JP2014003477A - Remote management device, system, method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To instantly and safely control and manage a line terminating device from a remote place.SOLUTION: When a detector 12 detects a call to a call center 7 made using a telephone set 5 connected to xGW 1, a session construction part 13 constructs an SIP session and a control session between the xGW 1 and a communication provider server 2, and the communication provider server 2 transmits a command using the constructed control session to control and manage the xGW 1. This allows for instant management from a remote place in accordance with a failure report from a user, without clear construction processing of the control session from the communication provider server 2.

Description

  The present invention relates to a technique for remotely controlling and managing a line termination device.

  As a remote control / management system for a line termination device, a system called TR-069 is used by many telecommunications carriers including Europe and the United States (Non-patent Document 1). In TR-069, the set values of various parameters (TR-098) can be confirmed and set.

  In general, in any line termination device provided by any communication carrier, connections from the outside are blocked by a firewall or the like. For this reason, TR-069 stipulates that the line terminator periodically connects to the server (generally called polling). When connecting to the server, the line termination device transmits a packet to the server to establish an HTTP session. The server side responds to the transmitted packet only when there is a request for a specific line termination device (for example, “I want to change the setting of a certain variable”, “I want to perform a certain operation”, etc.). In TR-069, specifications for controlling and managing terminals connected to the local network side of the line termination device are also determined.

“TR-069 CPE WAN Management Protocol”, [online], July 2011, The Broadband Forum, [searched June 6, 2012], Internet <URL: http://www.broadband-forum.org/ technical / download / TR-069_Amendment-4.pdf>

  However, TR-069 has a problem that the load on the communication carrier server increases because all the line termination devices distributed by the communication carrier are connected to the communication carrier server at regular intervals by polling. In response to this issue, the load on the carrier server can be reduced by increasing the polling interval. However, if the polling interval is long, immediacy is lost and immediate control and management cannot be performed. There is. For example, when a failure report from the user arrives at the call center of the communication carrier, even when a request is sent from the communication carrier server side to the line termination device, connection from the line termination device must be waited for. Therefore, the longer the polling interval, the lower the service quality (customer satisfaction).

  Also, by always opening a port with a line terminator for management and control, it is possible to access the line terminator from the outside instantly, but the opened port number is known to malicious users. If this happens, malicious control will be performed from a remote location, resulting in a problem of loss of safety.

  The present invention has been made in view of the above, and an object thereof is to immediately and safely control and manage a line termination device from a remote location.

  A remote management device according to a first aspect of the present invention is a remote management device that provides a telephone service by connecting a telephone and receives and executes a remote control command from an operator server. A detecting means for detecting that a call has been made, and when the detecting means detects a call to the specific telephone number, a control session is established by transmitting a signal for establishing a control session to the provider server. And a construction means for receiving and executing a remote control command transmitted using the control session.

  In the remote management apparatus, when the construction unit receives a SIP message in which a character string indicating control / management is described from the provider server, the construction unit checks the source of the SIP message, and A signal for constructing a control session is transmitted to.

  A remote management system according to a second aspect of the present invention includes a business server and a remote management device that connects a telephone to provide a telephone service and receives and executes a remote control command from the business server. The remote management device detects the call from the telephone to a specific telephone number, and the operator detects the call to the specific telephone number when the detection means detects a call to the specific telephone number. A construction means for constructing a control session by transmitting a signal for constructing a control session to the server, and an execution means for receiving and executing a remote control command transmitted using the control session, The article trader server includes a control unit that transmits a remote control command using the control session, and controls and manages the remote management device.

  In the remote management system, the provider server includes a construction unit configured to transmit a SIP message in which a character string indicating control and management and a transmission source are described to the remote management device, and to construct a SIP session. When the management device construction unit receives a SIP message in which a character string indicating control / management is described from the provider server, the management device checks the source of the SIP message and then controls the provider server. A signal for constructing a session is transmitted.

  In the remote management system, when the operator server cannot establish a SIP session with the remote management device, another remote management device connected to the same operator equipment as the remote management device And the carrier server has a determination means for isolating the location of the failure based on whether or not the SIP session has been established with the other remote management device. Features.

  A remote management method according to a third aspect of the present invention is a remote management method using a business server and a remote management device that connects a telephone to provide a telephone service and receives and executes a remote control command from the business server. When the remote management device detects that a call is made from the telephone to a specific telephone number, and when the call to the specific telephone number is detected in the detecting step, the provider server Transmitting a signal for constructing a control session to the control server, and receiving and executing a remote control command transmitted using the control session, the provider server And a step of transmitting a remote control command using the control session, and controlling and managing the remote management device.

  In the remote management method, a SIP message in which a character string indicating control and management and a transmission source by the provider server are described is transmitted to the remote management device, and a SIP session is established. When a SIP message in which a character string indicating control / management is described is received from the provider server, a signal for establishing a control session is sent to the provider server after collating the source of the SIP message. And a step of transmitting.

  A remote management program according to a fourth aspect of the present invention operates a computer as the remote management device.

  According to the present invention, the line terminator can be remotely controlled and managed immediately and safely.

It is a whole lineblock diagram showing the composition of the remote management system in this embodiment. It is a sequence diagram which shows the flow of a process when a user calls a call center from the telephone connected to xGW. It is a sequence diagram which shows the flow of a process when a user calls a call center from a mobile phone. It is a flowchart which shows the flow of the process which performs control / management of xGW, and fault isolation based on the presence or absence of SIP session construction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram showing a configuration of a remote management system in the present embodiment.

  The remote management system according to the present embodiment includes a remotely managed xGW 1 and a managing communication carrier server 2. The xGW 1 is a line termination device that provides a communication service to a home network or an office network, and is installed in a user's home or office. The line terminating device for home is called a home gateway (HGW), and the line terminating device for office is called an office gateway (OGW). Here, it is written as xGW without distinguishing between home use and office use. The telephone 5 is connected to the xGW 1, a SIP session is established between the xGW 1 and the call center 7 using the SIP server 3, and a telephone call can be made between the telephone 5 and the call center 7.

  The xGW 1 includes a telephone function unit 11, a detection unit 12, a session construction unit 13, and a command processing unit 14.

  The telephone function unit 11 connects the telephone 5 to function as an IP telephone and provides a telephone service.

  The detection unit 12 detects that the user has made a call from the telephone 5 to the call center 7. The telephone number of the call center 7 is stored in the xGW 1 in advance. Calling the call center 7 may be detected by comparing the telephone number input by the telephone function unit 11 with the telephone number of the call center 7, or the telephone number in the SIP message transmitted by the session construction unit 13 And the telephone number of the call center 7 may be compared and detected. Alternatively, it may be detected when the call connection with the call center 7 is completed.

  The session constructing unit 13 constructs a SIP session or a control session with another device. Specifically, when a call is made, a SIP session is established with the destination (for example, the call center 7), and when the detection unit 12 detects a call to the call center 7, the communication with the carrier server 2 is established. SIP session and control session are established. When the session construction unit 13 receives an SIP INVITE message in which a character string indicating control / management is described from the carrier server 2, the session construction unit 13 collates the originator of the INVITE message, Build a control session during In the present embodiment, TR-069 is used as the control session.

  The command processing unit 14 executes and processes commands for information collection and control that are transmitted and received using a control session established between the xGW 1 and the communication carrier server 2.

  On the other hand, the communication carrier server 2 includes a session construction unit 21, a control unit 22, and a determination unit 23.

  The session constructing unit 21 constructs a SIP session and a control session between the xGW 1 and the communication carrier server 2. When a SIP session is established with xGW1, there are cases where xGW1 transmits an INVITE message and communication carrier server 2 transmits an INVITE message. When constructing a control session, only xGW1 transmits a control session construction message.

  The control unit 22 transmits commands for information collection and control using a control session established between the xGW 1 and the communication carrier server 2, and controls devices connected to the local network side of the xGW 1 or xGW 1 .

  The determination unit 23 determines whether or not a failure has occurred in the communication path to the xGW 1 or another xGW based on whether or not the SIP session has been established with the xGW 1 or another xGW. Carry out the separation.

  The SIP server 3 registers a telephone number and an IP address in association with each other, receives the telephone number, and returns an IP address corresponding to the received telephone number.

  In addition, each part with which xGW1 and the communication carrier server 2 are provided is good also as what is comprised by the computer provided with the arithmetic processing apparatus, the memory | storage device, etc., and the process of each part is performed by a program. This program is stored in a storage device included in the xGW 1 and the telecommunications carrier server 2, and can be recorded on a recording medium such as a magnetic disk, an optical disk, or a semiconductor memory, or provided through a network.

  Next, the flow of processing of the remote management system in this embodiment will be described.

  FIG. 2 is a sequence diagram showing the flow of processing when a call is made from the telephone 5 connected to the xGW 1 to the call center 7.

  First, as an initial setting, when xGW1 is installed and connected to network 100, xGW1 obtains an IP address from a DHCP server (not shown) (step S101), and xGW1 obtains the obtained IP address and its own telephone. The number is registered in the SIP server 3 (step S102). Through these initial setting processes, the xGW 1 communicates with the network 100 and can provide a telephone service. It is assumed that xGW 1 holds the telephone number of the call center 7 and the telephone number of the communication carrier server 2 in advance.

  Here, some trouble occurs (step S103), and the user reports the trouble to the call center 7.

  When the user makes a call to the call center 7 using the telephone 5 connected to the xGW 1, the xGW 1 transmits the telephone number of the call center 7 to the SIP server 3 (step S 104), and the IP address of the call center 7 from the SIP server 3. (Step S105), and an SIP INVITE message is transmitted to the call center 7 (step S106). At this time, in the <m> tag of the SDP (Session Description Protocol) of the INVITE message, a character string “audio” representing a session for performing a voice call is described.

  The detection unit 12 compares the telephone number of the destination of the INVITE message with the telephone number of the call center 7 that is held in advance, and if they match, detects that a call has been made to the call center 7 (step S107). If the destination telephone number does not match the telephone number of the call center 7, normal telephone service is performed.

  When a response message (200 OK) is returned from the call center 7 (step S108), a SIP session is established between the xGW 1 and the call center 7, and a telephone call can be made between the telephone 5 and the call center 7 (step S108). S109).

  Further, since the detection unit 12 detects a call to the call center 7 in step S107, the session construction unit 13 transmits the telephone number of the communication carrier server 2 to the SIP server 3 (step S110), and the SIP server 3 The IP address of the telecommunications carrier server 2 is acquired from (step S111), and the SIP INVITE message is transmitted to the telecommunications carrier server 2 (step S112). At this time, in the <m> tag of the SDP of the INVITE message, a character string “maintenance” representing a session for performing control and management is described.

  A response message (200 OK) is returned from the communication carrier server 2 (step S113), and a SIP session is established between the xGW 1 and the communication carrier server 2.

  After the SIP session is established, the xGW 1 transmits a control session establishment message to the communication carrier server 2 (step S114), receives a response message from the communication carrier server 2, and establishes a control session (step S115). Since the construction of the control session starts from xGW1, it is not necessary to change the specification of TR-069 used as the control session. Further, it is not necessary to always open the port for controlling and managing xGW1.

  The operator of the call center 7 that has received the defect report from the user operates the telecommunications carrier server 2 from the operator terminal (step S116), and controls and manages the xGW 1 from the telecommunications carrier server 2 using the control session ( Step S117). The number of xGWs that establish control sessions with the carrier server 2 is considered to be the same as the number of users who are calling the call center 7. For this reason, it is assumed that there are very many xGWs constructing control sessions with the carrier server 2, and the operator constructs with the carrier server 2 using the telephone number of the user's xGW1 as a query. The specified SIP session is specified, and the corresponding control session is specified. In the control / management of xGW1, it is possible to control / manage the terminals in the local network under the control of xGW1 within the specification of TR-069. The technique described in Japanese Patent Application Laid-Open No. 2009-302623 can be used to identify the location where a problem relating to a terminal in the local network occurs.

  When the control / management is completed, the communication carrier server 2 transmits a control session end message to the xGW 1 (step S118), and the xGW 1 transmits a response message to end the control session (step S119).

  Also, in the SIP session established between the xGW 1 and the telecommunications carrier server 2, the telecommunications carrier server 2 transmits a BYE message (step S120), and the xGW 1 returns 200 OK and ends (step S121). .

  When the call between the user and the call center 7 ends, a BYE message and 200 OK are transmitted and received, and the SIP session between the xGW 1 and the call center 7 ends (steps S122 and S123). Note that the SIP session may be terminated from the xGW1 side.

  Next, processing when a user calls the call center 7 from a communication terminal such as a mobile phone not connected to the xGW 1 will be described. When a call is made to the call center 7 using a mobile phone that is not connected to the xGW 1, the detection unit 12 cannot detect a call to the call center 7. Therefore, in the present embodiment, after a SIP session for control / management is constructed from the telecommunications carrier server 2 side, a control session is constructed from the xGW1 side.

  FIG. 3 is a sequence diagram showing a processing flow when the user makes a call from the mobile phone to the call center 7. In FIG. 3, it is assumed that the IP address has already been assigned to xGW 1 from the DHCP server, and the IP address and telephone number of xGW 1 are already registered in SIP server 3.

  When some trouble occurs, the user calls the call center 7 using a mobile phone and declares the trouble (step S201).

  The operator of the call center 7 that has received a defect report from the user operates the operator terminal and searches for a SIP session established between the xGW 1 and the carrier server 2 using the user's xGW 1 telephone number as a query. (Step S202). However, since the user does not use the telephone 5 connected to the xGW 1 and the detection unit 12 cannot detect that the user has made a call to the call center 7, the session construction unit 13 communicates with the communication carrier server 2. There is no SIP session established between them.

  Since the SIP session between the xGW 1 and the carrier server 2 is not found, the session construction unit 21 of the carrier server 2 transmits the telephone number of the xGW 1 to the SIP server 3 (step S203). The IP address of xGW1 is acquired (step S204), a SIP INVITE message is transmitted from the carrier server 2 to xGW1 (step S205), and an attempt is made to construct a SIP session. At this time, in the <m> tag of the SDP of the INVITE message, a character string indicating control / management such as “maintenance” is described.

  If a SIP session is started from the telecommunications carrier server 2 side so that xGW1 can be controlled and managed, a third party other than the telecommunications carrier can acquire and change the setting of the xGW1. There is. Therefore, in order to prevent a third party from controlling and managing xGW1, the telephone number of the communication carrier server 2 is described in the <from> tag in the INVITE message, and the session construction unit 13 from> tag is checked against the telephone number of the carrier server 2 held by the xGW 1 to confirm that the connection partner is correct. SIP INVITE messages are limited to those sent by xGW for telephone calls and those sent by carrier server 2, and SIP INVITE messages are exchanged over the carrier's closed network. It is guaranteed that there will be no misrepresentation.

  When a SIP session is established between the xGW 1 and the carrier server 2, since “maintenance” is described in the <m> tag of the SDP, the session construction unit 13 of the xGW 1 communicates with the carrier server 2. In the meantime, a control session is established, and the telecommunications carrier server 2 controls and manages the xGW 1 (step S206).

  When a SIP session cannot be established between the xGW 1 and the telecommunications carrier server 2, the network map stored in the telecommunications carrier server 2 is used and the facilities of the telecommunications carrier to which the xGW 1 is connected (for example, List other xGW phone numbers in the neighborhood that are connected to the OLT, splitter, etc.).

  The telephone number of another xGW listed up is transmitted to the SIP server 3 (step S301), the IP address of another xGW is acquired from the SIP server 3 (step S302), and the SIP server 3 transmits the SIP address to another xGW. Is transmitted (step S303), and an attempt is made to establish a SIP session between another xGW and the carrier server 2.

  Then, fault isolation is performed based on whether or not a SIP session has been established with another xGW (step S304).

  FIG. 4 is a flowchart showing the flow of processing for controlling / managing xGW 1 and isolating faults based on whether or not a SIP session is established.

  First, when the operator receives a defect report from the user, the operator searches for a SIP session using the telephone number of xGW1 as a query, and checks whether a SIP session is established between xGW1 and the carrier server 2 (step S401). ).

  If a SIP session is established between the xGW 1 and the carrier server 2 (YES in step S401), the control session is used to control / manage the xGW 1 (step S406).

  When the SIP session is not established between xGW1 and the carrier server 2 (NO in step S401), the carrier server 2 attempts to establish a SIP session between the xGW1 and the carrier server 2. (Step S402).

  If a SIP session can be established between the xGW 1 and the carrier server 2 (YES in step S403), the control session is used to control / manage the xGW 1 (step S406).

  If a SIP session cannot be established between the xGW 1 and the telecommunications carrier server 2 (NO in step S403), the telecommunications carrier to which the xGW 1 is connected using the network map stored in the telecommunications carrier server 2 An attempt is made to establish a SIP session between another xGW in the vicinity connected to the facility and the carrier server 2 (step S404).

  If a SIP session can be established between another xGW and the telecommunications carrier server 2 (YES in step S405), the light up to the user's home or the equipment of the telecommunications carrier to which the user home and another xGW are connected There is a problem with the fiber (step S407).

  If a SIP session cannot be established between the xGW 1 and the telecommunications carrier server 2 (NO in step S405), there is a problem with the equipment of the telecommunications carrier (step S408).

  As described above, according to the present embodiment, when the detection unit 12 detects that a call is made to the call center 7 using the telephone 5 connected to the xGW 1, the session construction unit 13 communicates. By establishing a SIP session and a control session with the carrier server 2, sending a command using the control session created by the carrier server 2, and controlling and managing the xGW 1, the carrier server 2 Even if a process for explicitly constructing a control session is not performed, remote management is possible immediately in accordance with a defect report from the user. Further, since no control session is established from the telecommunications carrier server 2 side, the xGW 1 does not always have to open a port for control and management, and safety is ensured.

  According to the present embodiment, when a user makes a call to the call center 7 using a communication device that is not connected to the xGW 1 such as a mobile phone, the SIP session between the xGW 1 and the carrier server 2 cannot be searched. Creates a SIP session by describing “maintenance” in the <m> tag of the SDP from the carrier server 2, and xGW1 receives an SIP message in which “maintenance” is described in the <m> tag of the SDP Then, after collating the telephone number in the <from> tag of the SIP message with the telephone number of the carrier server 2, the xGW 1 makes a call to the call center 7 by constructing a control session with the carrier server 2. Even if it cannot be detected, a control session is established between xGW 1 and carrier server 2 safely. Management from a remote becomes possible.

  In addition, when a SIP session cannot be established for the xGW 1 from the carrier server 2 side, a SIP session is established by attempting to establish a SIP session for another xGW connected to the same carrier equipment as the xGW 1 The location of the failure can be identified based on whether or not it is possible.

1 ... xGW
DESCRIPTION OF SYMBOLS 11 ... Telephone function part 12 ... Detection part 13 ... Session construction part 14 ... Command processing part 2 ... Communication carrier server 21 ... Session construction part 22 ... Control part 23 ... Determination part 3 ... Server 5 ... Telephone 7 ... Call center 100 ... Network

Claims (8)

A remote management device that connects a telephone to provide a telephone service and accepts and executes a remote control command from an operator server,
Detecting means for detecting a call from the telephone to a specific telephone number;
Construction means for constructing a control session by transmitting a signal for constructing a control session to the provider server when the detection means detects a call to the specific telephone number;
Execution means for receiving and executing a remote control command transmitted using the control session;
A remote management device comprising:   When the construction means receives a SIP message in which a character string indicating control / management is described from the provider server, the construction means checks a source of the SIP message, and then sends a control session to the provider server. The remote management apparatus according to claim 1, wherein a signal to be constructed is transmitted. A remote management system having a business server and a remote management device that connects a telephone to provide a telephone service and receives and executes a remote control command from the business server,
The remote management device is:
Detecting means for detecting a call from the telephone to a specific telephone number;
Construction means for constructing a control session by transmitting a signal for constructing a control session to the provider server when the detection means detects a call to the specific telephone number;
Execution means for receiving and executing a remote control command transmitted using the control session;
The provider server is
A remote management system comprising control means for controlling and managing the remote management device by transmitting a remote control command using the control session. The provider server has a construction means for sending a SIP message in which a character string indicating control and management and a transmission source are described to the remote management device to construct a SIP session,
The construction means of the remote management device, when receiving a SIP message in which a character string indicating control / management is described from the provider server, after checking the source of the SIP message, 4. The remote management system according to claim 3, wherein a signal for establishing a control session is transmitted. The provider server constructing means, when the SIP session cannot be established with the remote management device, the SIP session between the remote management device and another remote management device connected to the same provider equipment Trying to build
5. The remote management system according to claim 4, wherein the provider server includes a determination unit that determines a failure occurrence location based on whether or not a SIP session can be established with the other remote management device. . A remote management method by a business server and a remote management device that provides telephone service by connecting a telephone and receives and executes a remote control command from the business server,
According to the remote management device,
Detecting a call from the telephone to a specific telephone number;
A step of constructing a control session by transmitting a signal for constructing a control session to the operator server when detecting a call to the specific telephone number in the detecting step;
Receiving and executing a remote control command transmitted using the control session;
By the provider server,
Transmitting a remote control command using the control session, and controlling and managing the remote management device. Transmitting a SIP message in which a character string indicating control and management and a transmission source are described by the provider server to the remote management device, and establishing a SIP session;
When a SIP message in which a character string indicating control / management is described is received from the provider server by the remote management device, a control session is performed on the provider server after collating the source of the SIP message The remote management method according to claim 6, further comprising a step of transmitting a signal for constructing.   A remote management program for operating a computer as the remote management device according to claim 1.

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