1 and c2 are DTMF transmitters. It is connected to the transformer 15 on the fifth side. A transformer 17 on the DTMF receiver 9 side is connected between one terminal of the call detector 3 and the terminal a2 of the relay RY1.

The switching contact e1 of the relay RY2 is connected to the power supply line Vcc, the switching contact e2 is connected to the hook condition detector 11, and the terminals d1 and d2 are connected to the telephone 7. Each of the relays RY1 and RY2 has a transistor Tr1 and Tr2 that perform a switching operation according to a control signal from the CPU 13, and an electromagnet L1 that attracts the movable pieces g1, g2, h1 and h2 when the transistors Tr1 and Tr2 are turned on. , L2 and a spring (not shown) for urging the movable pieces g1, g2, h1, h2 in the direction opposite to the attraction direction of the electromagnets L1, L2. The movable pieces g1 and g2 are configured to interlock with each other, and the movable pieces h1 and h2 are configured to interlock with each other.

The telephone 7 has a ringing bell 71 that rings by a ringing signal sent through the line 1, a handset and a telephone circuit 72, and a hook switch 73 that is turned on and off by hanging the handset. The hook status detector 11 includes an optical device 111 including a pair of light emitting elements 111a and a light receiving switch 111b, a resistor R, and an inverter 112.

FIG. 3 is a flowchart showing a switching process among the multitasks executed by the CPU 13. Next, the switching processing operation of this embodiment will be described with reference to FIG. In step S1, initialization processing is performed. In this initialization processing, the CPU 13 outputs a low level signal to the base of the transistor Tr1 to turn off the transistor Tr1 and outputs a high level signal to the base of the transistor Tr2 to turn on the transistor Tr2. Then, the electromagnet L1 of the relay RY1 becomes non-energized, the movable pieces g1, g2 contact the switching contacts b1, b2, the electromagnet L2 of the relay RY2 becomes energized, and the movable pieces h1, h2 become The switching contacts f1 and f2 are contacted. As a result, the telephone 7 is connected to the line 1 through the relays RY2 and RY1 and the call detector 3.

Therefore, when a calling signal is sent from the outside, the calling bell 71 of the telephone 7 rings. At this time, a telephone call can be made via the handset of the telephone 7. In step S2, it is determined whether or not there is a non-ringing incoming command for making an incoming call without ringing the calling bell 71 of the telephone set 7. If no non-ringing incoming command is received, in step S4, the non-ringing incoming command is released. It is determined whether or not there is a command to cancel, and if the command to cancel the ringing-free incoming command is not received, in step S7, it is judged whether or not it is in the ringing-less mode from the ringing-free reception command to the cancellation command. To do.

The silent incoming call command and its cancellation command are sent from a center device (not shown) and received by the DTMF receiver 9. Then, the CPU 13 decodes the received signal and determines whether it is a silent incoming call command or a cancellation command. When it is determined in step S2 that the non-ringing incoming command has been received, the process proceeds to step S3, and the CPU 13 turns off the transistor Tr2. As a result, the electromagnet L2 of the relay RY2 is turned off, the movable pieces h1 and h2 of the relay RY2 are switched to the switching contacts e1 and e2, and the telephone 7 is disconnected from the line 1.

Therefore, even if a calling signal is sent from the outside, the calling bell 71 of the telephone 7 does not ring. Once the ringing-free incoming command is issued, if the cancellation command is not received, it is determined in step S7 of the processing routine that the ringing mode is set. In the silent mode, it is determined in step S8 whether or not there is an off-hook. If there is no off-hook, it is determined in step S11 whether or not there is an on-hook. 3 determines whether a ringing signal has been detected. If no calling signal is detected, the process returns to step S2.

When it is determined in step S14 that there is a call signal, the CPU 13 turns on the transistor Tr1 in step S15. As a result, the electromagnet L1 of the relay RY1 is energized, the movable pieces g1 and g2 of the relay RY1 are switched to the switching contacts c1 and c2, and the DTMF transmitter 5 is connected to the line 1 via the ring detector 3. To be done.

Therefore, the CPU 13 can exchange data with the center device (not shown) using the dual tone signal via the DTMF transmitter 5. In the silent mode, when the handset of the telephone 7 is removed, the hook switch 73 is closed. At this time, since the movable pieces h1 and h2 of the relay RY2 are switched to the switching contacts e1 and e2, a current flows through the light emitting element 111a of the hook status detector 11. Therefore, the light emitting element 111a emits light, the light receiving switch 111b conducts by the light, a current flows, a voltage drop occurs due to the resistor R, the voltage of the node n becomes low level, and a high level signal is output from the inverter 112. It is sent to CPU 13.

If the high level signal is input to the CPU 13 from the inverter 112 when the process proceeds to step S8 of the processing routine, the CPU 13 determines that there is an off-hook. If there is an off-hook, the process proceeds to step S9, and the CPU 13 turns off the transistor Tr1. As a result, the electromagnet L1 of the relay RY1 is turned off, and the movable pieces g1 and g2 of the relay RY1 are switched to the switching contacts b1 and b2. That is, the relay RY1 is switched to the telephone 7 side. Next, in step S10, the CPU 13 turns on the transistor Tr2. As a result, the electromagnet L2 of the relay RY2 is energized, the movable pieces h1, h2 are switched to the switching contacts f1, f2, and the telephone set 7 is connected to the line 1 via the relays RY1, RY2 and the call detector 3. ..

Therefore, it is possible to make a call from the telephone 7 even in the silent mode. When the call is finished and the handset is returned, the hook switch 73 is opened. Then, no current flows in the light emitting element 111a of the hook status detector 11, the light receiving switch 111b becomes non-conductive, the voltage of the node n becomes high level, and the low level signal is sent from the inverter 112 to the CPU 13. It

If the low level signal is input to the CPU 13 from the inverter 112 when the process proceeds to step S11 of the processing routine, the CPU 13 determines that there is an on-hook. If there is an on-hook, the process proceeds to step S12, and the CPU 13 turns off the transistor Tr2. As a result, the electromagnet L2 of the relay RY2 is turned off, the movable pieces h1 and h2 of the relay RY2 are switched to the switching contacts e1 and e2, and the telephone 7 is disconnected from the line 1. Next, in step S13, the CPU 13 turns on the transistor Tr1. As a result, the electromagnet L1 of the relay RY1 is energized, the movable pieces g1 and g2 are switched to the switching contacts c1 and c2, and the DTMF transmitter 5 is connected to the line 1 via the call detector 3. ..

Therefore, it becomes possible to transmit data from the DTMF transmitter 5 to the center device again. If it is determined that there is a command to cancel the silent mode, the process proceeds from step S4 to step S5. In step S5, the CPU 13 turns off the transistor Tr1. As a result, the electromagnet L1 of the relay RY1 is turned off, and the movable pieces g1 and g2 of the relay RY1 are switched to the switching contacts b1 and b2. That is, the relay RY1 is switched to the telephone 7 side. Next, in step S6, the CPU 13 turns on the transistor Tr2. As a result, the electromagnet L2 of the relay RY2 is energized, the movable pieces h1, h2 are switched to the switching contacts f1, f2, and the telephone set 7 is connected to the line 1 via the relays RY1, RY2 and the call detector 3. It

Therefore, as in the initial state, when a calling signal is sent from the outside, the calling bell 71 of the telephone 7 sounds. At this time, a call can be made via the handset of the telephone 7. The execution of the processing of steps S2, 3 functions as the first control means, the execution of the processing of steps S7, 14, 15 functions as the second control means, and steps S7, 8, 9, 10, 11, The execution of the processing of 12 and 13 functions as the third control means, and the execution of the processing of steps S4, 5 and 6 functions as the fourth control means.

As described above, according to the present embodiment, when the non-ring incoming command from the center device is received, the telephone 7 is disconnected from the line 1 by the relay RY2, so that the call signal is sent. The ringing bell 71 of the telephone 7 does not ring even when the call is made. When a ringing signal is sent in the silent mode, the relay RY1 connects the DT MF transmitter 5 to the line 1 so that data can be exchanged with the center device.

Even in the silent mode, when the telephone 7 is put into the off-hook state, the telephones 7 and the line 1 are connected by the relays RY1 and RY2 so that the telephone can be talked, and the on-hook state is established. By doing so, the DTMF transmitter 5 is connected to the line 1 and data can be exchanged again with the center device.

Further, when the silent mode is released, the telephone 7 is connected to the line 1 by the relays RY1 and RY2, and the telephone can be talked anytime. Therefore, since this communication device does not ring for all ringing signals during silent operation, you can make a call by lifting the handset from the terminal, such as at a cash corner of a bank, but you can call from the center device. It is effective when applied when you do not want to answer the phone.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes. For example, the time for operating the relays RY1, RY2 may be stored in a memory (not shown), and the silent mode may be set and released when the time is reached. For example, as shown in FIG. 4, when it is desired to make a silent incoming call from the center device at 12:00, "12:00" is stored in the memory of the center device and this device. Then, one minute before 12:00, the CPU 13 switches the relay RY2 from the state 1 to the state 2 and returns it to the state 1 when the communication is completed. Here, the state 1 is a state where the movable pieces h1 and h2 are switched to the switching contacts f1 and f2 side, and the state 2 is that the movable pieces h1 and h2 are switched to the switching contacts e1 and e2 side. It is in a state of being. By switching as described above, a silent incoming call can be realized.

[0029]

[Effect of the device]

 As described above, according to the present invention, the ringing bell of the telephone does not ring when the ringing signal is sent when the ringing-free incoming call command is received from the center device. When a ringing signal is sent in the silent mode, the terminal device is connected to the line and data can be exchanged with the center device.

As a result, a ringing-free incoming call similar to that of the no ringing service can be made without using the no ringing trunk, and the communication cost can be reduced. Even in the silent mode, by putting the telephone in the off-hook state, the telephone and the line can be connected to make a call, and by putting the telephone in the on-hook state, the terminal device can be connected to the line. Then, the data can be exchanged with the center device again, and when the silent mode is released, the telephone and the line are connected and the call can be made anytime.

Therefore, it is possible to provide a communication device capable of no ringing communication and having excellent operability.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a basic configuration of the present invention.

FIG. 2 is a circuit diagram of a communication device according to an embodiment of the present invention.

FIG. 3 is a flow chart for explaining a switching processing operation of the embodiment of the present invention.

FIG. 4 is an explanatory diagram of another example of setting and cancellation of a silent incoming call.

FIG. 5 is an explanatory diagram of a conventional no-ringing communication service system.

[Explanation of symbols]

1 ... Line 3 ... Call detector 5 ... DTMF transmitter
7 ... Telephone 9 ... DTMF receiver 11 ... Hook status detector 1
3 ... CPU RY1, RY2 ... Relay

Claims (1)

[Scope of utility model registration request] 1. A control device for a communication device comprising a terminal device for transmitting data to and from a center device via a line, and a telephone set for making a call via the line, the control device being connected to the line, Call detection means for detecting a call signal, switching means for selectively switching the connection destination of the line to the terminal device side or the telephone side, the switching means and the telephone are interconnected, the switching means and the Switch means for connecting or disconnecting a telephone, no-sound command means for instructing a no-sound mode for receiving an incoming call to the terminal device without ringing the telephone, and the switch means according to a command of the no-sound instruction means And a switching means when the ringing signal is detected by the call detecting means when the silent mode is commanded. Switching the line to connect the line to the terminal device
Control means, hook status detecting means for detecting that the telephone is on-hook or off-hook, and when the off-hook is detected by the hook status detecting means when the silent mode is commanded, the switching Switch means to the telephone side and switch means to the connection side to connect the line to the telephone set, and switch on and off the switch means and switch the switching means when an on-hook is detected. Third control means for connecting the line to the terminal device, a no-sound cancellation command means for commanding cancellation of the no-sound mode, and the switching means according to a command of the no-sound cancellation command means. Switching to the telephone side and switching the switch means to the connecting side to connect the line to the telephone; 4. A control device for a communication device, comprising: