JP4926104B2 - Audio monitoring system, audio monitoring apparatus, audio monitoring method, and computer program - Google Patents

Description

  The present invention relates to an IP (Internet Protocol) telephone voice monitoring system, a voice monitoring apparatus, a voice monitoring method, and a computer program.

Conventionally, in order to monitor the voice of an IP phone, a mirror port is set from a maintenance port such as a SW (switch) in which the IP phone to be monitored is accommodated. IP packets (voice packets) were collected and monitored.
On the other hand, the voice device is monitored by installing the capture device on the network, storing the voice packets of the IP phone to be monitored in the capture device, and playing back the stored voice packets when necessary. There is a technique (see, for example, Patent Document 1).
Japanese Patent No. 3639269

  In order to confirm the voice quality of an IP telephone, it is necessary for a communication carrier to monitor the voice of each customer who provides services over a wide area such as the whole country. However, in the case of the above-described technique in which a mirror port is set in a SW in which an IP phone to be monitored is accommodated and voice packets are collected, a certain level of skill for setting the mirror port is required. In addition, the maintenance person must go directly to the installation locations of the SWs nationwide to set the mirror port, and it is necessary to reproduce the voice packet copied by this setting. Therefore, the burden on the telecommunications carrier becomes great in terms of human resources, cost, operation, and the like. Considering the services developed nationwide, even in the case of the technology of Patent Document 1, the voice information flowing through thousands of SWs is recorded, and the recorded voice information is captured and stored as necessary. The load in the system and network for doing so increases. In addition, since it is necessary to arrange a large number of agents for collecting voice packets in the network, the load is large in terms of operation and cost.

  The present invention has been made to solve the above problem, and its purpose is to provide a single point even when the voice quality of an IP telephone deployed over a wide area using a large number of NW devices is confirmed. Voice monitoring system, voice monitoring apparatus, voice monitoring method, and computer program capable of monitoring the voice of the target IP phone from the network and reducing the human resources, cost, and operational burden associated with the monitoring Is to provide.

In order to solve the above-described problems, the present invention is a voice monitoring system that includes a voice monitoring device that is connected to a network and monitors the voice of an IP phone, and a network device that configures the network and routes packets. The voice monitoring device corresponds to the user identification information, the address information of the network device accommodating the user's IP telephone device specified by the user identification information, and the address information of the user's IP telephone device. A storage unit for storing a query table in which user identification information, query identification information, and maintenance person identification information are associated with each other, a maintenance person identification information, and a voice monitoring target user receiving an input of user identification information, the user A user accommodation information search function unit that reads out the address information of the network device corresponding to the specific information and the address information of the IP telephone device from the user information table, and the address of the network device read out by the user accommodation information search function unit As a destination, and a voice packet copy and transfer instruction and the IP telephone device address information read by the user accommodation information search function unit are transmitted , and new inquiry identification information is generated and stored in the inquiry table. and the user identification information, and the inquiry identification information, and the maintenance identification information and a network device control function unit for writing in correspondence with a capsule restoring function unit for extracting the audio packet from the packet received from the network device, wherein Extracted by the capsule restoration function The IP telephone device address information is acquired from the voice packet, and the user identification information corresponding to the acquired IP telephone device address information is read from the user information table, and from the inquiry table corresponding to the read user identification information. A storage function unit that associates the acquired inquiry identification information with the extracted voice packet and writes it in the storage unit, and receives the search information, and the inquiry identification corresponding to the maintenance person identification information indicated by the search information Information is obtained from the inquiry table, a voice packet corresponding to the obtained inquiry identification information is read from the storage unit, and a playback function unit for playing back voice data in the read voice packet is provided. Routing packets received from a device and sending them to another device A routing unit; an instruction receiving unit that receives an instruction to copy and transfer a voice packet from the voice monitoring device; and an address information of an IP telephone device subject to voice monitoring; and a packet received by the routing unit includes voice data When it is a set voice packet and the address information of the IP telephone apparatus received by the instruction receiving unit is set, it is duplicated by the packet duplicating function unit that duplicates the voice packet and the packet duplicating function unit. And a capsule transfer function unit that encapsulates the packet and transfers the packet to a voice monitoring device.

  In addition, the present invention is the voice monitoring system described above, wherein the address information of the IP telephone device subject to voice monitoring is an IP address.

  Also, the present invention is the voice monitoring system described above, wherein the address information of the IP telephone device subject to voice monitoring is a VLAN-ID.

  Also, the present invention is the voice monitoring system described above, wherein the address information of the voice monitoring target IP telephone device is an IP address and a port number in a UDP packet header.

  Also, the present invention is the voice monitoring system described above, wherein the address information of the IP telephone device subject to voice monitoring is an IP address in an IP packet header and a port number in a UDP packet header. And

  Further, the present invention is the voice monitoring system described above, wherein the address information of the IP telephone device is acquired from the voice packet extracted by the capsule restoration function unit, and the user specifying information corresponding to the acquired IP telephone device Is further stored in the storage unit in association with the extracted voice packet and the playback function unit is configured to specify the user specified for playback. Voice packets corresponding to the information are read from the storage unit and reproduced.

Further, the present invention is the voice monitoring device in a voice monitoring system comprising a voice monitoring device connected to a network and monitoring the voice of an IP phone, and a network device that configures the network and routes packets, A user information table indicating information associating user identification information, address information of a network device accommodating the user's IP telephone device identified by the user identification information, and address information of the user's IP telephone device Storage unit for storing an inquiry table in which user identification information, inquiry identification information, and maintenance person identification information are associated with each other, and input of maintenance person identification information and user identification information of a voice monitoring target user And corresponding to the user specific information A user accommodation information search function unit that reads out the address information of the network device and the address information of the IP telephone device from the user information table, and the address of the network device read out by the user accommodation information search function unit as a destination. A packet duplication and transfer instruction and the IP telephone device address information read out by the user accommodation information search function unit are transmitted , new inquiry identification information is generated, and the user identification information The address information of the IP telephone device is set from the network device control function unit that writes the inquiry identification information and the maintenance personnel identification information in association with each other, and the network device that has transmitted the voice packet copy and transfer instruction. Replicated on the network device Receiving a packet that encapsulates voice packets, and the capsule restoring function unit for extracting the audio packet from the received packet, it obtains the address information of the IP telephone apparatus from the audio packet extracted by the capsule restoration function unit, further The user identification information corresponding to the acquired IP telephone device address information is read from the user information table, the inquiry identification information acquired from the inquiry table corresponding to the read user identification information, and the extracted voice packet Is stored in the storage unit and the search information is input, the inquiry identification information corresponding to the maintenance person identification information indicated by the search information is acquired from the inquiry table, and the acquired inquiry identification information is included in the acquired inquiry identification information. Read the corresponding voice packet from the storage unit, A voice monitoring device comprising: a playback function unit for playing back voice data in a protruding voice packet.

In order to solve the above-described problems, the present invention relates to a voice monitoring device that is connected to a network and monitors the voice of an IP telephone, and another device that configures the network and routes packets received from an external device. A voice monitoring method used in a voice monitoring system comprising a network device for transmitting to a user, wherein the voice monitoring device contains user identification information and a user IP telephone device identified by the user identification information Stores a user information table indicating information in which the address information of the network device is associated with the address information of the IP telephone device of the user, and inquires in which the user identification information, the inquiry identification information, and the maintenance person identification information are associated with each other includes a storage unit for storing a table, the In voice monitoring device, accommodation information retrieval function unit, and the maintenance identification information, receives the user identification information of the audio monitored user, and the address information of the network device corresponding to the user identification information, IP telephone apparatus And the network device control function unit uses the address of the network device read out by the user accommodation information search function unit as a destination to copy and transfer voice packets, and the user. The IP telephone device address information read out by the accommodation information search function unit is transmitted , new inquiry identification information is generated, and the user specifying information, the inquiry identification information, and the maintenance person are stored in the inquiry table. writing in association with identification information, the networks In the network device, the instruction receiving unit receives from the voice monitoring device an instruction to copy and transfer the voice packet and the address information of the IP telephone device to be monitored, and the packet replication function unit receives from the external device. If the received packet is a voice packet in which voice data is set and the address information of the IP telephone device received by the instruction receiving unit is set, the voice packet is copied and the encapsulated transfer function unit Encapsulating the packet duplicated by the packet duplicating function unit and transferring the encapsulated packet to the voice monitoring device. In the voice monitoring device, the capsule restoration function unit extracts the voice packet from the packet received from the network device, and stores it. The voice packet extracted by the capsule restoration function unit. IP address information of the IP telephone device is acquired from the user information, and user identification information corresponding to the acquired IP telephone device address information is read from the user information table and acquired from the inquiry table corresponding to the read user identification information. The inquiry identification information and the extracted voice packet are associated and written to the storage unit, the reproduction function unit receives the input of the search information, and the inquiry identification corresponding to the maintenance person identification information indicated by the search information A voice monitoring method characterized in that information is acquired from an inquiry table, a voice packet corresponding to the acquired inquiry identification information is read from the storage unit , and voice data in the read voice packet is reproduced.

In order to solve the above-mentioned problems, the present invention provides a voice monitoring system comprising: a voice monitoring device that is connected to a network and monitors the voice of an IP phone; and a network device that configures the network and routes packets. The computer used for the voice monitoring device includes user identification information, address information of a network device accommodating the user's IP telephone device identified by the user identification information, and address information of the user's IP telephone device. A user information table indicating the associated information is stored, and a storage unit for storing an inquiry table in which user identification information, inquiry identification information, and maintenance person identification information are associated with each other , maintenance person identification information, and voice monitoring target user specific information and the user's The user accommodation information search function unit that reads out the address information of the network device corresponding to the user identification information and the address information of the IP telephone device from the user information table and the user accommodation information search function unit. The network device address is used as a destination, voice packet duplication and transfer instructions and the IP telephone device address information read out by the user accommodation information search function unit are transmitted , and new inquiry identification information is generated. A network device control function unit that writes the user identification information, the inquiry identification information, and the maintenance person identification information in association with each other in the inquiry table, from the network device that has transmitted a voice packet copy and transfer instruction, IP phone device address information is set and The voice packets are replicated in the network device receiving the encapsulated packet, the received capsule restoring function unit for extracting the audio packet from the packet, the address information of the capsule IP telephone apparatus from the audio packet extracted by the restoring function unit Further, the user identification information corresponding to the acquired IP telephone device address information is read from the user information table, the inquiry identification information acquired from the inquiry table corresponding to the read user identification information, and The storage function unit that associates with the extracted voice packet and writes to the storage unit, receives search information, acquires the query identification information corresponding to the maintenance person identification information indicated by the search information from the query table, and acquires Voice packet corresponding to inquiry identification information The computer program is configured to function as a playback function unit that reads a packet from the storage unit and plays back voice data in the read voice packet.

  According to the present invention, even when an IP phone is accommodated and a large number of SWs constituting an IP network are installed in a wide range, when monitoring voice packets for an arbitrary IP phone, It is possible to instruct and collect voice packet duplication and transfer from a single location by a user's telephone number or the like. Therefore, it is possible to realize voice monitoring of IP telephones that are less burdened on systems and networks and less burdensome on human resources and costs for IP telephone services deployed nationwide.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an overall configuration diagram of a voice monitoring system according to an embodiment of the present invention. In the figure, a network N, which is an IP network, is connected to a voice monitoring device 1 and a call control device 2, and an NW (network) device 3 constituting the network N accommodates a user's IP telephone device. Here, the user's IP telephone apparatus will be described as being configured by a telephone terminal 5 and a VoIP-TA (Voice over IP Terminal Adapter) 4, but a VoIP router may be used instead of VoIP-TA. The NW device 3 is, for example, an IP router or an IP switch. In the figure, only one NW device 3 is illustrated, but a plurality of NW devices 3 are installed. The call control device 2 is a SIP server that performs call control of an IP telephone using SIP (Session Initiation Protocol).

  In the above configuration, the voice monitoring device 1 instructs the NW device 3 that accommodates the VoIP-TA 4 to which the user's telephone terminal 5 is connected to copy and transfer a voice packet for the call of the voice monitoring target user. When the calling telephone terminal 5 makes a call, an SIP signal, which is a call control signal for an IP telephone, is transmitted to the call control device 2 and call control with the called telephone terminal 5 is performed. After the call is established, the voice packet between the caller terminal 5 and the callee terminal 5 is received and received by the same NW device 3 by the RTP (Real-Time Transport Protocol) signal. Is returned by the NW device 3, and when the incoming / outgoing VoIP-TA 4 is accommodated in a different NW device 3, it is transmitted / received via the NW device 3 and the network N. The NW device 3 copies the RTP packet destined for the voice monitoring target user as the destination or transmission source, encapsulates it, and transfers it to the voice monitoring device 1. The voice monitoring device 1 restores and reproduces the RTP packet from the received transfer packet.

FIG. 2 is a block diagram showing an internal configuration of the voice monitoring apparatus 1, and only functional blocks related to the present invention are extracted and shown.
The voice monitoring device 1 can be realized by a computer device such as a server, for example, and includes a communication unit 11, a storage unit 12, an input unit 13, a user accommodation information search function unit 14, an NW device control function unit 15, and a capsule restoration function. Unit 16, RTP storage function unit 17, playback function unit 18, and output unit 19.

  The communication unit 11 transmits and receives data via the network N. The input unit 13 is a keyboard, a mouse, a touch pad, or the like for a user to input information. The output unit 19 is, for example, an audio output device such as a speaker or an image display device such as a display. The storage unit 12 stores various data such as a user information table, an inquiry table, and an acquired RTP data table. The user information table indicates information that associates a telephone number as information for identifying each user, an address of VoIP-TA4, and an address of NW device 3 that accommodates the VoIP-TA4. The inquiry table indicates information such as a telephone number designated as a voice monitoring target and a time when voice monitoring is inquired. The acquired RTP data table indicates information such as a telephone number to be monitored, an RTP packet acquisition start time, an acquisition end time, a storage location of the acquired RTP packet, and the like for a call of the telephone number.

  The user accommodation information search function unit 14 refers to the user information table, the monitoring target address that is the address of the VoIP-TA4 corresponding to the telephone number of the voice monitoring target user, and the NW device 3 that accommodates the VoIP-TA4. The accommodated NW device address which is an address is acquired. The NW device control function unit 15 notifies the monitoring target address to the NW device 3 specified by the accommodated NW device address, and instructs the replication and transfer of the RTP packet in which the notified monitoring target address is set as the destination or the transmission source. . Further, the NW device control function unit 15 updates the inquiry table. The capsule restoration function unit 16 restores the encapsulated RTP packet from the transfer packet received from the NW device 3. The RTP accumulation function unit 17 writes the RTP packet restored by the capsule restoration function unit 16 into the storage unit 12 and updates the acquired RTP data table. The playback function unit 18 refers to the acquired RTP data table, reads the RTP packet of the voice monitoring target user instructed as the playback target, and causes the output unit 19 to output the voice based on the voice data in the RTP packet. .

FIG. 3 is a block diagram showing an internal configuration of the NW device 3, and only functional blocks related to the present invention are extracted and shown.
The NW device 3 includes a routing unit 31, a storage unit 32, an instruction receiving unit 33, an RTP packet duplication function unit 34, and an encapsulation transfer function unit 35. The routing unit 31 transfers the received communication packet to another device according to the destination address. The instruction receiving unit 33 writes the monitoring target address received from the voice monitoring device 1 with the NW device 3 as a destination in the storage unit 32. When the communication packet received and transferred by the routing unit 31 is an RTP packet whose destination is a monitoring target address or a transmission source, the RTP packet duplication function unit 34 duplicates the RTP packet. The encapsulation transfer function unit 35 generates an IP packet that encapsulates the RTP packet replicated by the RTP packet replication function unit 34 and transmits the IP packet to the voice monitoring device 1.

  FIG. 4 is a diagram illustrating a data configuration example of the user information table stored in the storage unit 12 of the voice monitoring device 1, and the setting value is a dummy content. In the figure, the user information table includes a user telephone number, user accommodation address information indicating the address of the VoIP-TA 4 that accommodates the telephone terminal 5 of the user of the telephone number, and the NW device 3 that accommodates the VoIP-TA 4. The address of the accommodated NW device indicating the address of the telephone, the terminal address information of the telephone terminal 5 accommodated in the VoIP-TA4, and the SIP-ID that identifies the call control device 2 that performs call control of the VoIP-TA4 It consists of records. If the telephone terminal 5 does not have an IP address, such as a general fixed telephone, the terminal address information of the telephone terminal 5 is not set.

  The user accommodation address information includes, for example, (i) IP address, (ii) VLAN (Virtual Local Area Network) -ID (MAC (Media Access Control) packet level), (iii) IP address + port number (UDP (User Datagram protocol) packet header), (iv) IP address (IP packet header) + port number (UDP packet header), etc., but in the same figure, (iii) IP address + port number (UDP packet header) ) Pattern.

  FIG. 5 is a diagram illustrating a data configuration example of the inquiry table stored in the storage unit 12 of the voice monitoring device 1, and the setting value is a dummy content. In the figure, the inquiry table shows the telephone number of the user instructed as a voice monitoring target by the inquiry operation, the time when the inquiry operation was performed, the inquiry ID for specifying the inquiry operation, and the inquiry operation. It consists of a record consisting of operation user information that identifies the maintenance person.

  FIG. 6 is a diagram illustrating a data configuration example of the acquired RTP data table stored in the storage unit 12 of the voice monitoring device 1, and the setting value is a dummy content. In the figure, the acquired RTP data table records the telephone number of the monitoring target user, the inquiry ID corresponding to the telephone number, the acquisition start time and acquisition end time of the RTP packet of the user, and the restored RTP packet. It is composed of records composed of information indicating the storage location of the RTP file being stored.

FIG. 7 is a diagram showing a processing flow in the voice monitoring system.
In the figure, the maintenance person inputs his / her ID through the input unit 13 of the voice monitoring apparatus 1 and further inputs a voice monitoring instruction and a telephone number of the voice monitoring target user. When receiving the voice monitoring instruction and the telephone number of the voice monitoring target user, the user accommodation information search function unit 14 of the voice monitoring device 1 searches the user information table in the storage unit 12 using the telephone number as a key. Then, the user accommodation address and the accommodation NW device address are read from the record specified as a result of the search (step S102). In the user information table, an ID for identifying the NW device 3 is set instead of the accommodated NW device address, and an address corresponding to the ID of the NW device 3 in the record identified as a result of the search of the user information table is set. The ID of the NW device 3 and the address of the NW device 3 may be read out from a table indicating information.

  The NW device control function unit 15 sends the RTP replication and transfer request in which the user accommodation address read by the user accommodation information search function unit 14 is set as the monitoring target address, and the accommodation NW device address read by the user accommodation information search function unit 14. It transmits to the NW apparatus 3 as a destination (step S103). When the NW device control function unit 15 generates a new inquiry ID, the telephone number of the voice monitoring target user, the time when the voice monitoring instruction is input, the generated inquiry ID, and the maintenance person ID Add a record consisting of. When receiving the RTP duplication / transfer request from the voice monitoring device 1, the instruction receiving unit 33 of the NW device 3 writes the monitoring target address set in the RTP duplication / transfer request in the storage unit 32.

  When the routing unit 31 of the NW device 3 receives an RTP packet from another device, the RTP packet duplication function unit 34 displays the monitoring target address in which the destination or transmission source address of the RTP packet is stored in the storage unit 32 To determine whether or not. If they match, the RTP packet duplication function unit 34 duplicates the RTP packet (step S201), and the routing unit 31 transfers the received RTP packet as usual. The encapsulated transfer function unit 35 encapsulates the RTP packet copied by the RTP packet copy function unit 34 in step S201, adds the address of the voice monitoring device 1 and transfers it (step S202).

  When receiving the IP packet in which the RTP packet is encapsulated from the NW device 3 via the communication unit 11, the capsule restoration function unit 16 of the voice monitoring device 1 removes the header of the voice monitoring device 1 from the received IP packet, and the NW The RTP packet duplicated in the device 3 is extracted and restored (step S301). The RTP storage function unit 17 searches the user information table in the storage unit 12 using the destination or transmission source information set in the restored RTP packet, that is, the monitoring target address as a key, and the corresponding telephone. The number is read (step S302). Next, when the RTP storage function unit 17 searches the inquiry table in the storage unit 12 using the read telephone number as a key and acquires the inquiry ID, the RTP storage function unit 17 uses the acquired telephone number or inquiry ID as a key in the storage unit 12. The acquired RTP data table is searched, and it is determined whether a record in which the telephone number or the inquiry ID is set is already registered.

  If a record in which the acquired telephone number or inquiry ID is set is not yet registered, the RTP storage function unit 17 generates an RTP file, which is a new file for storing RTP packets, and writes it to the storage unit 12 to be restored. The RTP packet is added to the RTP file and written. The RTP storage function unit 17 has acquired the record including the telephone number, the inquiry ID, the acquisition start time and the acquisition end time that set the reception time of the transferred RTP, and the RTP file storage location information written in the storage unit 12. Add to the data table.

  On the other hand, when a record in which the acquired telephone number or inquiry ID is set is already registered in the acquired RTP data table, the RTP storage function unit 17 reads the storage location of the RTP file from the record and restores the restored RTP packet Are added to the RTP file specified by the read storage location and written. The RTP accumulation function unit 17 writes the acquisition end time in which the reception time of the transferred RTP is set in the corresponding record of the acquired RTP data table (step S303).

  When search information for specifying a voice monitoring target, for example, one or more information among a telephone number, an inquiry ID, and time is input by the input unit 13 of the voice monitoring device 1, the playback function unit 18 is input. Using the retrieved information as a key, the acquired RTP data table in the storage unit 12 is searched to identify the corresponding record, and the RTP packet is read out from the RTP file specified by the RTP file storage location in the record. Audio data set in the payload in the RTP packet is converted into audio and output by the output unit 19 (step S304). When the maintenance person ID is used as search information instead of the inquiry ID, the inquiry ID is acquired from the record of the inquiry table in which the maintenance person ID is set as the operation user information, and the acquired inquiry ID is acquired. Used to search the completed RTP data table.

  In the above description, when the destination or source address of the received RTP packet matches the monitoring target address, the NW device 3 duplicates the RTP packet, encapsulates it, and transfers it to the voice monitoring device 1. However, only when the destination of the received RTP packet matches or when it matches the source, the RTP packet is copied and encapsulated, and the address of the voice monitoring device 1 is added and transferred. May be.

FIG. 8 shows (a) a voice packet transmitted and received between the telephone terminals 5, (b) a voice packet encapsulated in the NW device 3, (c) a voice packet restored in the voice monitoring device 1, and (d) a voice. It is a figure for demonstrating the audio | voice packet accumulate | stored and reproduced | regenerated in the monitoring apparatus.
As shown in FIG. 8A, in the RTP packet transmitted / received between the telephone terminals 5, voice data is set in the payload. As an address for identifying the telephone terminal 5 of the transmission source user, (i) IP address in UDP packet header, (ii) VLAN-ID set at MAC packet level, (iii) IP address and port number in UDP packet header, (iv) IP address in IP packet header, and A port number or the like in the UDP packet header is used.

  As shown in FIG. 8B, in step S201, the RTP packet duplication function unit 34 duplicates the RTP packet from the lowest layer used as the user address. That is, in the case of (ii), the packet corresponding to the layer corresponding to the MAC and the upper layer is copied, and in the cases of (i), (iii) and (iv), the layer corresponding to the IP and the upper layer thereof Duplicate the part of the packet. In step S202, the encapsulation transfer function unit 35 adds (I) the IP address of the voice monitoring device 1 to the duplicated RTP packet when the voice monitoring device 1 and the NW device 3 are different segments, and (II) the same segment. Is encapsulated by adding the MAC address of the voice monitoring device 1 and transferred.

  As shown in FIG. 8C, in step S301, the capsule restoration function unit 16 deletes the header information of the voice monitoring device 1 from the transfer packet, and restores the RTP packet copied in step S201. Then, as shown in FIG. 8D, in step S303, the RTP header and audio data portion in the extracted RTP packet are written and held in the RTP file, and in step S304, based on the audio data. Sound is played.

  The voice monitoring device 1 and the NW device 3 have a computer system inside. Then, the user accommodation information search function unit 14, the NW device control function unit 15, the capsule restoration function unit 16, the RTP storage function unit 17, the playback function unit 18, and the NW device 3 of the point voice monitoring device 1 described above. The operation processes of the instruction receiving unit 33, the RTP packet duplicating function unit 34, and the encapsulation transfer function unit 35 are stored in a computer-readable recording medium in the form of a program, and this program is read and executed by the computer system. Thus, the above process is performed. Here, the computer system includes a CPU, various memories, an OS, and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

It is a figure showing the whole voice monitoring system composition by one embodiment of the invention. It is a functional block diagram of the audio monitoring device according to the embodiment. It is a functional block diagram of the NW device by the same embodiment. It is a figure showing an example of data composition of a user information table by the embodiment. It is a figure which shows the example of a data structure of the inquiry table by the embodiment. It is a figure which shows the data structural example of the acquired RTP data table by the embodiment. It is a figure which shows the process of the audio | voice monitoring system by the embodiment. It is a figure which shows the audio | voice packet processed in the audio | voice monitoring system by the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Voice monitoring apparatus 2 ... Call control apparatus 3 ... NW apparatus 4 ... VoIP-TA
DESCRIPTION OF SYMBOLS 5 ... Telephone terminal 11 ... Communication part 12, 32 ... Memory | storage part 13 ... Input part 14 ... User accommodation information search function part 15 ... NW apparatus control function part 16 ... Capsule restoration function part 17 ... RTP accumulation | storage function part 18 ... Reproduction | regeneration function part DESCRIPTION OF SYMBOLS 19 ... Output part 31 ... Routing part 33 ... Instruction receiving part 34 ... RTP packet duplication function part 35 ... Encapsulation transfer function part

Claims (8)

A voice monitoring system comprising: a voice monitoring device connected to a network for monitoring voice of an IP phone; and a network device for configuring the network and routing packets,
The voice monitoring device is
A user information table indicating information associating user identification information, address information of a network device accommodating the user's IP telephone device identified by the user identification information, and address information of the user's IP telephone device A storage unit that stores an inquiry table in which user identification information, inquiry identification information, and maintenance person identification information are associated with each other;
And the maintenance identification information, receives the user identification information of the audio monitored user reads the address information of the network device corresponding to the user identification information and the address information of the IP telephone apparatus from the user information table user Accommodation information search function part;
A voice packet copy and transfer instruction and the IP telephone device address information read by the user accommodation information search function unit are transmitted with the address of the network device read by the user accommodation information search function unit as a destination. And generating new inquiry identification information, and writing the user identification information, the inquiry identification information, and the maintenance person identification information in the inquiry table in association with each other ,
A capsule restoration function unit for extracting a voice packet from a packet received from the network device;
The IP telephone device address information is acquired from the voice packet extracted by the capsule restoration function unit, and the user identification information corresponding to the acquired IP telephone device address information is read from the user information table, and the read user identification is read out. A storage function unit that correlates the inquiry identification information acquired from the inquiry table corresponding to the information and the extracted voice packet into the storage unit;
In response to the input of the search information, the query identification information corresponding to the maintenance person identification information indicated by the search information is acquired from the query table, the voice packet corresponding to the acquired query identification information is read from the storage unit, and the read voice packet And a playback function unit that plays back audio data
The network device is:
A routing unit for routing a packet received from an external device and transmitting the packet to another device;
An instruction receiving unit for receiving an instruction to copy and transfer a voice packet from the voice monitoring apparatus, and address information of a voice monitoring target IP telephone apparatus;
Packet duplication for duplicating the voice packet when the packet received by the routing unit is a voice packet in which voice data is set and the address information of the IP telephone apparatus received by the instruction receiving unit is set A functional part;
An encapsulated transfer function unit that encapsulates and transfers the packet copied by the packet copy function unit to the voice monitoring device;
Voice monitoring system characterized by that.   2. The voice monitoring system according to claim 1, wherein the address information of the IP telephone device subject to voice monitoring is an IP address.   2. The voice monitoring system according to claim 1, wherein the address information of the IP telephone device subject to voice monitoring is VLAN-ID.   2. The voice monitoring system according to claim 1, wherein the address information of the IP telephone device subject to voice monitoring is an IP address and a port number in a UDP packet header.   2. The voice monitoring system according to claim 1, wherein the address information of the IP telephone device subject to voice monitoring is an IP address in an IP packet header and a port number in a UDP packet header. A voice monitoring device in a voice monitoring system, comprising: a voice monitoring device connected to a network and monitoring voice of an IP phone; and a network device constituting the network and routing packets,
A user information table indicating information associating user identification information, address information of a network device accommodating the user's IP telephone device identified by the user identification information, and address information of the user's IP telephone device A storage unit that stores an inquiry table in which user identification information, inquiry identification information, and maintenance person identification information are associated with each other;
And the maintenance identification information, receives the user identification information of the audio monitored user reads the address information of the network device corresponding to the user identification information and the address information of the IP telephone apparatus from the user information table user Accommodation information search function part;
A voice packet copy and transfer instruction and the IP telephone device address information read by the user accommodation information search function unit are transmitted with the address of the network device read by the user accommodation information search function unit as a destination. And generating new inquiry identification information, and writing the user identification information, the inquiry identification information, and the maintenance person identification information in the inquiry table in association with each other ,
Address information of the IP telephone device is set from the network device that has transmitted the instruction for copying and transferring the voice packet, and a packet encapsulating the voice packet duplicated in the network device is received, and the voice is received from the received packet. A capsule restoration function for extracting packets;
The IP telephone device address information is acquired from the voice packet extracted by the capsule restoration function unit, and the user identification information corresponding to the acquired IP telephone device address information is read from the user information table, and the read user identification is read out. A storage function unit that correlates the inquiry identification information acquired from the inquiry table corresponding to the information and the extracted voice packet into the storage unit;
In response to the input of the search information, the query identification information corresponding to the maintenance person identification information indicated by the search information is acquired from the query table, the voice packet corresponding to the acquired query identification information is read from the storage unit, and the read voice packet A playback function unit that plays back audio data
A voice monitoring device comprising: A voice monitoring system comprising a voice monitoring device connected to a network and monitoring voice of an IP phone, and a network device that configures the network and routes packets received from an external device and transmits them to other devices A voice monitoring method,
The voice monitoring device is
A user information table indicating information associating user identification information, address information of a network device accommodating the user's IP telephone device identified by the user identification information, and address information of the user's IP telephone device And a storage unit for storing an inquiry table in which user identification information, inquiry identification information, and maintenance person identification information are associated with each other.
In the voice monitoring device,
Accommodation information retrieval function unit, and the maintenance identification information, receives the user identification information of the audio monitored user, and the address information of the network device corresponding to the user identification information and the address information of the IP telephone apparatus Read from the user information table;
The network device control function unit uses the address of the network device read by the user accommodation information search function unit as a destination, and a voice packet copy and transfer instruction, and the IP telephone read by the user accommodation information search function unit Transmitting the address information of the device, generating new inquiry identification information, and writing the user identification information, the inquiry identification information, and the maintenance person identification information in association with the inquiry table ,
In the network device,
The instruction receiving unit receives from the voice monitoring apparatus a voice packet copy and transfer instruction and address information of the IP telephone apparatus subject to voice monitoring,
If the packet received by the packet duplicating function unit from an external device is a voice packet in which voice data is set and the address information of the IP telephone device received by the instruction receiving unit is set, the voice Duplicate the packet,
The encapsulated transfer function unit encapsulates the packet replicated by the packet replication function unit and transfers it to the voice monitoring device,
In the voice monitoring device,
A capsule restoration function unit extracts a voice packet from a packet received from the network device;
The storage function unit acquires the IP telephone device address information from the voice packet extracted by the capsule restoration function unit, and further reads out the user identification information corresponding to the acquired IP telephone device address information from the user information table The inquiry identification information acquired from the inquiry table corresponding to the read user identification information and the extracted voice packet are written in the storage unit in association with each other,
The reproduction function unit receives the search information, acquires inquiry identification information corresponding to the maintenance person identification information indicated by the search information from the inquiry table, and reads out the voice packet corresponding to the acquired inquiry identification information from the storage unit , Play the voice data in the read voice packet,
A voice monitoring method characterized by the above. A computer used for the voice monitoring device in a voice monitoring system, comprising: a voice monitoring device connected to a network and monitoring a voice of an IP phone; and a network device constituting the network and routing packets.
A user information table indicating information associating user identification information, address information of a network device accommodating the user's IP telephone device identified by the user identification information, and address information of the user's IP telephone device A storage unit that stores an inquiry table in which user identification information, inquiry identification information, and maintenance person identification information are associated with each other ,
And the maintenance identification information, receives the user identification information of the audio monitored user reads the address information of the network device corresponding to the user identification information and the address information of the IP telephone apparatus from the user information table user Accommodation information search function part,
A voice packet copy and transfer instruction and the IP telephone device address information read by the user accommodation information search function unit are transmitted with the address of the network device read by the user accommodation information search function unit as a destination. And a network device control function unit that generates new inquiry identification information and writes the user identification information, the inquiry identification information, and the maintenance person identification information in association with each other in the inquiry table ,
Address information of the IP telephone device is set from the network device that has transmitted the instruction for copying and transferring the voice packet, and a packet encapsulating the voice packet duplicated in the network device is received, and the voice is received from the received packet. Capsule restoration function to extract packets,
The IP telephone device address information is acquired from the voice packet extracted by the capsule restoration function unit, and the user identification information corresponding to the acquired IP telephone device address information is read from the user information table, and the read user identification is read out. A storage function unit that correlates the inquiry identification information acquired from the inquiry table corresponding to the information and the extracted voice packet, and writes it in the storage unit;
In response to the input of the search information, the query identification information corresponding to the maintenance person identification information indicated by the search information is acquired from the query table, the voice packet corresponding to the acquired query identification information is read from the storage unit, and the read voice packet Playback function unit to play back audio data
A computer program that functions as a computer program.

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