WO2022003892A1 - Processing device, processing method, and processing program - Google Patents

Processing device, processing method, and processing program Download PDF

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Publication number
WO2022003892A1
WO2022003892A1 PCT/JP2020/025960 JP2020025960W WO2022003892A1 WO 2022003892 A1 WO2022003892 A1 WO 2022003892A1 JP 2020025960 W JP2020025960 W JP 2020025960W WO 2022003892 A1 WO2022003892 A1 WO 2022003892A1
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Prior art keywords
network device
rtp packet
sip
network
identifier
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PCT/JP2020/025960
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French (fr)
Japanese (ja)
Inventor
暁彦 澤田
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日本電信電話株式会社
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Priority to PCT/JP2020/025960 priority Critical patent/WO2022003892A1/en
Publication of WO2022003892A1 publication Critical patent/WO2022003892A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/11—Identifying congestion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/35—Flow control; Congestion control by embedding flow control information in regular packets, e.g. piggybacking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS

Definitions

  • the present invention relates to a processing apparatus, a processing method and a processing program.
  • IP phones using SIP (Session Initiation Protocol) and RTP (Real-time Transport Protocol) are widespread (see Non-Patent Document 1 and Non-Patent Document 2).
  • SIP Session Initiation Protocol
  • RTP Real-time Transport Protocol
  • the suspected location of the device that constitutes the network may be identified.
  • the maintenance person checks the status of each network device and manually narrows down the suspected parts. This requires the operation of a maintenance person, and there is a problem that it is costly to identify the suspected part.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique capable of reducing the cost required for identifying a suspected failure location in an IP telephone.
  • the processing device of one aspect of the present invention includes a collecting unit that collects SIP signals transmitted and received between network devices that pass between the calling terminal and the incoming terminal for a call between the outgoing terminal and the incoming terminal in which voice deterioration has occurred.
  • the generator that extracts the identifier of the network device specified as the destination of the RTP packet related to the call and generates the route data that identifies the identifier of the network device that the RTP packet has passed through, and the route data. It is provided with a specific unit for identifying a suspected location where a missing RTP packet has occurred by comparing the RTP packets sent and received by the network device specified in.
  • the processing method of one aspect of the present invention comprises a step in which a computer collects SIP signals transmitted and received between network devices that pass between the outgoing terminal and the incoming terminal for a call between the outgoing terminal and the incoming terminal that have deteriorated.
  • the computer extracts the identifier of the network device specified as the destination of the RTP packet related to the call, and generates route data for specifying the identifier of the network device through which the RTP packet has passed.
  • the computer comprises a step of comparing the RTP packets sent and received by the network device specified by the route data to identify the suspected location where the RTP packet is missing.
  • One aspect of the present invention is a processing program that causes a computer to function as the processing device.
  • FIG. 1 is a diagram illustrating a system configuration of a telephone system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a functional block of the processing apparatus according to the embodiment of the present invention.
  • FIG. 3 is a diagram illustrating an example of a data structure of accommodation SIP data.
  • FIG. 4 is a diagram illustrating an example of a data structure of address data.
  • FIG. 5 is a diagram illustrating an example of a data structure of SIP signal data.
  • FIG. 6 is a diagram illustrating an example of a data structure of route data.
  • FIG. 7 is a diagram illustrating an example of identifying a suspected portion in the embodiment of the present invention.
  • FIG. 8 is a flowchart illustrating a processing method by the processing apparatus according to the embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a hardware configuration of a computer used in a processing device.
  • the call system 50 includes various network devices used to realize a call between the processing device 1, the calling terminal 2, the ringing terminal 3, the calling terminal 2, and the ringing terminal 3.
  • the various network devices are the outgoing side joining SIP server 11, the outgoing side network SIP server group 12, the outgoing side network device group 13, and the outgoing side NNI-GW (Network-Network Interface GateWay) device group 14. , Transmission device group 15, arrival side NNI-GW group 16, arrival side network device group 17, arrival side network SIP server group 18, and arrival side subscriber SIP server 19.
  • the connection line shown by the thick line is an example of the route to which the SIP signal and the RTP packet are transmitted in the embodiment of the present invention.
  • the network configuration shown in FIG. 1 is an example and is not limited to this.
  • the calling side subscription SIP server 11 is a SIP server accommodating the calling terminal 2.
  • the SIP server group 12 in the calling network is a SIP server for establishing a session for controlling calls in the calling network.
  • the origination side network device group 13 is a switch or a router installed in the origination side network.
  • the originator-side NNI-GW group 14 is a SIP server that absorbs the difference in specifications between the communication carriers of the originator-side network and the arrival-side network.
  • the transmission device group 15 is a device for transmitting communication between communication carriers.
  • the arrival side NNI-GW group 16 is a SIP server that absorbs the difference in specifications between the communication carriers of the origin side network and the arrival side network.
  • the arrival side network device group 17 is a switch or a router installed in the arrival side network.
  • the SIP server group 18 in the arrival side network is a SIP server for establishing a session for controlling a call in the arrival side network.
  • the arrival side subscription SIP server 19 is a SIP
  • Origin side network SIP server group 12 origin side network device group 13, origin side NNI-GW group 14, transmission device group 15, arrival side NNI-GW group 16, arrival side network device group 17, and arrival side network SIP server
  • the group 18 may be multiplexed by a plurality of devices in order to support a large amount of communication.
  • the SIP signal establishes a session with any of the devices performing the same type of processing.
  • voice degradation occurs in a multiplexed system, it may cost a lot to identify the network device that processed the packet in which the voice degradation occurred.
  • the subscriber SIP servers such as the originating SIP server 11 and the arriving SIP server 19 are also multiplexed. Since the subscriber SIP server accommodating the terminal is determined by the telephone numbers of the calling terminal 2 and the arriving terminal 3, the cost of identifying the subscribed SIP server that processed the packet in which voice deterioration has occurred is the cost of multiplexing other network devices. Low compared to.
  • the processing device 1 is connected to each network device constituting the call system 50.
  • the processing device 1 may be connected to all network devices, or may be connected to some network devices such as a network device on the originating side or a network device on the arriving side.
  • the processing device 1 acquires a SIP signal from the network device, identifies the network device via which the RTP packet relating to the call in which voice deterioration has occurred from the session in which the SIP signal is established, and identifies the network device via which the identified network device is suspected of failure. To identify.
  • the processing device 1 includes log data 101, accommodation SIP data 102, address data 103, SIP signal data 104, route data 105, suspected location data 106, collection unit 121, generation unit 122, identification unit 123, and output unit 124.
  • the log data 101, the accommodation SIP data 102, the address data 103, the SIP signal data 104, the route data 105, and the suspected location data 106 are data stored in the memory 902 or the storage 903.
  • the collection unit 121, the generation unit 122, the specific unit 123, and the output unit 124 are functional units mounted on the processing device 1 by the execution of the CPU 901.
  • the log data 101 is a log acquired from each network device, and includes a copy of the SIP signal processed by each network device.
  • the log data 101 includes a log acquired by the log acquisition function of the network device.
  • the log data 101 includes a log formed by capturing the data input / output by these network devices.
  • the accommodation SIP data 102 is data that associates a telephone number with an identifier of a subscription SIP server accommodating the telephone number.
  • the accommodation SIP data 102 may further be associated with the name of the accommodation operator accommodating the telephone number.
  • the address data 103 is data that associates the identifier of each network device used in the communication system 50 with the address and port number used by the network device.
  • the address data 103 associates the address and the port number with each other for the identifier of each network device.
  • the SIP signal data 104 is the SIP signal data extracted from the log data 101 and relating to a call in which voice deterioration has occurred.
  • the SIP signal data 104 includes data of a plurality of SIP signals 104a, 104b, 104c, 104d ... As shown in FIG. 5, for example.
  • the SIP signal data 104 is output by the collecting unit 121.
  • the route data 105 is data of a network device via which an RTP packet related to a call in which voice deterioration has occurred has passed. As shown in FIG. 6, for example, the route data 105 is associated with the identifier of the network device through which the RTP packet has passed and the order in which the RTP packet has passed. The route data 105 indicates a tracking route of an RTP packet in which voice deterioration has occurred in the communication system 50. The route data 105 is output by the generation unit 122.
  • the suspected location data 106 is data for identifying the suspected location that causes voice deterioration in a call in which voice deterioration has occurred.
  • the suspected location data 106 includes an identifier of the network device when the network device becomes a suspected location.
  • the suspicious location data 106 includes an identifier of the transmission interface when a transmission interface such as a transmission cable between network devices and a cable connection portion is a suspicious location.
  • the identifier of the transmission interface may be an identifier of a transmission interface, a transmission cable, or the like, or may be an identifier of two network devices to which the transmission interface is connected.
  • the suspicious location data 106 is output by the specific unit 123.
  • the log data 101, the accommodation SIP data 102, and the address data 103 are in a state in which the processing device 1 can refer to the log data 101, the accommodation SIP data 102, and the address data 103 in advance before the processing for identifying the suspected portion.
  • the SIP signal data 104, the route data 105, and the suspected location data 106 are generated by the processing device 1 in the process of identifying the suspected location.
  • the collecting unit 121 collects SIP signals transmitted and received between network devices passing between the originating terminal 2 and the incoming terminal 3 for a call between the originating terminal 2 and the incoming terminal 3 in which voice deterioration has occurred.
  • the collecting unit 121 collects the SIP signal relating to the call between the originating terminal 2 and the incoming terminal 3 in which the voice deterioration has occurred from the log data 101 of the SIP signal transmitted and received between the network devices.
  • the collecting unit 121 specifies the identifier of the call, the telephone number of the calling terminal 2 and the telephone number of the incoming terminal 3 for the call in which the voice deterioration has occurred.
  • the collecting unit 121 refers to the accommodation SIP data 102, and starts from the specified telephone number, the identifier of the accommodation subscription SIP server accommodating the telephone number, specifically, the calling side subscription SIP server 11 shown in FIG.
  • the identifier and the identifier of the incoming SIP server 19 are acquired.
  • the collection unit 121 includes a SIP server group 12 in the departure side network, a departure side network device group 13, a departure side NNI-GW group 14, a transmission device group 15, a arrival side NNI-GW group 16, a arrival side network device group 17, and an arrival side network device group 17. From the log data 101 acquired from the SIP server group 18 in the side network, the SIP signal in which the identifier of the call in which the voice deterioration has occurred is set, and the SIP signal data 104 shown in FIG. 5 is generated. The collection unit 121 may collect the SIP signal of the call in which the voice deterioration has occurred from the log data 101 using the identifiers of the calling terminal 2 and the incoming terminal 3 as keys.
  • the collected SIP signal includes various messages such as INVITE and 200OK.
  • the destination address of the SIP signal is set. This destination address is the destination for SIP signals and RTP packets.
  • each SIP signal shown in FIG. 5 a plurality of multiplexed network devices are used as a destination of an RTP packet controlled by the SIP signal.
  • the identifier of one of the network devices is specified.
  • the SIP server group 12 in the originating network includes two servers, and the originating SIP server can connect to these two servers.
  • the address of the lower device of the SIP server group 12 in the originating network is set as the destination of the SIP signal by the originating SIP server 11.
  • the generation unit 122 extracts the identifier of the network device designated as the destination of the RTP packet related to the call from the collected SIP signal, and generates the route data 105 that specifies the identifier of the network device through which the RTP packet has passed. ..
  • the generation unit 122 converts the address of the transmission destination of each SIP signal of the SIP signal data 104 into an identifier of the network device with reference to the address data 103.
  • the generation unit 122 generates the route data 105 including the converted network device identifier.
  • the identifier of the network device is the name of the network device or the like, but it may be the address, address and port number of the network device.
  • the generation unit 122 may specify the identifier and order of the network device through which the RTP packet has passed in the route data 105.
  • the generation unit 122 sequentially traces the destination address of the SIP signal, sequentially identifies the network device through which the RTP packet passes, and generates the route data 105.
  • the specifying unit 123 compares the RTP packets sent and received by the network device specified by the route data 105, and identifies the suspected location where the RTP packet is missing.
  • the identification unit 123 compares the header and the payload of the RTP packet, respectively, and identifies the location where the RTP packet is missing.
  • the specific unit 123 may compare the RTP packet saved in the log.
  • the specifying unit 123 may compare the RTP packets transmitted and received between the network devices specified by the route data.
  • the RTP packet to be compared may be a test packet generated for verification of the failure location, or a packet of a call generated at the time of comparison (a call different from the call in which voice deterioration has occurred).
  • the specifying unit 123 compares the packet received by the network device specified by the route data 105 with the packet transmitted. When the packet received by the network device specified by the route data 105 and the packet to be transmitted are different from each other, the specifying unit 123 identifies the network device as a suspected place.
  • the specifying unit 123 compares the RTP packet transmitted by the predetermined network device with the RTP packet received by the network device to which the RTP packet has passed next to the predetermined network device in the route data 105. When the RTP packet transmitted by the predetermined network device and the RTP packet received by the network device via the RTP packet next to the predetermined network device are different from each other, the specifying unit 123 of the predetermined network device and the predetermined network device. Next, the transmission interface with the network device via which the RTP packet has passed is identified as the suspected part.
  • the specific unit 123 may exclude the comparison of packets transmitted beyond the transmission device group 15.
  • the thick line is the route via the RTP packet of the call in which the voice deterioration has occurred.
  • the packet group P4 received by the network equipment of the group P3 and the calling side network device group 13 is shown.
  • the packet groups P1, P2 and P3 are the same.
  • the packet group P4 has a defect in the third packet as compared with each of the packet groups P1, P2 and P3.
  • FIG. 7 it is shown that a failure is suspected in the transmission interface between the network device of the SIP server group 12 in the originating network and the network device of the originating network device group 13.
  • the output unit 124 outputs the suspected portion specified by the specific unit 123.
  • the output unit 124 may display the specific information of the suspected portion on an output device 906 such as a display, or may notify the terminal of the person in charge by a message or the like.
  • step S1 the processing device 1 collects a SIP signal related to a call in which voice deterioration has occurred.
  • step S2 the processing device 1 refers to the SIP signal collected in step S1 and specifies the destination of the RTP packet specified by each SIP signal.
  • the processing device 1 identifies the identifier of the network device through which the RTP packet has passed from the destination of the RTP packet.
  • step S3 the processing device 1 compares the packets sent and received by the network device specified in step S2, and identifies the location where the packet is missing.
  • step S4 the processing device 1 outputs the packet missing portion specified in step S2 as a suspected fault location, and ends the processing.
  • the route of the RTP packet is specified from the SIP signal by computer processing for the call in which the voice is deteriorated, and the RTP packets transmitted and received by the route are compared. By doing so, it is possible to identify the suspected location of the failure. As a result, the processing device 1 can reduce the cost required for identifying the suspected failure location in the IP telephone.
  • the processing device 1 of the present embodiment described above includes, for example, a CPU (Central Processing Unit, processor) 901, a memory 902, a storage 903 (HDD: Hard Disk Drive, SSD: Solid State Drive), and a communication device 904.
  • a general purpose computer system including an input device 905 and an output device 906 is used.
  • each function of the processing device 1 is realized by executing the processing program loaded on the memory 902 by the CPU 901.
  • the processing device 1 may be mounted on one computer or may be mounted on a plurality of computers. Further, the processing device 1 may be a virtual machine mounted on a computer.
  • the program of the processing device 1 can be stored in a computer-readable recording medium such as an HDD, SSD, USB (Universal Serial Bus) memory, CD (Compact Disc), DVD (Digital Versatile Disc), or distributed via a network. You can also do it.
  • a computer-readable recording medium such as an HDD, SSD, USB (Universal Serial Bus) memory, CD (Compact Disc), DVD (Digital Versatile Disc), or distributed via a network. You can also do it.
  • the present invention is not limited to the above embodiment, and many modifications can be made within the scope of the gist thereof.
  • Processing device 2 Departure terminal 3 Departure terminal 11 Departure side subscription SIP server 12 Departure side network SIP server group 13 Departure side network device group 14 Departure side NNI-GW group 15 Transmission device group 16 Arrival side NNI-GW group 17 Arrival side Network device group 18 End-side network SIP server group 19 End-side subscription SIP server 50 Call system 101 Log data 102 Containment SIP data 103 Address data 104 SIP signal data 105 Route data 106 Suspicious location data 121 Collection unit 122 Generation unit 123 Specific unit 124 Output unit 901 CPU 902 Memory 903 Storage 904 Communication device 905 Input device 906 Output device

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
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Abstract

A processing device 1 is provided with: a collection unit 121 for collecting SIP signals transmitted/received between network devices routed between an outgoing call terminal and incoming call terminal, regarding a call in which voice degradation has occurred between the outgoing call terminal and incoming call terminal; a generation unit 122 that extracts identifiers for network devices designated, in the collected SIP signals, as transmission destinations for RTP packets pertaining to the call, and generates route data 105 specifying the identifiers for the network devices through which the RTP packets were routed; and a specification unit 123 that compares the RTP packets transmitted/received by the network devices specified in the route data 105 and specifies suspected sites where RTP packet loss occurred.

Description

処理装置、処理方法および処理プログラムProcessing equipment, processing methods and processing programs
　本発明は、処理装置、処理方法および処理プログラムに関する。 The present invention relates to a processing apparatus, a processing method and a processing program.
　ＳＩＰ（Session Initiation Protocol）およびＲＴＰ（Real-time Transport Protocol）を用いるＩＰ電話が普及している（非特許文献１および非特許文献２参照）。ＳＩＰにより、発端末と着端末間でセッションが確立されると、確立されたセッションでＲＴＰパケットが交換されて、通話が実現する。 IP phones using SIP (Session Initiation Protocol) and RTP (Real-time Transport Protocol) are widespread (see Non-Patent Document 1 and Non-Patent Document 2). When a session is established between the outgoing terminal and the incoming terminal by SIP, RTP packets are exchanged in the established session, and a call is realized.
　このようなＩＰ電話において音声劣化が生じると、ネットワークを構成する機器のうち、故障が疑われる被疑箇所を特定する場合がある。保守担当者は、個々のネットワーク装置の状態を確認して、被疑箇所の絞り込みを手動で行う。これにより、保守者の稼働を要し、被疑箇所の特定にコストがかかる問題がある。 When voice deterioration occurs in such an IP phone, the suspected location of the device that constitutes the network may be identified. The maintenance person checks the status of each network device and manually narrows down the suspected parts. This requires the operation of a maintenance person, and there is a problem that it is costly to identify the suspected part.
　本発明は、上記事情に鑑みてなされたものであり、本発明の目的は、ＩＰ電話における故障の被疑箇所の特定に要するコストを低減可能な技術を提供することである。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique capable of reducing the cost required for identifying a suspected failure location in an IP telephone.
　本発明の一態様の処理装置は、音声劣化が生じた発端末および着端末間の呼について、発端末および着端末間で経由するネットワーク機器間で送受信されたＳＩＰ信号を収集する収集部と、収集されたＳＩＰ信号において、呼に関するＲＴＰパケットの送信先として指定されたネットワーク機器の識別子を抽出して、ＲＴＰパケットが経由したネットワーク機器の識別子を特定するルートデータを生成する生成部と、ルートデータで特定されたネットワーク機器が送受信したＲＴＰパケットを比較して、ＲＴＰパケットの欠損が生じた被疑箇所を特定する特定部を備える。 The processing device of one aspect of the present invention includes a collecting unit that collects SIP signals transmitted and received between network devices that pass between the calling terminal and the incoming terminal for a call between the outgoing terminal and the incoming terminal in which voice deterioration has occurred. In the collected SIP signal, the generator that extracts the identifier of the network device specified as the destination of the RTP packet related to the call and generates the route data that identifies the identifier of the network device that the RTP packet has passed through, and the route data. It is provided with a specific unit for identifying a suspected location where a missing RTP packet has occurred by comparing the RTP packets sent and received by the network device specified in.
　本発明の一態様の処理方法は、コンピュータが、劣化が生じた発端末および着端末間の呼について、発端末および着端末間で経由するネットワーク機器間で送受信されたＳＩＰ信号を収集するステップと、コンピュータが、収集されたＳＩＰ信号において、呼に関するＲＴＰパケットの送信先として指定されたネットワーク機器の識別子を抽出して、ＲＴＰパケットが経由したネットワーク機器の識別子を特定するルートデータを生成するステップと、コンピュータが、ルートデータで特定されたネットワーク機器が送受信したＲＴＰパケットを比較して、ＲＴＰパケットの欠損が生じた被疑箇所を特定するステップを備える。 The processing method of one aspect of the present invention comprises a step in which a computer collects SIP signals transmitted and received between network devices that pass between the outgoing terminal and the incoming terminal for a call between the outgoing terminal and the incoming terminal that have deteriorated. In the collected SIP signal, the computer extracts the identifier of the network device specified as the destination of the RTP packet related to the call, and generates route data for specifying the identifier of the network device through which the RTP packet has passed. The computer comprises a step of comparing the RTP packets sent and received by the network device specified by the route data to identify the suspected location where the RTP packet is missing.
　本発明の一態様は、上記処理装置として、コンピュータを機能させる処理プログラムである。 One aspect of the present invention is a processing program that causes a computer to function as the processing device.
　本発明によれば、ＩＰ電話における故障の被疑箇所の特定に要するコストを低減可能な技術を提供することができる。 According to the present invention, it is possible to provide a technique capable of reducing the cost required for identifying a suspected failure location in an IP telephone.
図１は、本発明の実施の形態に係る通話システムのシステム構成を説明する図である。FIG. 1 is a diagram illustrating a system configuration of a telephone system according to an embodiment of the present invention. 図２は、本発明の実施の形態に係る処理装置の機能ブロックを説明する図である。FIG. 2 is a diagram illustrating a functional block of the processing apparatus according to the embodiment of the present invention. 図３は、収容ＳＩＰデータのデータ構造の一例を説明する図である。FIG. 3 is a diagram illustrating an example of a data structure of accommodation SIP data. 図４は、アドレスデータのデータ構造の一例を説明する図である。FIG. 4 is a diagram illustrating an example of a data structure of address data. 図５は、ＳＩＰ信号データのデータ構造の一例を説明する図である。FIG. 5 is a diagram illustrating an example of a data structure of SIP signal data. 図６は、ルートデータのデータ構造の一例を説明する図である。FIG. 6 is a diagram illustrating an example of a data structure of route data. 図７は、本発明の実施の形態において、被疑箇所を特定する例を説明する図である。FIG. 7 is a diagram illustrating an example of identifying a suspected portion in the embodiment of the present invention. 図８は、本発明の実施の形態に係る処理装置による処理方法を説明するフローチャートである。FIG. 8 is a flowchart illustrating a processing method by the processing apparatus according to the embodiment of the present invention. 図９は、処理装置に用いられるコンピュータのハードウエア構成を説明する図である。FIG. 9 is a diagram illustrating a hardware configuration of a computer used in a processing device.
　以下、図面を参照して、本発明の実施形態を説明する。図面の記載において同一部分には同一符号を付し説明を省略する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same parts are designated by the same reference numerals and the description thereof will be omitted.
　（通話システム）
　図１を参照して、本発明の実施の形態に係る処理装置１が用いられる通話システム５０を説明する。通話システム５０は、処理装置１、発端末２、着端末３、発端末２および着端末３間の通話を実現するために用いられる各種ネットワーク機器を備える。 (Call system)
A communication system 50 in which the processing device 1 according to the embodiment of the present invention is used will be described with reference to FIG. The call system 50 includes various network devices used to realize a call between the processing device 1, the calling terminal 2, the ringing terminal 3, the calling terminal 2, and the ringing terminal 3.
　図１に示す例において、各種ネットワーク機器は、発側加入ＳＩＰサーバ１１、発側網内ＳＩＰサーバ群１２、発側ネットワーク装置群１３、発側ＮＮＩ－ＧＷ（Network-Network Interface GateWay）装置群１４、伝送装置群１５、着側ＮＮＩ－ＧＷ群１６、着側ネットワーク装置群１７、着側網内ＳＩＰサーバ群１８および着側加入ＳＩＰサーバ１９である。図１において、太線で示された接続線が、本発明の実施の形態において、ＳＩＰ信号およびＲＴＰパケットが送信されたルートの例である。なお、図１に示すネットワーク構成は一例であって、これに限るものではない。 In the example shown in FIG. 1, the various network devices are the outgoing side joining SIP server 11, the outgoing side network SIP server group 12, the outgoing side network device group 13, and the outgoing side NNI-GW (Network-Network Interface GateWay) device group 14. , Transmission device group 15, arrival side NNI-GW group 16, arrival side network device group 17, arrival side network SIP server group 18, and arrival side subscriber SIP server 19. In FIG. 1, the connection line shown by the thick line is an example of the route to which the SIP signal and the RTP packet are transmitted in the embodiment of the present invention. The network configuration shown in FIG. 1 is an example and is not limited to this.
　発側加入ＳＩＰサーバ１１は、発端末２を収容するＳＩＰサーバである。発側網内ＳＩＰサーバ群１２は、発側網内における呼を制御するセッションを確立するためのＳＩＰサーバである。発側ネットワーク装置群１３は、発側網内に設置されるスイッチまたはルータ等である。発側ＮＮＩ－ＧＷ群１４は、発側網と着側網との通信キャリア間の仕様の差分を吸収するＳＩＰサーバである。伝送装置群１５は、通信キャリア間の通信を伝送する装置である。着側ＮＮＩ－ＧＷ群１６は、発側網と着側網との通信キャリア間の仕様の差分を吸収するＳＩＰサーバである。着側ネットワーク装置群１７は、着発側網内に設置されるスイッチまたはルータ等である。着側網内ＳＩＰサーバ群１８は、着側網内における呼を制御するセッションを確立するためのＳＩＰサーバである。着側加入ＳＩＰサーバ１９は、発端末２を収容するＳＩＰサーバである。 The calling side subscription SIP server 11 is a SIP server accommodating the calling terminal 2. The SIP server group 12 in the calling network is a SIP server for establishing a session for controlling calls in the calling network. The origination side network device group 13 is a switch or a router installed in the origination side network. The originator-side NNI-GW group 14 is a SIP server that absorbs the difference in specifications between the communication carriers of the originator-side network and the arrival-side network. The transmission device group 15 is a device for transmitting communication between communication carriers. The arrival side NNI-GW group 16 is a SIP server that absorbs the difference in specifications between the communication carriers of the origin side network and the arrival side network. The arrival side network device group 17 is a switch or a router installed in the arrival side network. The SIP server group 18 in the arrival side network is a SIP server for establishing a session for controlling a call in the arrival side network. The arrival side subscription SIP server 19 is a SIP server accommodating the transmission terminal 2.
　発側網内ＳＩＰサーバ群１２、発側ネットワーク装置群１３、発側ＮＮＩ－ＧＷ群１４、伝送装置群１５、着側ＮＮＩ－ＧＷ群１６、着側ネットワーク装置群１７および着側網内ＳＩＰサーバ群１８は、大量の通信に対応するために、それぞれ複数の装置によって多重化される場合がある。ＳＩＰ信号は、同種の処理を行う装置群のいずれかとセッションを確立する。多重化されているシステムにおいて音声劣化が生じると、その音声劣化が生じたパケットを処理したネットワーク機器を特定するために多くのコストを要する場合がある。 Origin side network SIP server group 12, origin side network device group 13, origin side NNI-GW group 14, transmission device group 15, arrival side NNI-GW group 16, arrival side network device group 17, and arrival side network SIP server The group 18 may be multiplexed by a plurality of devices in order to support a large amount of communication. The SIP signal establishes a session with any of the devices performing the same type of processing. When voice degradation occurs in a multiplexed system, it may cost a lot to identify the network device that processed the packet in which the voice degradation occurred.
　なお、図１に示さないが、発側加入ＳＩＰサーバ１１および着側加入ＳＩＰサーバ１９等の加入ＳＩＰサーバも多重化される。発端末２および着端末３の電話番号により、その端末を収容する加入ＳＩＰサーバが決まるので、音声劣化が生じたパケットを処理した加入ＳＩＰサーバを特定するコストは、多重化される他のネットワーク機器と比べて低い。 Although not shown in FIG. 1, the subscriber SIP servers such as the originating SIP server 11 and the arriving SIP server 19 are also multiplexed. Since the subscriber SIP server accommodating the terminal is determined by the telephone numbers of the calling terminal 2 and the arriving terminal 3, the cost of identifying the subscribed SIP server that processed the packet in which voice deterioration has occurred is the cost of multiplexing other network devices. Low compared to.
　処理装置１は、通話システム５０を構成する各ネットワーク機器に接続する。処理装置１は、全てのネットワーク機器に接続しても良いし、発側のネットワーク機器または着側のネットワーク機器など、一部のネットワーク機器に接続しても良い。処理装置１は、ネットワーク機器からＳＩＰ信号を取得し、ＳＩＰ信号が確立したセッションから音声劣化が生じた呼に関するＲＴＰパケットが経由したネットワーク機器を特定して、特定されたネットワーク機器から故障の被疑箇所を特定する。 The processing device 1 is connected to each network device constituting the call system 50. The processing device 1 may be connected to all network devices, or may be connected to some network devices such as a network device on the originating side or a network device on the arriving side. The processing device 1 acquires a SIP signal from the network device, identifies the network device via which the RTP packet relating to the call in which voice deterioration has occurred from the session in which the SIP signal is established, and identifies the network device via which the identified network device is suspected of failure. To identify.
　処理装置１は、ログデータ１０１、収容ＳＩＰデータ１０２、アドレスデータ１０３、ＳＩＰ信号データ１０４、ルートデータ１０５、被疑箇所データ１０６、収集部１２１、生成部１２２、特定部１２３および出力部１２４を備える。ログデータ１０１、収容ＳＩＰデータ１０２、アドレスデータ１０３、ＳＩＰ信号データ１０４、ルートデータ１０５および被疑箇所データ１０６は、メモリ９０２またはストレージ９０３に記憶されるデータである。収集部１２１、生成部１２２、特定部１２３および出力部１２４は、CPU９０１の実行によって処理装置１に実装される機能部である。 The processing device 1 includes log data 101, accommodation SIP data 102, address data 103, SIP signal data 104, route data 105, suspected location data 106, collection unit 121, generation unit 122, identification unit 123, and output unit 124. The log data 101, the accommodation SIP data 102, the address data 103, the SIP signal data 104, the route data 105, and the suspected location data 106 are data stored in the memory 902 or the storage 903. The collection unit 121, the generation unit 122, the specific unit 123, and the output unit 124 are functional units mounted on the processing device 1 by the execution of the CPU 901.
　ログデータ１０１は、各ネットワーク機器から取得したログであって、各ネットワーク機器が処理したＳＩＰ信号の複製を含む。ＳＩＰサーバ等のログ取得機能を持つネットワーク機器について、ログデータ１０１は、そのネットワーク機器のログ取得機能で取得したログを含む。スイッチ、ルータ等のログ取得機能を持たないネットワーク機器について、ログデータ１０１は、これらのネットワーク機器が入出力するデータをキャプチャして形成されたログを含む。 The log data 101 is a log acquired from each network device, and includes a copy of the SIP signal processed by each network device. For a network device having a log acquisition function such as a SIP server, the log data 101 includes a log acquired by the log acquisition function of the network device. For network devices such as switches and routers that do not have a log acquisition function, the log data 101 includes a log formed by capturing the data input / output by these network devices.
　収容ＳＩＰデータ１０２は、図３に示すように電話番号とその電話番号を収容する加入ＳＩＰサーバの識別子を対応づけるデータである。収容ＳＩＰデータ１０２は、さらに、電話番号を収容する収容事業者名を対応づけても良い。 As shown in FIG. 3, the accommodation SIP data 102 is data that associates a telephone number with an identifier of a subscription SIP server accommodating the telephone number. The accommodation SIP data 102 may further be associated with the name of the accommodation operator accommodating the telephone number.
　アドレスデータ１０３は、図４に示すように、通話システム５０に用いられる各ネットワーク機器の識別子と、そのネットワーク機器が用いるアドレスおよびポート番号を対応づけるデータである。発側網内ＳＩＰサーバ群１２など、同一機能を実現する複数のネットワーク機器が多重化されている場合、アドレスデータ１０３は、各ネットワーク機器の識別子について、アドレスおよびポート番号を対応づける。 As shown in FIG. 4, the address data 103 is data that associates the identifier of each network device used in the communication system 50 with the address and port number used by the network device. When a plurality of network devices realizing the same function, such as the SIP server group 12 in the calling side network, are multiplexed, the address data 103 associates the address and the port number with each other for the identifier of each network device.
　ＳＩＰ信号データ１０４は、ログデータ１０１から抽出された、音声劣化が生じた呼に関するＳＩＰ信号のデータである。ＳＩＰ信号データ１０４は、例えば図５に示すように複数のＳＩＰ信号１０４ａ、１０４ｂ、１０４ｃ、１０４ｄ…のデータを含む。ＳＩＰ信号データ１０４は、収集部１２１によって出力される。 The SIP signal data 104 is the SIP signal data extracted from the log data 101 and relating to a call in which voice deterioration has occurred. The SIP signal data 104 includes data of a plurality of SIP signals 104a, 104b, 104c, 104d ... As shown in FIG. 5, for example. The SIP signal data 104 is output by the collecting unit 121.
　ルートデータ１０５は、音声劣化が生じた呼に関するＲＴＰパケットが経由したネットワーク機器のデータである。ルートデータ１０５は、例えば図６に示すように、ＲＴＰパケットが経由したネットワーク機器の識別子と、経由した順序が対応づけられる。ルートデータ１０５は、通話システム５０において、音声劣化が生じたＲＴＰパケットのトラッキングルートを示す。ルートデータ１０５は、生成部１２２によって出力される。 The route data 105 is data of a network device via which an RTP packet related to a call in which voice deterioration has occurred has passed. As shown in FIG. 6, for example, the route data 105 is associated with the identifier of the network device through which the RTP packet has passed and the order in which the RTP packet has passed. The route data 105 indicates a tracking route of an RTP packet in which voice deterioration has occurred in the communication system 50. The route data 105 is output by the generation unit 122.
　被疑箇所データ１０６は、音声劣化が生じた呼において、音声劣化の原因となる被疑箇所を特定するデータである。被疑箇所データ１０６は、ネットワーク機器が被疑箇所となる場合、そのネットワーク機器の識別子を含む。被疑箇所データ１０６は、ネットワーク機器間の伝送ケーブル、ケーブル接続部等の伝送インタフェース等が被疑箇所となる場合、その伝送インタフェースの識別子を含む。伝送インタフェースの識別子は、伝送インタフェース、伝送ケーブル等の識別子でも良いし、伝送インタフェースが接続する２つのネットワーク機器の識別子でも良い。被疑箇所データ１０６は、特定部１２３によって出力される。 The suspected location data 106 is data for identifying the suspected location that causes voice deterioration in a call in which voice deterioration has occurred. The suspected location data 106 includes an identifier of the network device when the network device becomes a suspected location. The suspicious location data 106 includes an identifier of the transmission interface when a transmission interface such as a transmission cable between network devices and a cable connection portion is a suspicious location. The identifier of the transmission interface may be an identifier of a transmission interface, a transmission cable, or the like, or may be an identifier of two network devices to which the transmission interface is connected. The suspicious location data 106 is output by the specific unit 123.
　なお、ログデータ１０１、収容ＳＩＰデータ１０２およびアドレスデータ１０３は、処理装置１が、被疑箇所を特定する処理の前に、予め処理装置１が参照できる状態となる。ＳＩＰ信号データ１０４、ルートデータ１０５および被疑箇所データ１０６は、処理装置１が、被疑箇所を特定する処理において生成される。 The log data 101, the accommodation SIP data 102, and the address data 103 are in a state in which the processing device 1 can refer to the log data 101, the accommodation SIP data 102, and the address data 103 in advance before the processing for identifying the suspected portion. The SIP signal data 104, the route data 105, and the suspected location data 106 are generated by the processing device 1 in the process of identifying the suspected location.
　収集部１２１は、音声劣化が生じた発端末２および着端末３間の呼について、発端末２および着端末３間で経由するネットワーク機器間で送受信されたＳＩＰ信号を収集する。収集部１２１は、ネットワーク機器間で送受信されたＳＩＰ信号のログデータ１０１から、音声劣化が生じた発端末２および着端末３間の呼に関するＳＩＰ信号を収集する。 The collecting unit 121 collects SIP signals transmitted and received between network devices passing between the originating terminal 2 and the incoming terminal 3 for a call between the originating terminal 2 and the incoming terminal 3 in which voice deterioration has occurred. The collecting unit 121 collects the SIP signal relating to the call between the originating terminal 2 and the incoming terminal 3 in which the voice deterioration has occurred from the log data 101 of the SIP signal transmitted and received between the network devices.
　収集部１２１は、音声劣化が生じた呼について、呼の識別子、発端末２および着端末３の電話番号を特定する。収集部１２１は、収容ＳＩＰデータ１０２を参照して、特定された電話番号から、その電話番号を収容する収容加入ＳＩＰサーバの識別子、具体的には、図１に示す発側加入ＳＩＰサーバ１１の識別子と、着側加入ＳＩＰサーバ１９の識別子を取得する。 The collecting unit 121 specifies the identifier of the call, the telephone number of the calling terminal 2 and the telephone number of the incoming terminal 3 for the call in which the voice deterioration has occurred. The collecting unit 121 refers to the accommodation SIP data 102, and starts from the specified telephone number, the identifier of the accommodation subscription SIP server accommodating the telephone number, specifically, the calling side subscription SIP server 11 shown in FIG. The identifier and the identifier of the incoming SIP server 19 are acquired.
　収集部１２１は、発側網内ＳＩＰサーバ群１２、発側ネットワーク装置群１３、発側ＮＮＩ－ＧＷ群１４、伝送装置群１５、着側ＮＮＩ－ＧＷ群１６、着側ネットワーク装置群１７および着側網内ＳＩＰサーバ群１８から取得したログデータ１０１から、音声劣化が生じた呼の識別子が設定されたＳＩＰ信号を収集して、図５に示すＳＩＰ信号データ１０４を生成する。収集部１２１は、発端末２および着端末３の識別子をキーとして、ログデータ１０１から、音声劣化が生じた呼のＳＩＰ信号を収集しても良い。 The collection unit 121 includes a SIP server group 12 in the departure side network, a departure side network device group 13, a departure side NNI-GW group 14, a transmission device group 15, a arrival side NNI-GW group 16, a arrival side network device group 17, and an arrival side network device group 17. From the log data 101 acquired from the SIP server group 18 in the side network, the SIP signal in which the identifier of the call in which the voice deterioration has occurred is set, and the SIP signal data 104 shown in FIG. 5 is generated. The collection unit 121 may collect the SIP signal of the call in which the voice deterioration has occurred from the log data 101 using the identifiers of the calling terminal 2 and the incoming terminal 3 as keys.
　収集されたＳＩＰ信号は、図５に示すように、ＩＮＶＩＴＥ、２００ＯＫ等の各種メッセージを含む。各ＳＩＰ信号は、ＳＩＰ信号の宛先のアドレスが設定される。この宛先のアドレスが、ＳＩＰ信号およびＲＴＰパケットの送信先となる。 As shown in FIG. 5, the collected SIP signal includes various messages such as INVITE and 200OK. For each SIP signal, the destination address of the SIP signal is set. This destination address is the destination for SIP signals and RTP packets.
　所定の機能を実現するために複数のネットワーク機器が多重化されている場合、図５に示す各ＳＩＰ信号において、ＳＩＰ信号によって制御されるＲＴＰパケットの送信先として、多重化された複数のネットワーク機器のうちの一つのネットワーク機器の識別子が、指定される。例えば図１に示す例において、発側網内ＳＩＰサーバ群１２は、２つのサーバを備え、発側加入ＳＩＰサーバは、この２つのサーバに接続可能である。発側加入ＳＩＰサーバ１１によるＳＩＰ信号の送信先として、発側網内ＳＩＰサーバ群１２の下側の装置のアドレスが設定される。 When a plurality of network devices are multiplexed in order to realize a predetermined function, in each SIP signal shown in FIG. 5, a plurality of multiplexed network devices are used as a destination of an RTP packet controlled by the SIP signal. The identifier of one of the network devices is specified. For example, in the example shown in FIG. 1, the SIP server group 12 in the originating network includes two servers, and the originating SIP server can connect to these two servers. The address of the lower device of the SIP server group 12 in the originating network is set as the destination of the SIP signal by the originating SIP server 11.
　生成部１２２は、収集されたＳＩＰ信号において、呼に関するＲＴＰパケットの送信先として指定されたネットワーク機器の識別子を抽出して、ＲＴＰパケットが経由したネットワーク機器の識別子を特定するルートデータ１０５を生成する。生成部１２２は、アドレスデータ１０３を参照して、ＳＩＰ信号データ１０４の各ＳＩＰ信号の送信先のアドレスを、ネットワーク機器の識別子に変換する。生成部１２２は、変換されたネットワーク機器の識別子を含むルートデータ１０５を生成する。なお、本発明の実施の形態において、ネットワーク機器の識別子は、ネットワーク機器の名称等であるが、そのネットワーク機器のアドレス、またはアドレスおよびポート番号であっても良い。 The generation unit 122 extracts the identifier of the network device designated as the destination of the RTP packet related to the call from the collected SIP signal, and generates the route data 105 that specifies the identifier of the network device through which the RTP packet has passed. .. The generation unit 122 converts the address of the transmission destination of each SIP signal of the SIP signal data 104 into an identifier of the network device with reference to the address data 103. The generation unit 122 generates the route data 105 including the converted network device identifier. In the embodiment of the present invention, the identifier of the network device is the name of the network device or the like, but it may be the address, address and port number of the network device.
　生成部１２２は、ルートデータ１０５において、ＲＴＰパケットが経由したネットワーク機器の識別子と順序を特定しても良い。生成部１２２は、ＳＩＰ信号の送信先のアドレスを順次辿り、ＲＴＰパケットが経由するネットワーク機器を、順次特定して、ルートデータ１０５を生成する。 The generation unit 122 may specify the identifier and order of the network device through which the RTP packet has passed in the route data 105. The generation unit 122 sequentially traces the destination address of the SIP signal, sequentially identifies the network device through which the RTP packet passes, and generates the route data 105.
　特定部１２３は、ルートデータ１０５で特定されたネットワーク機器が送受信したＲＴＰパケットを比較して、ＲＴＰパケットの欠損が生じた被疑箇所を特定する。特定部１２３は、ＲＴＰパケットのヘッダおよびペイロードをそれぞれ比較して、ＲＴＰパケットが欠損した箇所を特定する。 The specifying unit 123 compares the RTP packets sent and received by the network device specified by the route data 105, and identifies the suspected location where the RTP packet is missing. The identification unit 123 compares the header and the payload of the RTP packet, respectively, and identifies the location where the RTP packet is missing.
　ＲＴＰパケットのログが保存されている場合、特定部１２３は、そのログで保存されたＲＴＰパケットを比較しても良い。ＲＴＰパケットのログが保存されていない場合、特定部１２３は、ルートデータで特定されたネットワーク機器間で送受信されるＲＴＰパケットを比較しても良い。比較対象となるＲＴＰパケットは、故障箇所の検証のために生成されたテストパケットでも良いし、比較時に発生した呼（音声劣化が生じた呼とは異なる呼）のパケットでも良い。 When the log of the RTP packet is saved, the specific unit 123 may compare the RTP packet saved in the log. When the log of the RTP packet is not saved, the specifying unit 123 may compare the RTP packets transmitted and received between the network devices specified by the route data. The RTP packet to be compared may be a test packet generated for verification of the failure location, or a packet of a call generated at the time of comparison (a call different from the call in which voice deterioration has occurred).
　まず、ネットワーク機器内部が被疑箇所となる場合を説明する。特定部１２３は、ルートデータ１０５で特定されたネットワーク機器が受信するパケットと送信するパケットを比較する。特定部１２３は、ルートデータ１０５で特定されたネットワーク機器が受信するパケットと送信するパケットとが異なる場合、そのネットワーク機器を被疑箇所と特定する。 First, the case where the inside of the network device becomes a suspected part will be explained. The specifying unit 123 compares the packet received by the network device specified by the route data 105 with the packet transmitted. When the packet received by the network device specified by the route data 105 and the packet to be transmitted are different from each other, the specifying unit 123 identifies the network device as a suspected place.
　次に、ネットワーク機器間の伝送インタフェースが被疑箇所となる場合を説明する。特定部１２３は、所定のネットワーク機器が送信したＲＴＰパケットと、ルートデータ１０５において、その所定のネットワーク機器の次にＲＴＰパケットが経由したネットワーク機器が受信したＲＴＰパケットを比較する。特定部１２３は、所定のネットワーク機器が送信したＲＴＰパケットと、所定のネットワーク機器の次にＲＴＰパケットが経由したネットワーク機器が受信したＲＴＰパケットが異なる場合、所定のネットワーク機器と、所定のネットワーク機器の次にＲＴＰパケットが経由したネットワーク機器との間の伝送インタフェースを被疑箇所と特定する。 Next, the case where the transmission interface between network devices becomes a suspected part will be described. The specifying unit 123 compares the RTP packet transmitted by the predetermined network device with the RTP packet received by the network device to which the RTP packet has passed next to the predetermined network device in the route data 105. When the RTP packet transmitted by the predetermined network device and the RTP packet received by the network device via the RTP packet next to the predetermined network device are different from each other, the specifying unit 123 of the predetermined network device and the predetermined network device. Next, the transmission interface with the network device via which the RTP packet has passed is identified as the suspected part.
　なお、伝送装置群１５において通信方式等が変換される場合、特定部１２３は、伝送装置群１５を超えて送信されるパケットの比較を除外しても良い。 When the communication method or the like is converted in the transmission device group 15, the specific unit 123 may exclude the comparison of packets transmitted beyond the transmission device group 15.
　図７を参照して、被疑箇所を特定する例を説明する。図７において、各装置群を接続する線のうち、太線が、音声劣化が生じた呼のＲＴＰパケットが経由したルートである。発側加入ＳＩＰサーバ１１が送信したパケット群Ｐ１、発側網内ＳＩＰサーバ群１２の所定のネットワーク機器が受信したパケット群Ｐ２、発側網内ＳＩＰサーバ群１２の所定のネットワーク機器が送信したパケット群Ｐ３および発側ネットワーク装置群１３のネットワーク機器が受信したパケット群Ｐ４を示す。 An example of identifying a suspected part will be described with reference to FIG. 7. In FIG. 7, among the lines connecting each device group, the thick line is the route via the RTP packet of the call in which the voice deterioration has occurred. Packet group P1 transmitted by the originating SIP server 11, packet group P2 received by a predetermined network device of the originating network SIP server group 12, and packet transmitted by a predetermined network device of the originating network SIP server group 12. The packet group P4 received by the network equipment of the group P3 and the calling side network device group 13 is shown.
　パケット群Ｐ１、Ｐ２およびＰ３は同じである。パケット群Ｐ４は、パケット群Ｐ１、Ｐ２およびＰ３のそれぞれと比較して、３番目のパケットに欠損がある。図７に示す例では、発側網内ＳＩＰサーバ群１２のネットワーク機器と、発側ネットワーク装置群１３のネットワーク機器との間の伝送インタフェースにおいて故障が疑われることを示す。 The packet groups P1, P2 and P3 are the same. The packet group P4 has a defect in the third packet as compared with each of the packet groups P1, P2 and P3. In the example shown in FIG. 7, it is shown that a failure is suspected in the transmission interface between the network device of the SIP server group 12 in the originating network and the network device of the originating network device group 13.
　出力部１２４は、特定部１２３によって特定された被疑箇所を、出力する。出力部１２４は、被疑箇所の特定情報を、ディスプレイなどの出力装置９０６に表示しても良いし、担当者の端末にメッセージ等で通知しても良い。 The output unit 124 outputs the suspected portion specified by the specific unit 123. The output unit 124 may display the specific information of the suspected portion on an output device 906 such as a display, or may notify the terminal of the person in charge by a message or the like.
　図８を参照して、本発明の実施の形態にかかる処理装置１による処理方法を説明する。 The processing method by the processing apparatus 1 according to the embodiment of the present invention will be described with reference to FIG.
　まずステップＳ１において処理装置１は、音声劣化が生じた呼に関するＳＩＰ信号を収集する。 First, in step S1, the processing device 1 collects a SIP signal related to a call in which voice deterioration has occurred.
　ステップＳ２において処理装置１は、ステップＳ１で収集したＳＩＰ信号を参照して、各ＳＩＰ信号で指定されたＲＴＰパケットの送信先を特定する。処理装置１は、ＲＴＰパケットの送信先から、ＲＴＰパケットが経由したネットワーク機器の識別子を特定する。 In step S2, the processing device 1 refers to the SIP signal collected in step S1 and specifies the destination of the RTP packet specified by each SIP signal. The processing device 1 identifies the identifier of the network device through which the RTP packet has passed from the destination of the RTP packet.
　ステップＳ３において処理装置１は、ステップＳ２で特定されたネットワーク機器で送受信されたパケットを比較して、パケットの欠損が生じた箇所を特定する。 In step S3, the processing device 1 compares the packets sent and received by the network device specified in step S2, and identifies the location where the packet is missing.
　ステップＳ４において処理装置１は、ステップＳ２で特定されたパケット欠損箇所を、故障の被疑箇所として、出力して、処理を終了する。 In step S4, the processing device 1 outputs the packet missing portion specified in step S2 as a suspected fault location, and ends the processing.
　このような本発明の実施の形態に係る処理装置１によれば、音声劣化が生じた呼について、コンピュータ処理によりＳＩＰ信号からＲＴＰパケットのルートを特定し、そのルートで送受信されるＲＴＰパケットを比較することにより、故障の被疑箇所を特定することができる。これにより処理装置１は、ＩＰ電話における故障の被疑箇所の特定に要するコストを低減することができる。 According to the processing device 1 according to the embodiment of the present invention, the route of the RTP packet is specified from the SIP signal by computer processing for the call in which the voice is deteriorated, and the RTP packets transmitted and received by the route are compared. By doing so, it is possible to identify the suspected location of the failure. As a result, the processing device 1 can reduce the cost required for identifying the suspected failure location in the IP telephone.
　上記説明した本実施形態の処理装置１は、例えば、CPU（Central Processing Unit、プロセッサ）９０１と、メモリ９０２と、ストレージ９０３（HDD：Hard Disk Drive、SSD：Solid State Drive）と、通信装置９０４と、入力装置９０５と、出力装置９０６とを備える汎用的なコンピュータシステムが用いられる。このコンピュータシステムにおいて、CPU９０１がメモリ９０２上にロードされた処理プログラムを実行することにより、処理装置１の各機能が実現される。 The processing device 1 of the present embodiment described above includes, for example, a CPU (Central Processing Unit, processor) 901, a memory 902, a storage 903 (HDD: Hard Disk Drive, SSD: Solid State Drive), and a communication device 904. , A general purpose computer system including an input device 905 and an output device 906 is used. In this computer system, each function of the processing device 1 is realized by executing the processing program loaded on the memory 902 by the CPU 901.
　なお、処理装置１は、１つのコンピュータで実装されてもよく、あるいは複数のコンピュータで実装されても良い。また処理装置１は、コンピュータに実装される仮想マシンであっても良い。 The processing device 1 may be mounted on one computer or may be mounted on a plurality of computers. Further, the processing device 1 may be a virtual machine mounted on a computer.
　処理装置１のログラムは、HDD、SSD、USB（Universal Serial Bus）メモリ、CD (Compact Disc)、DVD (Digital Versatile Disc)などのコンピュータ読取り可能な記録媒体に記憶することも、ネットワークを介して配信することもできる。 The program of the processing device 1 can be stored in a computer-readable recording medium such as an HDD, SSD, USB (Universal Serial Bus) memory, CD (Compact Disc), DVD (Digital Versatile Disc), or distributed via a network. You can also do it.
　なお、本発明は上記実施形態に限定されるものではなく、その要旨の範囲内で数々の変形が可能である。 The present invention is not limited to the above embodiment, and many modifications can be made within the scope of the gist thereof.
　１　処理装置
　２　発端末
　３　着端末
　１１　発側加入ＳＩＰサーバ
　１２　発側網内ＳＩＰサーバ群
　１３　発側ネットワーク装置群
　１４　発側ＮＮＩ－ＧＷ群
　１５　伝送装置群
　１６　着側ＮＮＩ－ＧＷ群
　１７　着側ネットワーク装置群
　１８　着側網内ＳＩＰサーバ群
　１９　着側加入ＳＩＰサーバ
　５０　通話システム
　１０１　ログデータ
　１０２　収容ＳＩＰデータ
　１０３　アドレスデータ
　１０４　ＳＩＰ信号データ
　１０５　ルートデータ
　１０６　被疑箇所データ
　１２１　収集部
　１２２　生成部
　１２３　特定部
　１２４　出力部
　９０１　CPU
　９０２　メモリ
　９０３　ストレージ
　９０４　通信装置
　９０５　入力装置
　９０６　出力装置 1 Processing device 2 Departure terminal 3 Departure terminal 11 Departure side subscription SIP server 12 Departure side network SIP server group 13 Departure side network device group 14 Departure side NNI-GW group 15 Transmission device group 16 Arrival side NNI-GW group 17 Arrival side Network device group 18 End-side network SIP server group 19 End-side subscription SIP server 50 Call system 101 Log data 102 Containment SIP data 103 Address data 104 SIP signal data 105 Route data 106 Suspicious location data 121 Collection unit 122 Generation unit 123 Specific unit 124 Output unit 901 CPU
902 Memory 903 Storage 904 Communication device 905 Input device 906 Output device

Claims (7)

  1. 　音声劣化が生じた発端末および着端末間の呼について、前記発端末および前記着端末間で経由するネットワーク機器間で送受信されたＳＩＰ信号を収集する収集部と、
    　収集された前記ＳＩＰ信号において、前記呼に関するＲＴＰパケットの送信先として指定されたネットワーク機器の識別子を抽出して、ＲＴＰパケットが経由したネットワーク機器の識別子を特定するルートデータを生成する生成部と、
    　前記ルートデータで特定された前記ネットワーク機器が送受信したＲＴＰパケットを比較して、ＲＴＰパケットの欠損が生じた被疑箇所を特定する特定部
    　を備える処理装置。     A collection unit that collects SIP signals transmitted and received between the calling terminal and the network device passing between the calling terminal and the incoming terminal for a call between the outgoing terminal and the incoming terminal in which voice deterioration has occurred.
    A generator that extracts the identifier of the network device designated as the destination of the RTP packet related to the call from the collected SIP signal and generates route data for specifying the identifier of the network device through which the RTP packet has passed.
    A processing device including a specific unit that compares RTP packets sent and received by the network device specified by the route data and identifies a suspected location where a loss of the RTP packet has occurred.
  2. 　所定の機能を実現するために複数のネットワーク機器が多重化されている場合、前記ＳＩＰ信号において、前記ＳＩＰ信号によって制御されるＲＴＰパケットの送信先として、多重化された前記複数のネットワーク機器のうちの一つのネットワーク機器の識別子が、指定される
    　請求項１に記載の処理装置。     When a plurality of network devices are multiplexed in order to realize a predetermined function, among the plurality of network devices multiplexed as a destination of an RTP packet controlled by the SIP signal in the SIP signal. The processing device according to claim 1, wherein the identifier of one of the network devices is specified.
  3. 　前記収集部は、ネットワーク機器間で送受信されたＳＩＰ信号のログデータから、音声劣化が生じた発端末および着端末間の呼に関するＳＩＰ信号を収集する
    　請求項１または２に記載の処理装置。     The processing device according to claim 1 or 2, wherein the collecting unit collects a SIP signal relating to a call between a calling terminal and an incoming terminal in which voice deterioration has occurred from log data of SIP signals transmitted and received between network devices.
  4. 　前記特定部は、前記ルートデータで特定されたネットワーク機器が受信するパケットと送信するパケットとが異なる場合、前記ネットワーク機器を前記被疑箇所と特定する
    　請求項１ないし３のいずれか１項に記載の処理装置。     The specific unit according to any one of claims 1 to 3, wherein when the packet received by the network device specified by the route data is different from the packet transmitted, the specific unit identifies the network device as the suspected location. Processing equipment.
  5. 　前記生成部は、前記ルートデータにおいて、ＲＴＰパケットが経由したネットワーク機器の識別子と順序を特定し、
    　前記特定部は、所定のネットワーク機器が送信したＲＴＰパケットと、前記所定のネットワーク機器の次にＲＴＰパケットが経由したネットワーク機器が受信したＲＴＰパケットが異なる場合、所定のネットワーク機器と、前記所定のネットワーク機器の次にＲＴＰパケットが経由したネットワーク機器との間の伝送インタフェースを前記被疑箇所と特定する
    　請求項１ないし３のいずれか１項に記載の処理装置。     In the route data, the generator identifies the identifier and order of the network device through which the RTP packet has passed, and determines the identifier and order.
    When the RTP packet transmitted by the predetermined network device and the RTP packet received by the network device via the RTP packet next to the predetermined network device are different, the specific unit determines the predetermined network device and the predetermined network. The processing device according to any one of claims 1 to 3, which identifies the transmission interface between the device and the network device via which the RTP packet has passed as the suspected location.
  6. 　コンピュータが、劣化が生じた発端末および着端末間の呼について、前記発端末および前記着端末間で経由するネットワーク機器間で送受信されたＳＩＰ信号を収集するステップと、
    　前記コンピュータが、収集された前記ＳＩＰ信号において、前記呼に関するＲＴＰパケットの送信先として指定されたネットワーク機器の識別子を抽出して、ＲＴＰパケットが経由したネットワーク機器の識別子を特定するルートデータを生成するステップと、
    　前記コンピュータが、前記ルートデータで特定された前記ネットワーク機器が送受信したＲＴＰパケットを比較して、ＲＴＰパケットの欠損が生じた被疑箇所を特定するステップ
    　を備える処理方法。     A step in which a computer collects SIP signals transmitted and received between a network device that passes between the outgoing terminal and the incoming terminal for a call between the outgoing terminal and the incoming terminal that have deteriorated.
    In the collected SIP signal, the computer extracts the identifier of the network device designated as the destination of the RTP packet related to the call, and generates route data for specifying the identifier of the network device through which the RTP packet has passed. Steps and
    A processing method comprising a step in which the computer compares RTP packets sent and received by the network device specified by the route data, and identifies a suspected location where the RTP packet is missing.
  7. 　コンピュータを、請求項１ないし請求項５のいずれか１項に記載の処理装置として機能させるための処理プログラム。 A processing program for making a computer function as the processing apparatus according to any one of claims 1 to 5.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007068093A (en) * 2005-09-02 2007-03-15 Nippon Telegraph & Telephone East Corp Ip telephone failure zone carving system and method
JP2007116516A (en) * 2005-10-21 2007-05-10 Mitsubishi Electric Information Systems Corp Integrated monitor system and monitor program

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007068093A (en) * 2005-09-02 2007-03-15 Nippon Telegraph & Telephone East Corp Ip telephone failure zone carving system and method
JP2007116516A (en) * 2005-10-21 2007-05-10 Mitsubishi Electric Information Systems Corp Integrated monitor system and monitor program

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