JP4502847B2 - Voice network abnormality detection method, voice network abnormality detection apparatus and abnormality detection system - Google Patents

Description

  The present invention relates to a voice network abnormality detection method, an abnormality detection apparatus, and an abnormality detection system for detecting an abnormality of an analog signal line connecting a private branch exchange and a voice over IP gateway.

In recent years, construction of telephone voice networks using IP networks has been actively performed. There are several ways to achieve this, but a typical example is a method of analog connection of voice over IP gateways and existing private branch exchanges using a band peripheral signal system. .
Voice over IP gateway is a device for realizing VoIP communication using existing PBX (Private Branch Exchange) and voice terminals. It can be used to convert call signals and control signals into IP packets and send them to the IP network. This is a device for restoring a call signal and a control signal from an IP packet received from the IP network side and sending it to the accommodation device side.

  While this type of voice network is inexpensive and easy to construct, the mutual interface between the voice over IP gateway and the private branch exchange is analog, so that internal and external failures of the equipment can be detected objectively. In general, a user notices an abnormal incoming / outgoing call during operation, and is recognized as a fault for the first time.

  Also, even if a failure occurs, detour settings to other lines cannot be made dynamically, so the line cannot be used until maintenance personnel rush to the site and perform recovery work, resulting in service degradation. sell.

As a technique for coping with this type of problem, a voice over IP gateway device having a function of detecting a line abnormality is disclosed in Patent Document 1, but this technique detects a line abnormality. Is integrated with the voice over IP gateway device, so it is necessary to replace the voice over IP gateway device itself in order to introduce the line abnormality detection function. Under such a situation, there is a problem in terms of cost performance for introducing new functions.
In addition, the detected abnormality is recognized only within the local area network for the premises, and the occurrence of the abnormality cannot be automatically communicated to the outside, so there is a problem that it takes time to call for repair work etc. There is.

  Further, Patent Document 2 discloses that a call control device is provided with a function for detecting the presence / absence of an incoming call signal so as to detect a line abnormality. However, the call control device itself is abnormal. Since the configuration is such that the diagnosis process is performed, the load on the call control device may increase, and the occurrence of an abnormality cannot be transmitted to the outside, which is the same as that of Patent Document 1 described above.

  Further, Patent Document 3 discloses a technique for detecting a line abnormality by using an echo request and an echo back, but this is a technique for detecting a line abnormality by periodically using an echo request or an echo back signal. Since detection is performed, the load of the voice over IP gateway device increases, and there are disadvantages that cannot be applied to a device that does not have an echo back function. It is the same as that of the above-mentioned patent document 1 and patent document 2 in that the occurrence of abnormality cannot be transmitted to the outside.

JP 2003-33104 A JP 2002-335327 A JP 2003-298660 A

  Therefore, the problem of the present invention is to improve the drawbacks of the prior art, detect a line abnormality without imposing a burden on the private branch exchange or voice over IP gateway, and use information related to the abnormality as a repair company or use It is to be able to automatically notify the person.

The voice network abnormality detection method according to the present invention achieves the above-described problem,
A voice network anomaly detection device that detects anomalies in the analog signal line connecting the private branch exchange and voice over IP gateway is installed between the private branch exchange and voice over IP gateway,
Failure information collection notification for sending a failure message according to the type of line abnormality in response to an abnormality detection signal from the voice network abnormality detection device and the voice network abnormality detection device together with the IP address of the voice over IP gateway Connect the terminal to the local area network for premises,
On the IP network connected to the voice over IP gateway and the local area network, by deploying a remote monitoring terminal for a trader that receives and displays a failure message and an IP address from the failure information collection notification terminal, It has a configuration characterized by centralized monitoring of the occurrence of failures in voice over IP gateways connected to the network and on-premises telephone exchanges.

In the above configuration, when a line abnormality occurs in the analog signal line between the private branch exchange and the voice over IP gateway, the abnormality detection device for the voice network detects this abnormality and outputs an abnormality detection signal.
Since the voice network anomaly detection device is installed between the private branch exchange and the voice over IP gateway, it can be added to the private branch exchange or voice over IP gateway. A line abnormality detection function can be provided easily and at low cost without replacing the device. Also, because the line abnormality is detected by the voice network abnormality detection device independent of the private branch exchange and voice over IP gateway, the load on the private branch exchange and voice over IP gateway increases. There is no worry.
The failure information collection / notification terminal receives the failure detection signal output from the voice network failure detection device, and sends a failure message corresponding to the type of line failure to the local area network for the premises.
The IP address of the trouble message and voice over IP gateway is further sent out on the IP network connected to the local area network and received by the vendor remote monitoring terminal on the IP network. By displaying a failure message, the person in charge of the supplier is informed that a line abnormality has occurred in the IP address described above.
As described above, since the occurrence of the line abnormality can be automatically notified to an outside contractor, it is possible to immediately start the line repair work.

  Further, an administrator terminal that receives and displays a failure message from the failure information collection notification terminal may be connected to the local area network.

  In addition to the person in charge on the supplier side, the network administrator on the premises can easily grasp the occurrence of the line abnormality.

An abnormality detection apparatus for a voice network according to the present invention is an abnormality detection apparatus for a voice network interposed between a private branch exchange and a voice over IP gateway.
A line state monitoring unit for detecting a line abnormality of an analog signal line connecting the private branch exchange and the voice over IP gateway, and an abnormality detection signal corresponding to the type of line abnormality detected by the line state monitoring unit The main control unit for outputting, the interface for connecting to the local area network for the premises, and the information transmission for sending the abnormality detection signal output from the main control unit to the local area network for the premises via the interface And a configuration characterized by comprising a portion.

In the above configuration, the line state monitoring unit detects a line abnormality of the analog signal line connecting the private branch exchange and the voice over IP gateway, and the main control unit detects the line abnormality detected by the line state monitoring unit. An abnormality detection signal corresponding to the type is output, and the information transmission unit transmits the abnormality detection signal to the local area network for the premises via the interface.
Since the voice network anomaly detection device is installed between the private branch exchange and the voice over IP gateway, it can be added to the private branch exchange or voice over IP gateway. It can be easily installed at low cost without changing the device. Also, because the line abnormality is detected by the voice network abnormality detection device independent of the private branch exchange and voice over IP gateway, the load on the private branch exchange and voice over IP gateway increases. There is no worry.

  In addition, the main controller of the voice network anomaly detection device sends a trunk close signal to the analog signal line on the premises telephone exchange side in response to the detection of the line anomaly to close the interface of the premises telephone exchange. A function may be provided.

  When such a configuration is applied, a trunk closing signal is sent from the main control unit of the voice network abnormality detecting device to the analog signal line on the private branch exchange when the line state monitoring unit detects a line abnormality. Upon receipt of the closing signal, the private branch exchange automatically closes the interface with the voice over IP gateway, allowing the continuation of line connection services using normal public telephone lines and other trunks.

  Further, the main control unit is provided with an interface closing function for sending a trunk closing signal for closing the voice over IP gateway interface to the analog signal line on the voice over IP gateway side in response to detection of a line abnormality. It may be.

  In this case, when the line status monitoring unit detects a line abnormality, a trunk closing signal is sent from the main control unit of the voice network abnormality detecting device to the analog signal line on the voice over IP gateway side, and the trunk closing signal is received. The voice over IP gateway automatically closes the interface to the private branch exchange, allowing continuous line connection services using normal public telephone lines and other trunks.

The anomaly detection system for a voice network according to the present invention achieves the above-described problem,
A line state monitoring unit that detects a line abnormality of the analog signal line connecting the private branch exchange and the voice over IP gateway, and an abnormality detection signal according to the type of line abnormality detected by the line state monitoring unit is output. A main control unit, an interface for connecting to a local area network for the premises, and an information transmission unit for sending an abnormality detection signal output from the main control unit to the local area network for the premises via the interface; An abnormality detection device for a voice network comprising:
Connected to the local area network for the premises, receives an abnormality detection signal from the abnormality detection device for the voice network, and sends a failure message according to the type of line abnormality to the IP network to which the voice over IP gateway is connected. A failure information collection notification terminal that is sent together with the IP address of the voice over IP gateway;
It has a configuration comprising a remote monitoring terminal for trader that is connected to the IP network and receives and displays a failure message and an IP address from the failure information collection and notification terminal.

In the above configuration, when a line abnormality occurs in the analog signal line between the private branch exchange and the voice over IP gateway, the line state monitoring unit of the voice network abnormality detection device performs the private telephone exchange and the voice over. An abnormality in the analog signal line connected to the IP gateway is detected, and the main controller of the abnormality detection device for voice network outputs an abnormality detection signal corresponding to the type of line abnormality detected by the line status monitoring unit. The information transmission unit of the network abnormality detection device transmits an abnormality detection signal to the local area network for the premises via the interface.
Since the line abnormality is detected by the voice network anomaly detection device independent of the private branch exchange and voice over IP gateway, there is a concern that the load on the private branch exchange and voice over IP gateway will increase. Absent.
The failure information collection / notification terminal receives the failure detection signal output from the voice network failure detection device, and sends a failure message corresponding to the type of line failure to the local area network for the premises.
The IP address of the trouble message and voice over IP gateway is further sent out on the IP network connected to the local area network and received by the vendor remote monitoring terminal on the IP network. By displaying a failure message, the person in charge of the supplier is informed that a line abnormality has occurred in the IP address described above.
As described above, since the occurrence of the line abnormality can be automatically notified to an outside contractor, it is possible to immediately start the line repair work.

  Further, an administrator terminal that receives and displays a failure message from the failure information collection notification terminal may be connected to the local area network.

  In addition to the person in charge on the supplier side, the network administrator on the premises can easily grasp the occurrence of the line abnormality.

More specifically, the failure information collection and notification terminal includes a database that stores a correspondence relationship between the type of the abnormality detection signal and the failure message,
A failure message search means for searching the database based on the abnormality detection signal received from the abnormality detection device for the voice network and reading a failure message corresponding to the abnormality detection signal;
An e-mail transmission unit that sends the failure message searched by the failure message search unit as an e-mail to the IP network may be provided.

  By sending and receiving failure messages using e-mail, it is possible to build failure information collection and notification terminals and remote monitoring terminals for vendors on ordinary personal computers and workstations. A detection system can be constructed at low cost.

  In addition, the main controller of the voice network anomaly detection device sends a trunk close signal to the analog signal line on the premises telephone exchange side in response to the detection of the line anomaly to close the interface of the premises telephone exchange. A function may be provided.

  When such a configuration is applied, a trunk closing signal is sent from the main control unit of the voice network abnormality detecting device to the analog signal line on the private branch exchange when the line state monitoring unit detects a line abnormality. Upon receipt of the closing signal, the private branch exchange automatically closes the interface with the voice over IP gateway, allowing the continuation of line connection services using normal public telephone lines and other trunks.

  In addition, a trunk closing signal is sent to the main control unit of the voice network anomaly detection device in response to the detection of the line anomaly to close the voice over IP gateway interface to the analog signal line on the voice over IP gateway side. An interface closing function may be provided.

  In this case, when the line status monitoring unit detects a line abnormality, a trunk closing signal is sent from the main control unit of the voice network abnormality detecting device to the analog signal line on the voice over IP gateway side, and the trunk closing signal is received. The voice over IP gateway automatically closes the interface to the private branch exchange, allowing continuous line connection services using normal public telephone lines and other trunks.

According to the present invention, an abnormality detection device for a voice network that detects an abnormality of an analog signal line connecting a private branch exchange and a voice over IP gateway is interposed between the private branch exchange and the voice over IP gateway. Therefore, it is possible to provide a function for detecting line anomalies without having to perform any additional work on the private telephone exchange or voice over IP gateway, or replacing these devices.
Also, because the line abnormality is detected by the voice network abnormality detection device independent of the private branch exchange and voice over IP gateway, the load on the private branch exchange and voice over IP gateway increases. There is no worry.
In addition, the failure information collection and notification terminal sends a failure message according to the type of the line abnormality to the remote monitoring terminal for the dealer via the local area network and the IP network for the line abnormality. This can be automatically communicated to an outside contractor, and it is possible to immediately start a line repair work.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing a voice network in which a voice network abnormality detection system according to an embodiment to which the voice network abnormality detection method of the present invention is applied.

  The voice network 1 includes at least a private branch exchange 3 to which an existing telephone 2 is connected, a voice over IP gateway 4, a local area network 5 for the local area, an IP network 6, and a voice over IP gateway. 4 and a router 7 for connecting the local area network 5 to the IP network 6. The telephone exchange 3 ′ is an example of another telephone exchange facing the private telephone exchange 3.

Usually, in the conventional voice network, the private branch exchange 3 and the voice over IP gateway 4 are directly connected. In this embodiment, in particular, the analog signal line 8a on the private branch exchange 3 side and the voice over IP gateway are provided. The voice network abnormality detecting device 9 is connected so as to interrupt between the analog signal line 8b on the 4th side.
The local area network 5 is connected with a failure information collection / notification terminal 10 and an administrator terminal 11. On the IP network 6, a service for repairing the private telephone exchange 3 and the voice over IP gateway 4 is undertaken. A vendor remote monitoring terminal 12 installed in the provider company is connected.

  FIG. 2 is a functional block diagram showing an outline of the configuration of the voice network abnormality detection device 9.

The voice network abnormality detection device 9 includes a control signal transmission line SS (M), a control signal reception line SR (E), a transmission line 4WS, and a reception line 4WR that constitute the analog signal line 8a on the private branch exchange 3 side. A line control unit 13a functioning as an interface between the control signal transmission line SS (M), control signal reception line SR (E), and transmission line 4WS constituting the analog signal line 8b on the voice over IP gateway 4 side. , A line control unit 13b functioning as an interface with the reception line 4WR, and a line state monitoring unit 14 for detecting a line abnormality in the analog signal lines 8a and 8b.
Further, the main control unit 15 composed of a microprocessor, the interface 16 for connecting to the local area network 5 for the premises, and the abnormality detection signal output from the main control unit 15 via the interface 16 for the local area for the premises An information transmission unit 17 for transmission to the network 5 is provided. In this embodiment, the main control unit 15 outputs a numerical value such as 01, 02, 03,... As a code as an abnormality detection signal corresponding to the type of line abnormality.

The failure information collection notification terminal 10 is constituted by a normal computer such as a personal computer or a workstation, and as shown in FIG. 3, a microprocessor 18 for arithmetic processing, a ROM 19 storing various parameters, and the like, A RAM 20 used for temporary storage of calculation data and the like, and a hard disk drive 21 for storing an operating system, various application programs, and the like are connected to the local area network 5 via an interface 22.
A keyboard 24, a monitor 25, a printer 26, and the like that function as a man-machine interface are connected to the microprocessor 18 bus via an input / output circuit 23.

  Further, the hard disk drive 21 in this embodiment stores a database 27 that stores a failure message corresponding to the type of the abnormality detection signal transmitted from the abnormality detection device 9 for voice network.

  FIG. 4 is a conceptual diagram showing an example of a correspondence relationship between data stored in the database 27. As described above, in this embodiment, a numerical code such as 01, 02, 03,... Is used as the abnormality detection signal, so that a failure message is stored in the database 27 corresponding to this numerical code. become.

  The configuration of the manager terminal 11 and the vendor remote monitoring terminal 12 is substantially the same as that of the failure information collection notification terminal 10 as shown in FIGS. Description is omitted. However, the database 27 is not required for the hard disk drive 31 of the manager terminal 11 and the hard disk drive 40 of the vendor remote monitoring terminal 12. The manager terminal 11 is connected to the local area network 5 via an interface 32, and the vendor remote monitoring terminal 12 is connected to the IP network 6 via an interface 41.

  It is assumed that a known application program required for transmission / reception and display of electronic mail is installed in each of the failure information collection notification terminal 10, the manager terminal 11, and the vendor remote monitoring terminal 12.

The voice network abnormality detection system according to the present embodiment includes a voice network abnormality detection device 9, a failure information collection notification terminal 10, a manager terminal 11, and a vendor remote monitoring terminal 12.
The voice network abnormality detection device 9 has a configuration that can be retrofitted between the conventional private branch exchange 3 and the voice over IP gateway 4, and the failure information collection notification terminal 10, The manager terminal 11 and the vendor remote monitoring terminal 12 can be configured using a normal personal computer, workstation, or the like provided on the network.

  7 to 9 are flowcharts showing an outline of the abnormality detection processing executed by the main control unit 15 of the voice network abnormality detection device 9, and FIG. 10 is a flowchart showing an outline of the operation of the private branch exchange 3. 11 is a flowchart showing an outline of a failure message transmission process executed by the microprocessor 18 of the failure information collection notification terminal 10. FIG. 12 is a flowchart of the microprocessor 28 of the manager terminal 11 and the microprocessor 37 of the vendor remote monitoring terminal 12. 5 is a flowchart showing an outline of a failure message display process executed by the process.

  Next, the overall processing operation of the voice network abnormality detection system of this embodiment will be described with reference to the flowcharts of FIGS.

  At this point, the contract between the user and the service provider has already been completed, and the voice network abnormality detection device 9 is installed between the conventional private branch exchange 3 and the voice over IP gateway 4. It is assumed that the service provider has an arrangement for repairing a line abnormality occurring around the trunk including the private branch exchange 3 and the voice over IP gateway 4.

  First, when a connection request from an existing telephone 2 installed on the premises is input to the premises telephone exchange 3, the premises telephone exchange 3 that repeatedly executes the determination processing in steps b1 to b3 in FIG. The connection request from the telephone 2 is detected (step b1), and the potential of the control signal transmission line SS (M) constituting a part of the analog signal line 8a on the private branch exchange 3 side is changed from, for example, −48V to the ground potential. Whether the connection confirmation signal from the voice over IP gateway 4 has been input to the control signal reception line SR (E) on the private branch exchange 3 side after starting the transmission of the control signal by raising (step b4) Is determined (step b5).

  When the potential of the control signal transmission line SS (M) on the private telephone exchange 3 side rises to the ground potential, the main control unit 15 of the voice network abnormality detection device 9 performs the line state in the determination process of step a1 in FIG. An increase in the potential of the control signal transmission line SS (M) constituting a part of the analog signal line 8a on the private telephone exchange 3 side is detected via the monitoring unit 14.

  Next, the main control unit 15 determines whether or not current is flowing through the line state monitoring unit 14 to the control signal reception line SR (E) that constitutes a part of the analog signal line 8b on the voice over IP gateway 4 side. Is determined (step a2).

  Here, if the determination result in step a2 is true and it is confirmed that current is flowing through the control signal reception line SR (E) on the voice over IP gateway 4 side, at least from the private telephone exchange 3 The connection request has been sent normally, and the control signal transmission line SS (M) on the private branch exchange 3 side and the control signal reception line SR (E) on the voice over IP gateway 4 side are connected normally. Becomes clear.

  If the determination result in step a2 is false and it is confirmed that no current is flowing through the control signal reception line SR (E) on the voice over IP gateway 4, the determination result in step a1 The control signal transmission line SS (M) on the private branch exchange 3 side is normal and the control signal reception line SR (E) on the voice over IP gateway 4 side is disconnected, or the voice over IP It can be determined that there is a high possibility that a failure has occurred in the interface itself on the gateway 4 side (step a7).

  Therefore, when the determination result in step a2 is false, the main control unit 15 of the abnormality detecting device 9 for the voice network 9 controls the control signal receiving line SR that constitutes a part of the analog signal line 8a on the private branch exchange 3 side. A ground signal as a trunk closing signal is sent to (E) (step a8, interface closing function), and the control signal reception line SR (E) on the voice over IP gateway 4 side is disconnected and the voice over IP gateway is connected. Code 03 which is an abnormality detection signal indicating the possibility of interface failure on the 4th side is generated, and code 03 is sent to the failure information collection and notification terminal 10 via the information transmission unit 17, the interface 16 and the local area network 5. Transmit (step a9).

  When a ground signal is sent to the control signal reception line SR (E) on the private telephone exchange 3 side in this way, the control signal reception line SR on the private telephone exchange 3 side from the voice over IP gateway 4 side. Since the connection confirmation signal is not input to (E), the determination result in step b5 in FIG. 10 is false, and the private branch exchange 3 determines that the input of the connection confirmation signal is not detected.

  As a result, the private branch exchange 3 returns to the repeated determination process in steps b1 to b3, and detects that a ground signal serving as a trunk closing signal is input from the voice network abnormality detecting device 9 (step b3). The interface between the voice over IP gateway 4 and, more specifically, the interface connected to the voice network abnormality detecting device 9 is closed (step b10). As a result, the existence of the trunk composed of the voice over IP gateway 4 and the private branch exchange 3 is ignored, and the line connection service using the ordinary public telephone line or other trunks can be continued by bypassing the trunk. It will be in an acceptable state.

  On the other hand, the code 03 transmitted from the voice network abnormality detection device 9 is received by the microprocessor 18 of the failure information collection notification terminal 10 that repeatedly executes the failure message transmission processing of FIG. 11 as one of background processing (step c1). 4), the microprocessor 18 functioning as a failure message search means accesses the hard disk drive 21 and searches the database 27 as shown in FIG. 4 based on the code 03 which is an abnormality detection signal, and the failure message corresponding to the code 03. The microprocessor 18 functioning as an e-mail transmission means reads this message as the text and the sender's address as the IP address of the voice over IP gateway 4. , Use the destination IP address An electronic mail having the IP address of the remote monitoring terminal 12 and the IP address of the administrator terminal 11 is sent to the local area network 5 and further to the IP network 6 (step c2).

  Then, the electronic mail is received by the microprocessor 28 of the manager terminal 11 and the microprocessor 37 of the remote monitoring terminal 12 for the company that repeatedly executes the fault message display process of FIG. 12 as one of the background processes (step d1). ), Information for identifying the location where the failure has occurred, along with a failure message such as “There is a possibility of disconnection of the control line” on the monitor 35 of the manager terminal 11 or the monitor 44 of the remote monitoring terminal 12 for vendors, for example, The IP address itself of the voice over IP gateway 4 and the address stored corresponding to the IP address are displayed (step d2). However, when an address corresponding to the IP address is displayed as information for specifying the location where the failure has occurred, a hard disk drive 40 of the vendor remote monitoring terminal 12 is stored in advance as a database storing the correspondence between the IP address and the address. It is necessary to install in.

  On the other hand, when the determination result in step a2 in FIG. 7 is true, that is, the connection request is normally sent from the private branch exchange 3, and one of the analog signal lines 8a on the private branch exchange 3 side is transmitted. It is confirmed that the control signal transmission line SS (M) constituting the unit and the control signal receiving line SR (E) constituting a part of the analog signal line 8b on the voice over IP gateway 4 side are normally connected. In this case, the main control unit 15 of the voice network abnormality detection device 9 further controls the control signal constituting part of the analog signal line 8b on the voice over IP gateway 4 side via the line state monitoring unit 14. It is determined whether or not a connection confirmation signal appears on the transmission line SS (M) (step a3).

  Here, if the determination result in step a3 is true and it is confirmed that the connection confirmation signal appears on the control signal transmission line SS (M) on the voice over IP gateway 4, the voice over IP It becomes clear that the gateway 4 itself and the voice over IP gateway 4 side control signal transmission line SS (M) are in a normal state.

  In this case, the main controller 15 of the voice network anomaly detection device 9 uses the line controllers 13a and 13b as pre-processing for transmitting the selection signal sent from the private branch exchange 3 to the voice over IP gateway 4. By operating, the circuit in the voice network abnormality detection device 9 is directly connected, the transmission line 4WS on the private telephone exchange 3 side, the reception line 4WR on the voice over IP gateway 4 side, and the reception on the private telephone exchange 3 side. The line 4WR and each voice line 4WS on the voice over IP gateway 4 side are connected (step a4), and the standby state is entered (step a5).

  If the determination result in step a3 is false and it is confirmed that the connection confirmation signal does not appear on the control signal transmission line SS (M) on the voice over IP gateway 4, the steps a1 and a2 From the determination result, the control signal transmission line SS (M) on the private telephone exchange 3 side and the control signal reception line SR (E) on the voice over IP gateway 4 side are normal, and the voice over IP gateway 4 side It can be determined that there is a high possibility that the control signal transmission line SS (M) is disconnected or that the interface itself on the voice over IP gateway 4 side is defective (step a10).

  Therefore, when the determination result in step a3 is false, the main control unit 15 of the abnormality detecting device 9 for voice network 9 controls the control signal receiving line SR that constitutes a part of the analog signal line 8a on the private branch exchange 3 side. In response to (E), a ground signal serving as a trunk closing signal is sent (step a11, interface closing function), and the possibility of disconnection of the control signal transmission line SS (M) on the voice over IP gateway 4 side and voice A code 02 which is an abnormality detection signal indicating the possibility of an interface failure on the over IP gateway 4 side is generated, and the failure information collection and notification terminal 10 is transmitted to the failure information collection notification terminal 10 via the information transmission unit 17, the interface 16 and the local area network 5. Code 02 is transmitted (step a12).

  When a ground signal is sent to the control signal reception line SR (E) on the private telephone exchange 3 side in this way, the control signal reception line SR on the private telephone exchange 3 side from the voice over IP gateway 4 side. Since the connection confirmation signal is not input to (E), the determination result in step b5 in FIG. 10 is false, and the private branch exchange 3 determines that the input of the connection confirmation signal is not detected.

  As a result, the private branch exchange 3 returns to the repeated determination process in steps b1 to b3, and detects that a ground signal serving as a trunk closing signal is input from the voice network abnormality detecting device 9 (step b3). The interface between the voice over IP gateway 4 and, more specifically, the interface connected to the voice network abnormality detecting device 9 is closed (step b10). As a result, the existence of the trunk composed of the voice over IP gateway 4 and the private branch exchange 3 is ignored, and the line connection service using the ordinary public telephone line or other trunks can be continued by bypassing the trunk. It will be in an acceptable state.

  On the other hand, the code 02 sent from the voice network abnormality detection device 9 is received by the microprocessor 18 of the failure information collection notification terminal 10 that repeatedly executes the failure message transmission processing of FIG. 11 as one of background processing (step c1). 4), the microprocessor 18 functioning as a failure message search means accesses the hard disk drive 21 and searches the database 27 as shown in FIG. 4 based on the code 02 which is an abnormality detection signal, and the failure message corresponding to the code 02. "The voice over IP gateway does not start" is read, and the microprocessor 18 functioning as an e-mail transmission means uses this message as the body text and the sender's address as the IP address of the voice over IP gateway 4. , Destination IP An e-mail with the IP address of the remote monitoring terminal 12 for business and the IP address of the manager terminal 11 is sent to the local area network 5 and further to the IP network 6 (step c2).

  Then, the electronic mail is received by the microprocessor 28 of the manager terminal 11 and the microprocessor 37 of the remote monitoring terminal 12 for the company that repeatedly executes the fault message display process of FIG. 12 as one of the background processes (step d1). ), Information identifying the location where the failure occurred on the monitor 35 of the manager terminal 11 or the monitor 44 of the remote monitoring terminal 12 for the vendor together with a failure message such as “Voice over IP gateway does not start”, for example, The IP address itself of the voice over IP gateway 4 or the address stored in correspondence with the IP address is displayed (step d2).

  On the other hand, when the determination result in step a3 in FIG. 7 is true, that is, the connection request is normally sent from the private branch exchange 3, and one of the analog signal lines 8a on the private branch exchange 3 side is transmitted. It is clear that the control signal transmission line SS (M) constituting the part and the control signal receiving line SR (E) constituting a part of the analog signal line 8b on the voice over IP gateway 4 side are normally connected. When the voice over IP gateway 4 itself and the control signal transmission line SS (M) constituting a part of the analog signal line 8b on the voice over IP gateway 4 side are confirmed to be normal. In step b5 of FIG. 10, the determination result is true, and the private branch exchange 3 confirms that the connection confirmation signal is returned from the voice over IP gateway 4 and It starts to transmit the selection signal to the over-IP gateway 4 (step b6).

  This selection signal transmission method includes a method in which the control signal transmission line SS (M) constituting a part of the analog signal line 8a on the private telephone exchange 3 side is intermittently connected (dial pulse method), a transmission There are two methods (PB method) for sending a push button signal to the line 4WS, either of which may be used.

  As described above, at this stage, since the circuit in the voice network abnormality detecting device 9 is already in the direct connection state, the selection signal sent from the private telephone exchange 3 is immediately transmitted via the voice network abnormality detecting device 9. The voice over IP gateway 4 is transmitted to the voice over IP gateway 4, and the voice over IP gateway 4 determines the IP address of the opposite telephone exchange (for example, the private telephone exchange 3 ′) based on the selection signal. A selection signal is transmitted to the opposite telephone exchange (for example, private telephone exchange 3 ′).

  This selection signal is received by the opposite telephone exchange (for example, the private telephone exchange 3 ′) having the same function as the private telephone exchange 3 (see step b2 in FIG. 10), and the opposite telephone exchange. (For example, the private branch exchange 3 ′) analyzes the selection signal and calls an extension telephone under management (see step b7). When the corresponding extension telephone answers (step b8), A call with the existing telephone 2 is started (see step b9).

  The transmission of the signal from the opposite telephone exchange (for example, the private telephone exchange 3 ') to the private telephone exchange 3 is the same as described above except that the direction of the signal flow is reversed. Description is omitted.

  Finally, when the call between the extension telephone and the existing telephone 2 is finished, the main control unit 15 of the voice network abnormality detecting device 9 detects the end of the call in the determination process in step a5 of FIG. By operating the control units 13a and 13b, the internal circuit of the voice network abnormality detecting device 9 is opened (step a6 in FIG. 7), and the initial standby state for waiting for a new connection request from the private branch exchange 3 is restored. To do.

  Here, the private telephone exchange 3 is closed by sending a ground signal as a trunk closing signal to the analog signal line 8a on the private telephone exchange 3 side from the abnormality detecting device 9 for the voice network, and the voice over IP gateway 4 is closed. The existence of a trunk composed of the private branch exchange 3 is ignored, and the trunk is bypassed to allow the continuation of a line connection service using a normal public telephone line or other trunks. The same effect can be obtained by closing the voice over IP gateway 4 by sending a ground signal as a trunk closing signal from the network abnormality detection device 9 to the analog signal line 8a on the private branch exchange 3 side. It is.

As described above, in this embodiment, the IP address, address, etc. that specify the private branch exchange 3 and voice over IP gateway 4 where the line abnormality has occurred and the type of failure are installed in the service provider that undertakes the repair. Since it is automatically transmitted and displayed on the remote monitoring terminal 12 for the trader, it is possible to immediately start the line repair work, and at the same time, similar information is also displayed on the manager terminal 11. In addition, the on-site administrator can easily grasp the occurrence of a line abnormality and the type of abnormality.
Also, since the voice network abnormality detection device 9 is installed between the private telephone exchange 3 and the voice over IP gateway 4, it is added to the private telephone exchange 3 and the voice over IP gateway 4. It is possible to realize a line abnormality detection function easily and at low cost without performing any work or replacing these devices.
In addition, since the abnormality of the line is detected by the abnormality detecting device 9 for the voice network independent of the private telephone exchange 3 and the voice over IP gateway 4, the private telephone exchange 3 and the voice over IP gateway 4 are used. There is no worry that the load of the increase.
Since the failure message is transmitted / received by using e-mail, the failure information collection / notification terminal 10, the manager terminal 11, and the vendor remote monitoring terminal 12 are connected to a normal personal computer, workstation or the like. It is possible to construct a voice network anomaly detection system at low cost.

It is the block diagram which simplified and showed about the voice network which deployed the abnormality detection system for voice networks of one Embodiment to which the abnormality detection method of the voice network in this invention was applied. It is the functional block diagram shown about the outline of the structure of the abnormality detection apparatus for voice networks which comprises a part of abnormality detection system for voice networks of the embodiment. It is the functional block diagram shown about the outline of the structure of the failure information collection notification terminal which comprises a part of abnormality detection system for voice networks of the embodiment. It is the conceptual diagram which illustrated the database stored in the failure information collection notification terminal of the embodiment. It is the functional block diagram shown about the outline of the structure of the terminal for managers which comprises a part of abnormality detection system for voice networks of the embodiment. It is the functional block diagram shown about the outline of the structure of the remote monitoring terminal for traders which comprises a part of abnormality detection system for voice networks of the embodiment. It is the flowchart which showed the outline of the abnormality detection process performed by the main control part of the abnormality detection apparatus for voice networks of the embodiment. It is a continuation of the flowchart which showed the outline of the abnormality detection process. It is a continuation of the flowchart which showed the outline of the abnormality detection process. It is the flowchart which showed the outline | summary of operation | movement of the telephone switch for private use of the embodiment. 6 is a flowchart showing an outline of a failure message transmission process executed by the microprocessor of the failure information collection notification terminal of the embodiment. It is the flowchart which showed the outline of the failure message display process performed by the microprocessor of the manager terminal of the embodiment and the remote monitoring terminal microprocessor for traders of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Voice network 2 Telephone 3, 3 'Private branch exchange 4 Voice over IP gateway 5 Local area network 6 IP network 7 Router 8a, 8b Analog signal line 9 Abnormality detection apparatus 10 for voice networks Fault information collection notification terminal 11 Administrator Terminal 12 Commercial remote monitoring terminals 13a and 13b Line control unit 14 Line state monitoring unit 15 Main control unit 16 comprising microprocessor 16 Interface 17 Information transmission unit 18 Microprocessor (failure message search means, e-mail transmission means)
19 ROM
20 RAM
21 Hard Disk Drive 22 Interface 23 Input / Output Circuit 24 Keyboard 25 Monitor 26 Printer 27 Database 28 Microprocessor 29 ROM
30 RAM
31 Hard Disk Drive 32 Interface 33 Input / Output Circuit 34 Keyboard 35 Monitor 36 Printer 37 Microprocessor 38 ROM
39 RAM
40 Hard Disk Drive 41 Interface 42 Input / Output Circuit 43 Keyboard 44 Monitor 45 Printer
SS (M) control signal transmission line
SR (E) Control signal receiving line
4WS transmission line
4WR telephone line

Claims (10)

An abnormality detection device for a voice network that detects a line abnormality of an analog signal line connecting a private telephone exchange and a voice over IP gateway is interposed between the private telephone exchange and the voice over IP gateway,
Failure information collection notification for sending a failure message according to the type of line abnormality in response to an abnormality detection signal from the voice network abnormality detection device and the voice network abnormality detection device together with the IP address of the voice over IP gateway Connect the terminal to the local area network for premises,
On the IP network connected to the voice over IP gateway and the local area network, by deploying a remote monitoring terminal for a trader that receives and displays a failure message and an IP address from the failure information collection notification terminal, A voice network anomaly detection method that centrally monitors the occurrence of failures in voice over IP gateways connected to IP networks and on-site telephone exchanges.   The voice network abnormality detection method according to claim 1, wherein an administrator terminal that receives and displays a failure message from the failure information collection notification terminal is connected to the local area network. An anomaly detection device for a voice network interposed between a private branch exchange and a voice over IP gateway,
A line state monitoring unit for detecting a line abnormality of an analog signal line connecting the private branch exchange and the voice over IP gateway, and an abnormality detection signal corresponding to the type of line abnormality detected by the line state monitoring unit The main control unit for outputting, the interface for connecting to the local area network for the premises, and the information transmission for sending the abnormality detection signal output from the main control unit to the local area network for the premises via the interface An abnormality detection device for a voice network, comprising:   The main control unit is provided with an interface closing function for sending a trunk closing signal for closing the interface of the private telephone exchange to the analog signal line on the private telephone exchange side in response to detection of a line abnormality. The abnormality detection device for a voice network according to claim 3, wherein:   The main control unit is provided with an interface closing function for sending a trunk closing signal for closing the voice over IP gateway interface to the analog signal line on the voice over IP gateway side in response to detection of a line abnormality. The abnormality detection device for a voice network according to claim 3. A line state monitoring unit that detects a line abnormality of the analog signal line connecting the private branch exchange and the voice over IP gateway, and an abnormality detection signal according to the type of line abnormality detected by the line state monitoring unit is output. A main control unit, an interface for connecting to a local area network for the premises, and an information transmission unit for sending an abnormality detection signal output from the main control unit to the local area network for the premises via the interface; An abnormality detection device for a voice network comprising:
Connected to the local area network for the premises, receives an abnormality detection signal from the abnormality detection device for the voice network, and sends a failure message according to the type of line abnormality to the IP network to which the voice over IP gateway is connected. A failure information collection notification terminal that is sent together with the IP address of the voice over IP gateway;
An abnormality detection system for a voice network, which is connected to the IP network and includes a remote monitoring terminal for a trader that receives and displays a failure message and an IP address from the failure information collection notification terminal.   7. The voice network abnormality detection system according to claim 6, wherein an administrator terminal that receives and displays a failure message from the failure information collection notification terminal is connected to the local area network. The failure information collection notification terminal is a database that stores the correspondence between the type of abnormality detection signal and the failure message;
A failure message search means for searching the database based on the abnormality detection signal received from the abnormality detection device for the voice network and reading a failure message corresponding to the abnormality detection signal;
8. An abnormality detection system for a voice network according to claim 6 or 7, further comprising: an e-mail transmission unit that transmits the failure message searched by the failure message search unit as an e-mail to the IP network. .   An interface closing function for sending a trunk closing signal for closing an interface of the private branch exchange to the analog signal line on the private branch exchange in response to detection of a line abnormality is a main control of the voice network abnormality detecting device. 9. The abnormality detection system for a voice network according to claim 6, wherein the abnormality detection system is provided in a section.   An interface closing function for sending a trunk closing signal for closing the interface of the voice over IP gateway to the analog signal line on the voice over IP gateway side in response to detection of a line abnormality is an abnormality detecting device for the voice network. 9. The abnormality detection system for a voice network according to claim 6, wherein the abnormality detection system is provided in a main control unit.

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