JP6063278B2 - Terminal network controller - Google Patents

Description

  The present invention relates to a terminal network control device, and more particularly to a terminal network control device of a communication system that performs data transmission with a center device using a communication line.

  There has been provided a communication device using a communication line for providing a service for notifying caller information before a call signal to a called party at the time of calling.

  For example, Patent Document 1 shows a communication device having a call rejection function that is connected to a communication line that provides a service for transmitting a signal for notifying caller information before a call signal to a called party at the time of calling. When an external communication device corresponding to the service is connected, the communication device causes the external communication device to perform a caller information detection sequence when an incoming call is received. Regardless of the presence or absence of registration of caller information to be rejected, the communication apparatus can effectively perform incoming call rejection.

  Further, in Patent Document 2, in the terminal network control device, when a call is made from the center device, a caller telephone number signal following the prelinger signal is detected. When the caller telephone number signal recognizes that the call is from the center device, the processing set in accordance with the center device is performed, and the processing result is transmitted to the center device.

JP2001-237980 JP 2002-165030 A

  In the terminal network control device, there is an urgent call operation such as a terminal call operation having a security function. When trying to start a call operation with urgency, if the line is being used by an unnecessary call such as a nuisance call, the call operation cannot be started at an appropriate time. There was a problem of being transferred to retry processing.

  However, in Patent Document 1, when a call is received, the communication line is in use until a caller information detection sequence is performed and an incoming call rejection operation is performed. Therefore, when a terminal call with urgency occurs while using the line, the call operation is shifted to a retry process until the line becomes available.

  Further, in Patent Document 2, the terminal network control device detects a caller telephone number signal following the pre-linger signal, and executes a process according to the detection result. The number is not detected. For this reason, a call origination operation that occurs while using a line due to a call process such as a nuisance call is transferred to a retry process.

  Therefore, an object of the present invention is to provide a terminal network control apparatus that enables a terminal call operation at an appropriate timing.

  According to an aspect of the present invention, a terminal network control apparatus to which a first terminal is connected is connected to a communication line and communicates with the second terminal via the communication line, and controls the communication part. A control unit.

  When the second terminal calls the first terminal, the communication unit identifies the second terminal that is the calling source before receiving a call signal to the first terminal that is the called party via the communication line. Receives sender information. The control unit includes a collation unit that collates transmission source information received by the communication unit and predetermined terminal identification information when an incoming call is received from the second terminal. If the control unit determines that the two pieces of information match, the control unit connects the communication line in response to the call signal received next to the caller information and continues to disconnect the line connection. Control.

  Preferably, the terminal network control device is further connected with a third terminal that makes a terminal call and performs data communication with the center device via a communication line. When the third terminal makes a call after the incoming call from the second terminal and the match is determined from the collation result, the control unit connects the communication line for the terminal call following the disconnection. The communication unit is controlled to do so.

  Preferably, the control unit further includes a storage unit that stores the terminal identification information, receives the terminal identification information from the center device, and stores the terminal identification information in the storage unit.

  Preferably, the control unit further includes a storage unit that stores the terminal identification information, receives the terminal identification information from the first terminal, and stores the terminal identification information in the storage unit.

  Preferably, the control unit further includes a storage unit that stores the terminal identification information, and stores the transmission source information received by the communication unit in the storage unit when a call is received from the second terminal.

  According to another aspect of the present invention, there is provided a control method for a terminal network control device that is connected to a first terminal and communicates with a second terminal via a communication line. When the second terminal calls the first terminal, the terminal network control device passes the communication terminal via the communication line before receiving the call signal to the first terminal that is the called party. Receive identifying source information. The control method includes a step of collating received source information with predetermined terminal identification information at the time of an incoming call from the second terminal, and when it is determined that the two information match from the collation result, And a step of connecting the communication line in response to a call signal received next to the line and a step of disconnecting the line connection following the line connection.

  According to still another aspect of the present invention, the terminal network control apparatus has a processor, and a program for causing the processor to execute the control method is provided.

  According to the present invention, when the control unit determines that both pieces of information match from the collation result, the control unit connects the communication line in response to the call signal received next to the source information, and subsequently disconnects the line connection. Thus, when a terminal call is detected, an immediate line connection is established and data communication by the terminal call can be started, so that a terminal call operation at an appropriate timing is possible.

It is a block diagram of the communication system which concerns on Embodiment 1 of this invention. It is a block diagram of the terminal network control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the communication sequence for the incoming call rejection of the unwanted telephone which concerns on Embodiment 1 of this invention. 4 is a process flowchart corresponding to the communication sequence of FIG. 3. It is a figure which shows the communication sequence which performs the incoming call rejection of the troublesome telephone at the time of the terminal call start which concerns on Embodiment 2 of this invention. 6 is a process flowchart corresponding to the communication sequence of FIG. 5. It is a figure which shows the communication sequence for registering a troublesome telephone number from the center apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows the communication sequence for registering a troublesome telephone number from the telephone connected to the terminal network control apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows the communication sequence for registering the incoming telephone number which concerns on Embodiment 3 of this invention as a nuisance telephone number.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the same constituent elements are denoted by the same reference numerals in the respective drawings, and detailed description thereof will not be repeated.

  The terminal network control apparatus according to the present embodiment is connected to a communication line that provides a service for transmitting a signal for notifying caller information before a calling signal to a called party at the time of calling. When the terminal network control device receives a call from the communication line, it connects the communication line with the caller terminal, and the identification information (for example, telephone number) of the caller terminal received at this time Predetermined identification information is collated, and when the two identification information matches, the line connection is disconnected following the line connection.

[Embodiment 1]
FIG. 1 is a configuration diagram of a communication system according to Embodiment 1 of the present invention. Referring to FIG. 1, a communication system 10 includes a center device 11, a center side switching center 12, a telephone line 13 that is a communication line, a terminal side switching center 14, a terminal network control device 15, a terminal calling center device 11, and A meter 16 corresponding to a third terminal for data communication, a telephone 17 corresponding to a first terminal connected to the terminal network control device 15, a nuisance telephone 18 corresponding to an external second terminal, and a nuisance telephone side switching center 19 Prepare.

  The terminal network control device 15 is installed at each user's house, for example. Examples of the meter 16 include a meter that measures the amount of gas and water used, but the type of meter is not limited to these. The telephone 17 is a telephone installed in the user's home. In the communication system 10, the center side switching center 12, the terminal side switching center 14, and the terminal network control device 15 are sequentially connected from the center device 11 to the terminal network control device 15 side via the telephone line 13. . Further, a meter 16 is connected to the terminal network control device 15 through, for example, a two-wire serial signal line, and a telephone set 17 is connected through the telephone line 13.

  The center device 11 is constituted by a host computer or the like, collects information by receiving information from the terminal network control device 15 via the telephone line 13, and transmits information to the terminal network control device 15. The center side switching center 12 is a switching center on the side of the center device 11 connected to the center device 11. The terminal side switching center 14 is a switching center on the terminal network control device 15 side connected to the terminal network control device 15. The two exchanges are connected by a telephone line 13. Note that the terminal network control device 15 may perform wireless communication with the meter 16. When performing wireless communication, the terminal network control device 15 operates as a parent device, and the meter 16 operates as a child device.

  The nuisance telephone 18 is a telephone that dials the telephone number of the telephone 17 and performs a nuisance call operation such as mischief to the telephone 17. The nuisance telephone 18 also communicates with the terminal network controller 15 via the terminal side switching center 14 from the nuisance telephone side switching center 19, which is an exchange on the side of the nuisance telephone 18, via the telephone line 13.

  In FIG. 1, a communication line such as an analog telephone line or an ISDN (Integrated Services Digital Network) line can be applied to the telephone line 13 which is a communication line. The type of communication line is not limited to the line of these telephone service networks. For example, the communication line may include a wireless network, and identification information (such as a telephone number) may be notified to the other party via the wireless network and the telephone line 13.

  In FIG. 1, for the sake of simplicity of explanation, the center apparatus 11 and the user's home terminal (meter 16, telephone 17) communicate one-on-one via the switching center. A plurality of different user home terminals can be connected. Even in that case, each embodiment can be similarly applied.

  In operation, the center device 11 or the nuisance telephone 18 connects the line with the center side switching center 12 or the nuisance telephone side switching center 19 by off-hooking, and dials (calls) the telephone number on the user side. A dial signal indicating the dialed telephone number is transmitted to the terminal-side switching center 14, and the terminal-side switching center 14 transmits a ringer signal as a calling signal to the terminal network control device 15 based on the telephone number indicated by the received dial signal. To do. The terminal network control device 15 outputs the received ringer signal to the telephone set 17. The telephone 17 outputs a predetermined ringer sound (ringing sound) based on the input ringer signal and notifies the user of the incoming call.

  In the present embodiment, it is assumed that the number display service is performed in the communication system 10. In the number display service, the first ringer signal from the terminal-side switching center 14 is called a pre-linger signal, and the source of the center apparatus 11 or the nuisance telephone 18 is identified between the pre-linger signal and the next ringer signal. For this reason, a signal indicating a telephone number (hereinafter referred to as a caller telephone number) which is transmission source information is set to be inserted. The terminal network control device 15 and the telephone set 17 correspond to the number display service, and have a configuration for detecting a caller telephone number when an incoming call is received.

  The terminal network controller 15 connects the telephone line 13 and electrically insulates the telephone line 13 from the inside of the apparatus, captures and opens the telephone line 13 according to a given command, the telephone line 13 and an external terminal (telephone 17 , Meter 16) connection switching, control of the telephone 17 by dial signals, monitoring of the signal on the telephone line 13, and the like.

  FIG. 2 is a configuration diagram of the terminal network control apparatus 15 according to Embodiment 1 of the present invention. Referring to FIG. 2, terminal network control device 15 includes a main line unit 20 corresponding to a microcomputer having a processor such as a CPU (Central Processing Unit), a modem unit 21, and a station line unit to which telephone line 13 is connected. 22, a power supply unit 23 that supplies power to each unit, a meter I / F (abbreviation of interface) unit 24, and a switch 25 that can be operated by the user.

  The office line unit 22 includes a switching circuit for connecting and disconnecting the telephone set 17 to and from the telephone line 13, an off-hook detection circuit, and the like. The modem unit 21 modulates the digital signal from the main control unit 20 into an analog signal that can be transmitted through the telephone line 13 and outputs the analog signal to the telephone line 13 via the office line unit 22. The received analog signal is demodulated into a digital signal in a format that can be processed by the main control unit 20 and output to the main control unit 20.

  The main control unit 20 includes a memory unit 20a including a program executed by the CPU and a nonvolatile memory for storing various data. The main control unit 20 is connected to the station line unit 22 via the modem unit 21 and is also connected to a meter I / F unit 24 that transmits and receives signals to and from the meter 16. The main control unit 20 inputs measurement data from the meter 16 via the meter I / F unit 24 and a terminal calling factor when the terminal is called.

(Outline of processing when receiving unwanted calls)
When the user performs an off-hook operation on the telephone set 17 by outputting the ringer sound described above, or when the user's absence is activated, the telephone line connection via the telephone line 13 is connected. Then, a call with the other party's telephone is started. Thereafter, the telephone line 13 is in use until the telephone call is finished (the telephone 17 is turned on or off by the telephone 17), and the terminal call operation of the meter 16 during this period is a retry process until the telephone line 13 becomes free. Will be moved to. In order to avoid this, in the present embodiment, when the terminal network control device 15 detects an incoming call from the nuisance telephone set 18, once the telephone line 13 is connected and then immediately disconnected, To do. As a result, it is possible to prevent the telephone line 13 from being used due to a nuisance call and the terminal call operation to shift to the retry process.

  Specifically, the telephone number data of the nuisance telephone 18 is stored in advance in the memory unit 20a. When the CPU of the main control unit 20 inputs the caller telephone number after the pre-linger signal through the modem unit 21, the function of the collation unit that collates the caller telephone number with the telephone number stored in the memory unit 20a. Have When it is determined that the collation result indicates a match between the two telephone numbers, the CPU instructs the station line unit 22 to stop outputting the ringer signal received thereafter to the telephone set 17 behind. Further, the terminal network control device 15 and the nuisance telephone 18 via the telephone line 13 are temporarily connected, and after responding to the nuisance telephone 18, they are immediately disconnected. Thereby, the incoming call from the nuisance telephone set 18 to the telephone set 17 is rejected, and the terminal call operation is prevented from being hindered.

(Nuisance call rejection sequence)
FIG. 3 is a diagram showing a communication sequence for rejecting incoming calls for unwanted calls according to Embodiment 1 of the present invention. FIG. 4 is a process flowchart corresponding to the communication sequence of FIG. With reference to FIG. 3 and FIG. 4, the operation on the terminal network control device 15 side when an incoming call is received from the nuisance telephone 18 will be described. The processing in steps S11 to S14 in FIG. 3 is executed by the terminal network control device 15 or the telephone set 17, and the processing in steps S15 and S16 is executed by the terminal network control device 15. Here, in order to simplify the description, it is assumed that the processing of steps S11 to S14 is executed by the terminal network control device 15.

  First, when the nuisance telephone 18 makes a call, the terminal network control device 15 receives a signal from the nuisance telephone 18 via the center side switching center 12 and the terminal side switching center 14 (step S10 in FIG. 4, step in FIG. 3). T1).

  Specifically, when the CPU of the main control unit 20 of the terminal network control device 15 receives a pre-ringer signal from the terminal-side switching center 14 and detects an incoming call (steps S11 and T2), the incoming call is based on the detection result. Is processed by the rear telephone 17 or the terminal network control device 15. When it is determined to be processed by the telephone set 17, a prelinger signal is output to the telephone set 17, and when the telephone set 17 receives the prelinger signal, it transmits a primary response (step T3). Then, the pre-ringer signal output to the telephone set 17 is stopped, and when the pre-ringer signal is received, the terminal network control device 15 closes a DC loop by a circuit (not shown) of the office line unit 22 (DC current loops between the lines). As a result, the telephone line 13 is captured, and the CPU transmits a primary response to the exchange via the captured telephone line 13 (step T3) and connects to the line (step S12). As described above, “connecting to a line” means responding to a ringer signal, and a call can be made when the line is connected. In the number display service, the telephone 17 is set so as not to emit a ringer ringing tone when the line is connected by the prelinger (step S12).

  After the line connection, the switching center transmits the caller telephone number following the prelinger signal when receiving the primary response (step T4). When the terminal network controller 15 receives a caller telephone number when the terminal network controller 15 transmits a primary response, the CPU of the main controller 20 of the terminal network controller 15 stores (saves) the received caller telephone number in the internal memory. However, when the telephone set 17 at the rear side makes a primary response, the caller telephone number is received (spoofed) (steps S13 and T5). Here, since the terminal network control device 15 is supposed to make a primary response, the terminal network control device 15 receives the caller telephone number without storing it, and stores the received caller telephone number in the internal memory.

  Thereafter, the telephone line 13 connected to the device that has transmitted the primary response is primarily disconnected (steps S14 and T6). In the primary disconnection, the office line unit 22 releases the captured telephone line 13 by instructing the office line unit 22 to disconnect the closed DC loop. As a result, the call is changed from the call enabled state to the call disabled state.

  The CPU of the main control unit 20 collates the nuisance telephone number stored in the memory unit 20a with the received caller telephone number (step S15). If the CPU determines that the collation result indicates a mismatch between the two telephone numbers (“mismatch” in step S16), then the CPU instructs the office line unit 22 to connect the rear telephone 17 to the telephone line 13. The office line unit 22 connects the telephone set 17 to the telephone line 13 in response to the command. As a result, the telephone set 17 receives a ringer signal from the ringing signal and outputs a ringer sound. When the user notices the ringer sound and performs an off operation, a normal call can be started (step S17).

  On the other hand, if the collation result indicates a match, that is, it is determined that the incoming call is from the nuisance telephone 18 (“match” in step S16), the CPU of the main control unit 20 transmits the caller telephone number following the caller telephone number. A ringer signal is received (steps S18 and T7). The received ringer signal is not output to the telephone set 17, and the CPU controls the station line unit 22 to transmit a secondary response and close the DC loop (steps S19, T8). As a result, the line that was primarily disconnected is connected (step T9). The office line unit 22 subsequently disconnects the DC loop after the line connection (steps S20 and T10). As a result, the connected line is immediately disconnected.

  According to the first embodiment, when the nuisance telephone 18 calls the telephone 17, the office line unit 22 receives a ringer signal that is a calling signal to the telephone 17 that is the called party via the telephone line 13. Before receiving caller information (telephone number of the nuisance telephone 18) for identifying the nuisance telephone 18 of the caller, the CPU of the main controller 20 receives the call from the nuisance telephone 18 (prelinger signal reception). A collation unit (step S15) that collates the source information received by the line unit 22 and predetermined terminal identification information (nuisance telephone number stored in the memory unit 20a) is included. If it is determined from the collation result that the two information match, the telephone line unit 22 connects the telephone line 13 in response to the call signal received next to the caller information, and then disconnects the line connection. To control.

  Therefore, when the CPU determines that the call from the nuisance telephone 18 is an incoming call, the incoming call is rejected without connecting the line to the telephone 17 behind (the telephone 17 is not ready for a call). The office line unit 22 disconnects the line after responding to the nuisance telephone 18 in accordance with the command. As a result, the telephone line 13 can be prevented from being used due to a nuisance telephone call, and when the terminal 16 calling operation of the meter 16 occurs, the telephone line 13 is not transferred to the retry process, but is promptly made. The measurement data can be transmitted to the center apparatus 11 via.

[Embodiment 2]
In the second embodiment, when an incoming call from a telephone (such as the nuisance telephone 18) is started at a timing when the meter 16 starts a terminal call for transmitting measurement data or the like, conventionally, a call operation is not performed. Retry processing has been started, but it is possible to detect a nuisance call as in the first embodiment, so that the calling operation is made to wait, and the nuisance call is made to wait after the terminal network control device 15 responds and disconnects the line. The calling operation that has been waiting is started. As a result, the terminal call operation can be started without shifting to the retry process. Since the configuration of the communication system and terminal network control device 15 of the second embodiment is the same as that of the first embodiment, description thereof will not be repeated.

(Nuisance call rejection sequence at the start of terminal call)
FIG. 5 is a diagram showing a communication sequence for rejecting an incoming junk call when starting a terminal call according to Embodiment 2 of the present invention. FIG. 6 is a process flowchart corresponding to the communication sequence of FIG. With reference to FIGS. 5 and 6, the operation on the terminal network control device 15 side when an incoming call is received from the nuisance telephone 18 will be described.

  With reference to FIG. 6, the process of step S30-S34 is performed similarly to step S10-S14 of FIG. First, when there is a call from the nuisance telephone 18 (step S30 in FIG. 6 and step T1 in FIG. 5), the terminal network control device 15 receives a pre-linger signal from the terminal-side switching center 14 (steps S31 and T2). Depending on the judgment of the network control device 15, processing is performed by the telephone 17 behind or processing by the terminal network control device 15, whichever one is processed transmits a primary response and is connected to the line (steps S 32 and T 3). If the terminal telephone number transmitted subsequently is received and the terminal network control device 15 stores or the telephone 17 behind the terminal responds, the terminal network control device 15 steals the caller telephone number. (Step S33). Then, the device that has transmitted the primary response primarily disconnects the connected telephone line 13 (step S34).

  During the processing of steps S30 to S34, the CPU of the main control unit 20 of the terminal network control device 15 determines whether or not a terminal call factor has been received from the meter 16 (steps S35 and T3a). If it is determined that it has not been received (“no reception” in step S35), the process proceeds to step S37 described later. If it is determined that it has been received (“received” in step S35), the CPU By storing the received terminal call cause in the memory unit 20a, the terminal call operation is made to wait in the terminal network control device 15 (steps S36 and T3b).

  Thereafter, as in steps S15 and S16, the CPU collates the nuisance telephone number stored in the memory unit 20a with the received caller telephone number (steps S37, T4, T5), and both telephone numbers are obtained from the collation result. It is determined whether or not they match (step S38).

  If it is determined that they do not match ("mismatch" in step S38), the telephone 17 is set in a state in which normal telephone call is possible. At this time, the CPU searches the memory unit 20a and stores the terminal call cause. It is determined whether or not the terminal 16 calling operation of the meter 16 is on standby (step S39). If it is determined that it is not waiting (NO in step S39), the process proceeds to step S41 described later. If it is determined that it is waiting (YES in step S39), a terminal call operation based on the stored terminal call factor is performed. The system shifts to retry processing and preferentially processes calls (step S40). Then, similarly to step S17, the rear telephone set 17 is connected to the telephone line 13 to enable a call (step S41). After the call ends, the process ends.

  Here, in the retry process of the terminal call operation, the CPU retries the terminal call process for a predetermined time interval and a predetermined number of times without notifying the meter 16 of the failure of the terminal call. . Specifically, the terminal call factor from the meter 16 includes identification information such as the telephone number of the center apparatus 11 that is the other party, and the CPU performs a call operation based on the identification information ( (Including the dialing operation) is repeated for the above time interval and number of times until there is a response from the other party or until the call is terminated.

  If it is determined that it matches the nuisance telephone number (YES in step S38), the terminal network control device 15 receives a ringer signal transmitted after the caller telephone number in the same manner as in steps S18 to S20 (step S18). S42, T7), a secondary response is transmitted and the line is connected (steps S43, T8, T9), and the line is disconnected (immediately) after the line connection (steps S44, T10).

  When a nuisance call is detected and the line is disconnected, the line is subsequently connected and the terminal call operation in standby is processed. Specifically, the CPU determines whether or not the terminal call operation is waiting as in step S39 (step S45). If it is determined that it is waiting (YES in step S45), the telephone number of the center apparatus 11 is dialed to connect the line (steps S46, T11 to T13), and the measurement data included in the terminal call factor toward the center apparatus 11 The calling operation such as transmission is performed (step S47). Thereafter, the process ends. On the other hand, if it is determined that the terminal call operation is not waiting (NO in step S45), the process ends with the line disconnected.

  In the second embodiment, the CPU of the main control unit 20 sets the nuisance telephone number based on the collation result of the collation unit when the meter 16 makes a terminal call after an incoming call from an external telephone (such as the nuisance telephone 18). When the match is determined, after the line disconnection (step S44), a command is output to control the office line unit 22 so as to connect the telephone line 13 for calling the terminal.

  Therefore, even if the incoming call of the nuisance call is started at the timing when the meter 16 starts the terminal call for transmitting the measurement data, the nuisance call is kept waiting until it is determined whether the call is a nuisance call. When it is determined that the call is made, the terminal network control device 15 responds to the nuisance call and disconnects the line. Then, the line connection can be continued and the calling operation that has been waiting can be started. As a result, data transmission can be started at an appropriate timing without delaying the terminal call operation by shifting to the retry process.

[Embodiment 3]
In the third embodiment, a method for registering the nuisance telephone number in the memory unit 20a will be described using the function of the storage unit of the CPU of the main control unit 20. FIG. 7 is a diagram showing a communication sequence for receiving and registering a nuisance telephone number from the center apparatus 11 according to Embodiment 3 of the present invention.

  Referring to FIG. 7, a CPU (not shown) of center device 11 registers one or more nuisance telephone numbers based on key inputs from an operator or the like in a list in internal memory of center device 11 (step T21 in FIG. 7). . The center device 11 is connected to the terminal network control device 15 (step T22), reads the list in which the nuisance telephone numbers are registered from the internal memory, and transmits the list to the terminal network control device 15 via the telephone line 13 ( Step T23). The main control unit 20 receives the list and stores it in the memory unit 20a (step T24). After the storage, the terminal network control device 15 transmits a response indicating the storage to the center device 11 (step T25). Thereafter, an end message is transmitted and received between the center apparatus 11 and the terminal network control apparatus 15 (steps T26 and T27), and the center apparatus 11 disconnects the connected line (step T28).

  Here, the list is downloaded from the center apparatus 11 via the telephone line 13, but may be downloaded via another communication line (Internet, wireless line, etc.) that does not depend on the telephone line 13.

  Alternatively, the list may be stored in the memory unit 20a using a storage medium (such as a memory card) that stores the list.

  The registration of the nuisance telephone number is not limited to the method of downloading and registering from the center apparatus 11 as shown in FIG. 7, but can also be registered by the user's manual operation. FIG. 8 is a diagram showing a communication sequence for registering a nuisance telephone number from the telephone set 17 according to Embodiment 3 of the present invention.

  Referring to FIG. 8, the user switches the operation mode of terminal network control device 15 to the nuisance call registration mode by pressing switch 25 of terminal network control device 15 (step T31 in FIG. 8). After the mode is switched, the user dials a telephone number from the telephone 17 (step T32). When the CPU of the main control unit 20 receives the telephone number dialed from the telephone 17 in the nuisance telephone registration mode, the terminal side exchange is performed. Without connecting the telephone line 13 to the station 14, the received telephone number is stored in the memory unit 20a as nuisance telephone number data (step T33).

  As another method of registering by the user himself / herself, an incoming call can be registered as a nuisance call. FIG. 9 is a diagram showing a communication sequence for registering an incoming telephone number as a nuisance telephone number according to Embodiment 3 of the present invention.

  Referring to FIG. 9, during a call between telephone 17 and the other party telephone via telephone line 13, the user once hooks telephone 17 and disconnects the line (steps T41 and T42 in FIG. 9), and then the main control unit The CPU 20 temporarily stores the telephone number that has been received immediately before (step T43). When the user operates (for example, presses) the switch 25 (step T44), the CPU stores the telephone number of the called party, that is, the temporarily stored telephone number in the memory unit 20a as the nuisance telephone number data. Store (step T45).

  Here, the main control unit 20 of the terminal network control device 15 may have any one of the functions shown in FIGS. 7, 8, and 9, or may have two or more functions.

[Other embodiments]
The control method performed by the terminal network control device 15 shown in each flowchart in each of the above embodiments can be realized by a program. In the present embodiment, this program is stored in a computer-readable recording medium.

  In the present embodiment, as the recording medium, the memory required for the CPU of the main control unit 20 shown in FIG. 2 to read and execute the program, for example, the memory unit 20a itself may be the program medium. Although not shown, a program reading device such as a magnetic tape device and a CD-ROM (Compact Disc Read Only Memory) device is provided as an external storage device, and a magnetic tape or CD-ROM as a storage medium is inserted therein. May be a readable program medium. In any case, the stored program may be configured to be accessed and executed by the CPU, or in any case, the program is read once and the read program is stored in the memory unit of FIG. It may be a system that is loaded into a predetermined program storage area 20a and read and executed by the CPU. It is assumed that this loading program is stored in advance in a predetermined storage area of the main control unit 20.

  Here, the program medium described above is a recording medium configured to be separable from the main control unit 20 which is the main body of the information processing apparatus, and is CD-ROM / MO (Magnetic Optical Disc) / MD (Mini Disc) / DVD (Digital Optical discs such as Versatile Disc, IC (Integrated Circuit) cards (including memory cards) / optical cards, mask ROM, EPROM (Erasable and Programmable ROM), EEPROM (Electrically EPROM), flash ROM It may be a medium that carries a program in a fixed (non-temporary) manner including a semiconductor memory.

  In the present embodiment, the terminal network control device 15 may be a medium that temporarily holds the program so that the program is downloaded from various communication networks such as the telephone line 13. The download program may be stored in advance in the terminal network control device 15 main body, or may be installed in advance in the terminal network control device 15 main body from another recording medium.

  Note that the content stored in the recording medium is not limited to a program, and may be data.

(Effect of embodiment)
The telephone number of the nuisance telephone 18 is stored in the terminal network control device 15 in advance, and the incoming call from the nuisance telephone 18 can be rejected from the collation result of the telephone number stored and the stored telephone number. Thus, the delay of the terminal call operation and the battery consumption of the terminal network control device 15 and the meter 16 due to the retrying can be reduced.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 10 Communication system, 11 Center apparatus, 12 Center side switching center, 13 Telephone line, 14 Terminal side switching center, 15 Terminal network control apparatus, 16 Meter, 17 Telephone, 18 Nuisance telephone, 19 Nuisance telephone side switching center, 20 Main control Part, 20a memory part, 21 modem part, 22 office line part, 23 power supply part, 25 switch.

Claims (4)

A terminal network control device to which the first terminal is connected,
A communication unit connected to the communication line and communicating with the second terminal via the communication line;
A control unit for controlling the communication unit,
When the second terminal calls the first terminal, the communication unit transmits the second caller before receiving the call signal to the first terminal on the called side via the communication line. Receives source information that identifies the device,
The controller is
A collation unit that collates the source information received by the communication unit with predetermined terminal identification information when an incoming call is received from the second terminal;
The terminal network control device is further connected to a third terminal that makes a terminal call and performs data communication with the center device via the communication line.
The controller is
When it is determined from the result of the collation that both pieces of information match, when the third terminal makes a terminal call after the incoming call from the second terminal, the call signal received next to the caller information is In response, the communication line is line-connected, the line connection is subsequently disconnected, and the communication unit is controlled to line-connect the communication line for the terminal call following the disconnection,
When it is determined from the collation result that the two information are inconsistent and the third terminal makes a terminal call after the incoming call from the second terminal, the information received next to the source information In response to a call signal, the communication line is connected to the line, and communication between the first terminal and the second terminal is performed via the communication line without being disconnected, and during the communication, the terminal A terminal network control device that controls the communication unit to retry the line connection for calling . The controller is
A storage unit for storing the terminal identification information;
From said center apparatus, and stores the received the terminal identification information storage unit, the terminal network control apparatus according to claim 1. The controller is
A storage unit for storing the terminal identification information;
And stores the received the terminal identification information from the first terminal memory unit, the terminal network control apparatus according to claim 1 or 2. The controller is
A storage unit for storing the terminal identification information;
The terminal network control device according to claim 1 or 2 , wherein the caller information received by the communication unit is stored in a storage unit when an incoming call is received from the second terminal.

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