WO2014101851A1 - 本地存活的增强方法及终端 - Google Patents

本地存活的增强方法及终端 Download PDF

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Publication number
WO2014101851A1
WO2014101851A1 PCT/CN2013/090800 CN2013090800W WO2014101851A1 WO 2014101851 A1 WO2014101851 A1 WO 2014101851A1 CN 2013090800 W CN2013090800 W CN 2013090800W WO 2014101851 A1 WO2014101851 A1 WO 2014101851A1
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WIPO (PCT)
Prior art keywords
cpe
dns
terminal
response message
domain name
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PCT/CN2013/090800
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English (en)
French (fr)
Inventor
谢根茂
周懿
Original Assignee
华为技术有限公司
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Publication date
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Publication of WO2014101851A1 publication Critical patent/WO2014101851A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1069Session establishment or de-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/45Network directories; Name-to-address mapping
    • H04L61/4505Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1101Session protocols
    • H04L65/1104Session initiation protocol [SIP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80Responding to QoS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection

Definitions

  • the present invention belongs to the field of communications, and in particular, to an enhanced method and terminal for local survival.
  • the headquarters controls the calls of the terminals it manages.
  • the terminals can enjoy the services provided by the headquarters (such as conferences and recordings).
  • the voice network can take over the call of the branch terminal, which is called local survival.
  • the branch session initiation protocol (English: session initiation protocol, SIP for short) is registered to the headquarters server. If the branch voice network supports local survival, the branch SIP terminal registers with the branch voice after the headquarters voice network fails. After the branch SIP terminal is registered to the access device of the branch voice network, the branch SIP terminal can implement the internal call of the branch voice network and connect to the public switched telephone network through the access device of the branch voice network.
  • Public switched telephone network referred to as: PSTN
  • the Internet Protocol (English: Internet Protocol, IP for short) terminal obtains the call server address through local configuration or domain name resolution, and then deploys the call server address through the configuration management interface of the IP terminal.
  • IP terminal In the headquarters + branch mode, the IP terminal is usually used.
  • the domain name system (English: Domain Name System, DNS for short) server obtains the call server address, but the IP terminal cannot obtain the address of the customer terminal device (English: Customer Premise Equipment, CPE for short) through the DNS, so the CPE cannot be implemented. Live locally. Summary of the invention
  • the present invention is implemented as a local survival enhancement method, the method comprising: an internet protocol IP terminal sending a service resource record to a domain name system DNS server in a headquarters server
  • the IP terminal receives the response message of the DNS-SRV request returned by the client terminal device CPE, and the response message includes: a SIP server domain name of the CPE;
  • the IP terminal initiates an address A query to the CPE, where the A query includes: a SIP Server domain name of the CPE;
  • the IP terminal Receiving, by the IP terminal, the response message of the A query that is returned by the CPE, where the response message includes: an IP address corresponding to a SIP Server domain name of the CPE;
  • the IP terminal initiates a service to a headquarters server
  • the IP terminal When the headquarters server is faulty, the IP terminal initiates a SIP call to the CPE, where the SIP call includes: an IP address corresponding to the SIP server domain name of the CPE, and the service is switched to the CPE by the SIP call to achieve local survival. .
  • a local surviving support system includes: a client terminal device CPE, a headquarters server, and an IP terminal;
  • the CPE is configured to detect a service resource record DNS-SRV request sent by the IP terminal to a DNS server of the headquarters server;
  • the CPE is configured to: after determining that the IP terminal sends the DNS-SRV request, return a response message of the DNS-SRV request to the IP terminal, where the response message includes: a SIP server domain name of the CPE;
  • the IP terminal is configured to send an A query message to the CPE, where the A query message includes: a SIP server domain name of the CPE;
  • the CPE is configured to receive an A query message sent by an IP terminal
  • the CPE is configured to obtain an IP address corresponding to the SIP server domain name of the CPE, and return a response message of the A query message to the IP terminal, where the response message of the A query message includes: an IP address corresponding to the SIP server domain name of the CPE address.
  • the CPE is specifically configured to:
  • the CPE After determining that the IP terminal sends the DNS-SRV request, the CPE receives the response message of the DNS-SRV request returned by the DNS server, inserts the SIP Server domain name of the CPE into the response message, and returns the message to the IP terminal. Response message.
  • the CPE is specifically configured to:
  • the CPE After determining that the IP terminal does not receive the response message of the DNS-SRV request returned by the DNS server within a set time, the CPE returns a response message of the DNS-SRV request to the IP terminal after determining that the IP terminal sends the DNS-SRV request.
  • the response message includes: a SIP Server domain name of the CPE.
  • the third aspect provides an internet protocol IP terminal, where the IP terminal includes:
  • a sending unit configured to send a DNS-SRV request to a domain name system DNS server in the headquarters server;
  • a receiving unit configured to receive a response message of the DNS-SRV request returned by the client terminal device CPE, where the response message includes: a SIP server domain name of the CPE;
  • the sending unit is further configured to initiate an address A query to the CPE, where the A query includes: a SIP Server domain name of the CPE;
  • the receiving unit is configured to receive a response message of the A query returned by the CPE, where the ringing
  • the message includes: an IP address corresponding to the SIP server domain name of the CPE;
  • a business unit configured to initiate a service to a headquarters server
  • the switching unit is configured to initiate a SIP call to the CPE when the headquarters server is faulty, where the SIP call includes: an IP address corresponding to the SIP Server domain name of the CPE, and the service is switched to the CPE by using the SIP call. Realize local survival.
  • a client terminal device CPE includes:
  • a detecting unit configured to detect a DNS-SRV request sent by the IP terminal to a DNS server of the headquarters server
  • a sending unit configured to: after the detecting unit determines that the IP terminal sends the DNS-SRV request, return a response message of the DNS-SRV request to the IP terminal, where the response message includes: a SIP server domain name of the CPE;
  • a receiving unit configured to receive an A query message sent by the IP terminal, where the A query message includes: a SIP server domain name of the CPE; the sending unit is further configured to return a response message of the A query message to the IP terminal, where the A query The response message of the message includes: an IP address corresponding to the SIP Server domain name of the CPE.
  • the sending unit is specifically configured to:
  • the CPE After determining that the IP terminal sends the DNS-SRV request, the CPE receives the response message of the DNS-SRV request returned by the DNS server, inserts the SIP Server domain name of the CPE into the response message, and returns the message to the IP terminal. Response message.
  • the sending unit is specifically configured to:
  • the CPE After determining that the IP terminal sends a DNS-SRV request, the CPE does not receive the DNS within the set time.
  • the response message of the DNS-SRV request is returned by the server, the response message of the DNS-SRV request is returned to the IP terminal, where the response message includes: a SIP Server domain name of the CPE.
  • the technical solution of the present invention has the advantage that CPE supports local survival.
  • FIG. 1 is a flowchart of a method for enhancing local survival according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of an IP terminal according to an embodiment of the present invention
  • FIG. 4 is a structural diagram of a CPE provided by an embodiment of the present invention.
  • FIG. 5 is a structural diagram of hardware of an IP terminal according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of a CPE hardware provided by an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a local surviving support system according to an embodiment of the present invention.
  • a method for enhancing the local survival provided by the specific embodiment of the present invention is implemented by an IP terminal.
  • the method is as shown in FIG. 1 and includes:
  • the IP terminal sends a DNS-SRV request to a DNS server in the headquarters server.
  • the IP terminal receives a response message of the DNS-SRV request returned by the CPE, where the response message includes: a SIP server domain name of the CPE;
  • the IP terminal sends an address (English: address, abbreviation: A) to the CPE to query the message, where the A query message includes: a SIP server domain name of the CPE; 514.
  • the IP terminal initiates a service to the headquarters server.
  • the IP terminal initiates a SIP call to the CPE.
  • the SIP call includes: an IP address corresponding to the SIP server domain name of the CPE, and the service is switched to the CPE through the SIP call.
  • the ontology survives.
  • the method for detecting the fault of the headquarters server can be various.
  • the heartbeat detection method is used to detect the fault of the headquarters server.
  • the fault detection message can be used to detect whether the headquarters server is faulty.
  • the service resource record (A DNS RR for specifying the location of Services, DNS-SRV): Specifically used to give a list of server addresses that implement a certain service and protocol in a domain. For details, see RFC 2782.
  • the method provided by the specific embodiment of the present invention obtains the SIP server domain name of the CPE through the response message of the DNS-SRV request, and then initiates the A query message to obtain the IP address corresponding to the SIP server domain name, so that when the IP terminal initiates the service and the headquarters server fails, The IP terminal switches the service to the CPE for local survival.
  • the SIP server domain name of the CPE is the configured domain name.
  • the IP address corresponding to the SIP server domain name can be statically configured or dynamically obtained.
  • the dynamic IP address can be obtained after the CPE is powered on.
  • the DHCP server sends a DHCP request message to the dynamic host configuration protocol (English: Dynamic Host Configuration Protocol, DHCP for short), and the DHCP server sends a DHCP response message to the DHCP request message, where the DHCP response message carries the SIP server domain name corresponding to the CPE. Dynamic IP address.
  • a specific implementation manner of the present invention further provides a local survival support method, which is shown in FIG. 2, This is done by the CPE.
  • the method is shown in Figure 2. It includes:
  • the CPE detects a DNS-SRV request sent by the IP terminal to a DNS server of the headquarters server.
  • the CPE After determining that the IP terminal sends the DNS-SRV request, the CPE returns a response message of the request to the IP terminal, where the response message includes: a SIP server domain name of the CPE;
  • the CPE receives the A query message sent by the IP terminal, where the A query message includes:
  • the CPE obtains an IP address corresponding to the SIP server domain name of the CPE, and returns a response message of the A query message to the IP terminal.
  • the response message of the A query message includes: an IP address corresponding to the SIP server domain name of the CPE.
  • the method for implementing S22 may specifically be:
  • the CPE After determining that the IP terminal sends the DNS-SRV request, the CPE receives the response message of the DNS-SRV request returned by the DNS server, inserts the SIP server domain name of the CPE into the response message, and returns the response message to the IP terminal.
  • the method for implementing S22 may specifically be:
  • the CPE After determining that the IP terminal does not receive the response message of the DNS-SRV request returned by the DNS server within a set time, the CPE returns a response message of the DNS-SRV request to the IP terminal after the IP terminal sends the DNS-SRV request, and the response message is sent. Including: SIP server domain name of CPE.
  • a specific embodiment of the present invention provides an IP terminal.
  • the IP terminal as shown in FIG. 3, includes: a sending unit 31, configured to send a DNS-SRV request to a domain name system DNS server in a headquarters server;
  • the receiving unit 32 is configured to receive a response message of the DNS-SRV request returned by the client terminal device CPE, where the response message includes: a SIP server domain name of the CPE;
  • the sending unit 31 is further configured to initiate an address A query to the CPE, where the A query includes: a SIP Server domain name of the CPE;
  • the receiving unit 32 is configured to receive a response message of the A query that is returned by the CPE, where the response message includes: an IP address corresponding to a SIP Server domain name of the CPE;
  • a service unit 33 configured to initiate a service to a headquarters server
  • the switching unit 34 is configured to initiate a SIP call to the CPE when the headquarters server is faulty, where the SIP call includes: an IP address corresponding to the SIP Server domain name of the CPE, and the service is switched to the CPE by using the SIP call. To achieve local survival.
  • the IP terminal provided by the specific embodiment of the present invention obtains the SIP server domain name of the CPE through the response message of the DNS-SRV request, and then initiates an A query message to obtain the IP address corresponding to the SIP server domain name, so that when the IP terminal initiates the service and the headquarters server fails.
  • the IP terminal switches the service to the CPE for local survival.
  • a specific embodiment of the present invention further provides a CPE.
  • the CPE as shown in FIG. 4, includes: a detecting unit 41, configured to detect a DNS-SRV request sent by an IP terminal to a DNS server of a headquarters server;
  • the sending unit 42 is configured to: after the detecting unit 41 determines that the IP terminal sends the DNS-SRV request, return the response message of the DNS-SRV request to the IP terminal, where the response message includes: a SIP server domain name of the CPE;
  • the receiving unit 43 is configured to receive an A query message sent by the IP terminal, where the A query message includes: a SIP server domain name of the CPE;
  • the obtaining unit 44 is configured to obtain an IP address corresponding to the SIP server domain name of the CPE, and the sending unit 42 is further configured to return a response message of the A query message to the IP terminal, where the A query
  • the response message of the message includes: an IP address corresponding to the SIP Server domain name of the CPE.
  • the sending unit 42 is specifically configured to:
  • the CPE After determining that the IP terminal sends the DNS-SRV request, the CPE receives the response message of the DNS-SRV request returned by the DNS server, inserts the SIP Server domain name of the CPE into the response message, and returns the message to the IP terminal. Response message.
  • the sending unit 42 is specifically configured to:
  • the CPE After determining that the IP terminal does not receive the response message of the DNS-SRV request returned by the DNS server within a set time, the CPE returns a response message of the DNS-SRV request to the IP terminal after determining that the IP terminal sends the DNS-SRV request.
  • the response message includes: a SIP Server domain name of the CPE.
  • the IP terminal includes: a processor 501, a memory 502, a communication interface 503, and a bus 504.
  • the processor 501, the memory 502, and the communication interface 503 are connected to each other through a bus 504.
  • the bus 504 may be an Industry Standard Architecture (ISA) bus or a Peripheral Component Interconnect (PCI) bus.
  • the processor 501 may be a general-purpose processor, including a central processing unit (CPU), a network processor (in Chinese), and a network processor (hereinafter referred to as NP).
  • CPU central processing unit
  • NP network processor
  • the memory 502 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions for instructing the processor 501 to issue computer operating instructions.
  • the memory 502 may include a high-speed random access memory (English: random-access memory, RAM for short), and may also include a non-volatile memory such as at least one disk memory.
  • the communication interface 503 is configured to send a DNS-SRV request to the domain name system DNS server in the headquarters server, and receive a response message of the DNS-SRV request returned by the client terminal device CPE, where the response message includes: a SIP server domain name of the CPE; Initiating an address A query to the CPE, the A query includes: a SIP Server domain name of the CPE; receiving a response message of the A query returned by the CPE, where the response message includes: a SIP Server domain name of the CPE Corresponding IP address;
  • the processor 501 is configured to initiate a service to the headquarters server.
  • the control communication interface 503 initiates a SIP call to the CPE, where the SIP call includes: an IP address corresponding to the SIP server domain name of the CPE;
  • the device 501 switches traffic to the CPE through the SIP call to achieve local survival.
  • the IP address of the SIP server of the CPE and then the A query message is sent to obtain the IP address corresponding to the SIP server domain name.
  • the IP terminal initiates the service and the headquarters server is faulty, the IP terminal switches the service to the CPE to achieve local survival.
  • a specific embodiment of the present invention further provides a CPE.
  • the CPE as shown in FIG. 6, includes: a processor 601, a memory 602, a communication interface 603, and a bus 604.
  • the processor 601 detects a DNS-SRV request sent by the IP terminal to the DNS server of the headquarters server.
  • the communication interface 603 is configured to: after the processor 601 determines that the IP terminal sends the DNS-SRV request, return the DNS-SRV request to the IP terminal.
  • the response message includes: a SIP server domain name of the CPE; receiving an A query message sent by the IP terminal, where the A query message includes: a SIP server domain name of the CPE;
  • the processor 601 obtains an IP address corresponding to the SIP server domain name of the CPE.
  • the communication interface 603 is further configured to return a response message of the A query message to the IP terminal, where the A query
  • the response message of the message includes: an IP address corresponding to the SIP Server domain name of the CPE.
  • the communication interface 603 is specifically configured to:
  • the CPE After determining that the IP terminal sends the DNS-SRV request, the CPE receives the response message of the DNS-SRV request returned by the DNS server, inserts the SIP Server domain name of the CPE into the response message, and returns the message to the IP terminal. Response message.
  • the communication interface 603 is specifically configured to:
  • the CPE After determining that the IP terminal does not receive the response message of the DNS-SRV request returned by the DNS server within a set time, the CPE returns a response message of the DNS-SRV request to the IP terminal after determining that the IP terminal sends the DNS-SRV request.
  • the response message includes: a SIP Server domain name of the CPE.
  • a specific implementation of the present invention provides a local surviving support system.
  • the system includes: a client terminal device CPE 71, a headquarters server 72, and an IP terminal 73;
  • the CPE 71 is configured to detect a service resource record DNS-SRV request sent by the IP terminal 73 to the DNS server of the headquarters server 72;
  • the CPE 71 is configured to: after determining that the IP terminal 73 sends the DNS-SRV request, return a response message of the DNS-SRV request to the IP terminal 73, where the response message includes: a SIP server domain name of the CPE, and an IP terminal 73, configured to The CPE 71 sends an A query message, where the A query message includes: a SIP server domain name of the CPE;
  • the CPE 71 is configured to receive an A query message sent by the IP terminal 73.
  • the CPE 71 is configured to obtain an IP address corresponding to the SIP server domain name of the CPE, and return a response message of the A query message to the IP terminal 73.
  • the response message of the A query message includes: an IP address corresponding to the SIP server domain name of the CPE.
  • the foregoing CPE 71 is specifically configured to: After determining that the IP terminal sends the DNS-SRV request, the CPE receives the response message of the DNS-SRV request returned by the DNS server, inserts the SIP Server domain name of the CPE into the response message, and returns the message to the IP terminal. Response message.
  • the foregoing CPE 71 is specifically configured to:
  • the CPE After determining that the IP terminal does not receive the response message of the DNS-SRV request returned by the DNS server within a set time, the CPE returns a response message of the DNS-SRV request to the IP terminal after determining that the IP terminal sends the DNS-SRV request.
  • the response message includes: a SIP Server domain name of the CPE.

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Abstract

本发明提供了一种本地存活的增强方法及终端,所述方法包括:网际协议IP终端向总部服务器中的域名系统DNS服务器发送业务资源记录DNS-SRV请求;所述IP终端接收客户终端设备CPE返回的所述DNS-SRV请求的响应消息,所述响应消息包括:CPE的SIP Server域名;所述IP终端向所述CPE发起地址A查询,所述IP终端接收所述CPE返回的所述A查询的响应消息,所述IP终端在向总部服务器发起业务;当总部服务器故障时,IP终端向所述CPE发起SIP呼叫,所述SIP呼叫包括:所述CPE的SIP Server域名对应的IP地址,通过所述SIP呼叫将业务切换到所述CPE以实现本地存活。

Description

本地存活的增强方法及终端
本申请要求于 2012 年 12 月 28 日提交中国专利局、 申请号为 201210584234.6、发明名称为"本地存活的增强方法及终端"的中国专利申请的优 先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明属于通信领域, 尤其涉及一种本地存活的增强方法及终端。
背景技术
在总部 +分支的语音网络中, 在总部语音网络正常时, 总部控制其管理的终 端的呼叫, 终端可享受总部提供的业务 (比如会议、 录音等业务); 在总部语音网 络故障时, 分支能语音网络能够接管分支终端的呼叫, 此种方式称为本地存活。
在总部语音网络正常时,分支会话启动协议 (英文: session initiation protocol, 简称: SIP)终端注册到总部服务器, 若分支语音网络支持本地存活, 当总部语音 网络故障后,分支 SIP终端注册到分支语音网络的接入设备,分支 SIP终端注册 到分支语音网络的接入设备后, 分支 SIP终端可实现分支语音网络的内部通话, 并且通过分支语音网络的接入设备连接到公共交换电话网络 (英文: public switched telephone network, 简称: PSTN ) 网络。
网际协议(英文: Internet Protocol, 简称: IP )终端是通过本地配置或域名 解析获取到呼叫服务器地址, 然后通过 IP终端的配置管理界面部署呼叫服务器 地址, 在总部 +分支模式中, 通常通 IP终端过域名系统(英文: Domain Name System, 简称: DNS )服务器获取呼叫服务器地址, 但是此时的 IP终端无法通 过 DNS获取客户终端设备(英文: Customer Premise Equipment, 简称: CPE ) 地址, 所以 CPE无法实现本地存活。 发明内容
本发明的目的在于提供一种本地存活的增强方法, 旨在解决现有技术 CPE 无法实现本地存活的问题。
本发明是这样实现的, 一种本地存活的增强方法, 所述方法包括: 网际协议 IP终端向总部服务器中的域名系统 DNS服务器发送业务资源记录
DNS-SRV请求;
所述 IP终端接收客户终端设备 CPE返回的所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名;
所述 IP终端向所述 CPE发起地址 A查询, 所述 A查询包括: 所述 CPE的 SIP Server域名;
所述 IP终端接收所述 CPE返回的所述 A查询的响应消息, 所述响应消息 包括: 所述 CPE的 SIP Server域名对应的 IP地址;
所述 IP终端在向总部服务器发起业务;
当总部服务器故障时, IP终端向所述 CPE发起 SIP呼叫, 所述 SIP呼叫包 括: 所述 CPE的 SIP Server域名对应的 IP地址, 通过所述 SIP呼叫将业务切换 到所述 CPE以实现本地存活。
第二方面, 提供一种本地存活的支持系统, 所述系统包括: 客户终端设备 CPE、 总部服务器和 IP终端;
所述 CPE, 用于检测 IP终端向总部服务器的 DNS服务器发送的业务资源 记录 DNS-SRV请求;
所述 CPE, 用于在确定 IP终端发送 DNS-SRV请求后, 向 IP终端返回所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名; 所述 IP终端, 用于向所述 CPE发送 A查询消息; 所述 A查询消息包括: CPE的 SIP Server域名;
所述 CPE , 用于接收 IP终端发送的 A查询消息;
所述 CPE, 用于获取所述 CPE的 SIP Server域名对应的 IP地址, 向 IP终 端返回 A查询消息的响应消息, 所述 A查询消息的响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址。
可选的, 所述 CPE具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
可选的, , 所述 CPE具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。
第三方面, 提供一种网际协议 IP终端, 所述 IP终端包括:
发送单元, 用于向总部服务器中的域名系统 DNS服务器发送 DNS-SRV请 求;
接收单元, 用于接收客户终端设备 CPE返回的所述 DNS-SRV请求的响应 消息, 所述响应消息包括: CPE的 SIP Server域名;
所述发送单元, 还用于向所述 CPE发起地址 A查询, 所述 A查询包括: 所 述 CPE的 SIP Server域名;
所述接收单元, 用于接收所述 CPE返回的所述 A查询的响应消息, 所述响 应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址;
业务单元, 用于在向总部服务器发起业务;
切换单元, 用于当总部服务器故障时, 向所述 CPE发起 SIP呼叫, 所述 SIP 呼叫包括: 所述 CPE的 SIP Server域名对应的 IP地址, 通过所述 SIP呼叫将业 务切换到所述 CPE以实现本地存活。
第四方面, 提供一种客户终端设备 CPE , 所述 CPE包括:
检测单元, 用于检测 IP终端向总部服务器的 DNS服务器发送的 DNS-SRV 请求;
发送单元, 用于在所述检测单元确定 IP终端发送 DNS-SRV请求后, 向 IP 终端返回所述 DNS-SRV请求的响应消息,所述响应消息包括: CPE的 SIP Server 域名;
接收单元, 用于接收 IP终端发送的 A查询消息, 所述 A查询消息包括: CPE的 SIP Server域名; 所述发送单元,还用于向 IP终端返回 A查询消息的响应消息, 所述 A查询 消息的响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址。
可选的, 所述发送单元具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
可选的, 所述发送单元具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。
在本发明的技术方案具有 CPE支持本地存活的优点。
附图说明
图 1是本发明具体实施方式提供的一种本地存活的增强方法的流程图; 图 3是本发明具体实施方式提供的 IP终端结构图;
图 4是本发明具体实施方式提供的 CPE结构图;
图 5是本发明具体实施方式提供的 IP终端硬件结构图;
图 6是本发明具体实施方式提供的 CPE硬件结构图;
图 7是本发明具体实施方式提供的本地存活的支持系统的结构图。
具体实施例
为了使本发明的目的、 技术方案及有益效果更加清楚明白, 以下结合附图 及实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体实施 例仅仅用以解释本发明, 并不用于限定本发明。
本发明具体实施方式提供的一种本地存活的增强方法, 该方法由 IP终端完 成, 该方法如图 1所示, 包括:
511、 IP终端向总部服务器中的 DNS服务器发送 DNS-SRV请求;
512、 IP终端接收 CPE返回的该 DNS-SRV请求的响应消息 , 该响应消息包 括: CPE的 SIP Server域名;
513、 IP终端向 CPE发起地址(英文: address , 简称: A )查询消息, 所 述 A查询消息包括: CPE的 SIP Server域名; 514、接收所述 CPE返回的 A查询的响应消息,该 A查询的响应消息包括: CPE的 SIP Server域名对应的 IP地址
515、 IP终端向总部服务器发起业务, 当总部服务器故障时, IP终端向 CPE 发起 SIP呼叫 , SIP呼叫包括: CPE的 SIP Server域名对应的 IP地址, 通过 SIP呼叫将业务切换到所述 CPE以实现本体存活。
上述总部服务器故障的检测方法可以为多种, 例如, 通过心跳检测的方式 来获知总部服务器故障, 当然也可以通过探测消息来检测总部服务器是否故障, 业务资源记录 ( A DNS RR for specifying the location of services , DNS-SRV ) : 具体用于给出在某域中实现某种服务和协议的服务器地址列表, 其定义具体可以参见 RFC 2782。
本发明具体实施方式提供的方法通过 DNS-SRV请求的响应消息获取 CPE 的 SIP Server域名,然后发起 A查询消息获取该 SIP Server域名对应的 IP地址, 这样当 IP终端发起业务且总部服务器故障时, IP终端将业务切换到该 CPE以实 现本地存活。
上述 CPE的 SIP Server域名为配置的域名, 上述 SIP Server域名对应的 IP 地址可以为静态配置的, 也可以为动态获取的动态 IP地址, 其中动态 IP地址的 获取方式可以为:当 CPE 上电后, 向动态主机设置协议(英文: Dynamic Host Configuration Protocol, 简称: DHCP )服务器发送 DHCP请求消息, DHCP服 务器发送该 DHCP请求消息的 DHCP响应消息,该 DHCP响应消息内携带有 CPE 的 SIP Server域名对应的动态 IP地址。
本发明具体实施方式还提供一种本地存活的支持方法, 该方法如图 2所示, 由 CPE完成, 该方法如图 2所示, 包括:
521、 CPE检测 IP终端向总部服务器的 DNS服务器发送的 DNS-SRV请求;
522、 CPE在确定 IP终端发送 DNS-SRV请求后, 向 IP终端返回该请求的 响应消息, 该响应消息包括: CPE的 SIP Server域名;
S23、 CPE接收 IP终端发送的 A查询消息, 所述 A查询消息包括: CPE的
SIP Server域名;
S24、 CPE获取所述 CPE的 SIP Server域名对应的 IP地址, 向 IP终端返回 A查询消息的响应消息,所述 A查询消息的响应消息包括:所述 CPE的 SIP Server 域名对应的 IP地址。
实现 S22的方法具体可以为:
CPE在确定 IP终端发送 DNS-SRV请求后, 接收 DNS服务器返回的该 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到该响应消息后向该 IP终端返回该响应消息。
实现 S22的方法具体还可以为:
CPE在确定 IP终端发送 DNS-SRV请求后,在设定时间内未收到 DNS服务 器返回的该 DNS-SRV请求的响应消息时, 向 IP终端返回该 DNS-SRV请求的 响应消息, 该响应消息包括: CPE的 SIP Server域名。
本发明具体实施方式提供一种 IP终端, 所述 IP终端如图 3所示, 包括: 发送单元 31 , 用于向总部服务器中的域名系统 DNS服务器发送 DNS-SRV 请求;
接收单元 32 , 用于接收客户终端设备 CPE返回的所述 DNS-SRV请求的响 应消息, 所述响应消息包括: CPE的 SIP Server域名; 发送单元 31 , 还用于向所述 CPE发起地址 A查询, 所述 A查询包括: 所 述 CPE的 SIP Server域名;
接收单元 32 , 用于接收所述 CPE返回的所述 A查询的响应消息, 所述响应 消息包括: 所述 CPE的 SIP Server域名对应的 IP地址;
业务单元 33 , 用于在向总部服务器发起业务;
切换单元 34, 用于当总部服务器故障时, 向所述 CPE发起 SIP呼叫, 所述 SIP呼叫包括: 所述 CPE的 SIP Server域名对应的 IP地址, 通过所述 SIP呼叫 将业务切换到所述 CPE以实现本地存活。
本发明具体实施方式提供的 IP 终端通过 DNS-SRV请求的响应消息获取 CPE的 SIP Server域名, 然后发起 A查询消息获取该 SIP Server域名对应的 IP 地址, 这样当 IP 终端发起业务且总部服务器故障时, IP 终端将业务切换到该 CPE以实现本地存活。
本发明具体实施方式还提供一种 CPE, 该 CPE如图 4所示, 包括: 检测单元 41 ,用于检测 IP终端向总部服务器的 DNS服务器发送的 DNS-SRV 请求;
发送单元 42, 用于在检测单元 41确定 IP终端发送 DNS-SRV请求后, 向 IP终端返回所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名;
接收单元 43 , 用于接收 IP终端发送的 A查询消息, 所述 A查询消息包括: CPE的 SIP Server域名;
获取单元 44 , 用于获取所述 CPE的 SIP Server域名对应的 IP地址; 发送单元 42 , 还用于向 IP终端返回 A查询消息的响应消息, 所述 A查询 消息的响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址。
可选的, 发送单元 42具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
可选的, 发送单元 42具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。
本发明具体实施方式提供一种 IP终端, 所述 IP终端如图 5所示, 包括: 包 括: 处理器 501、 存储器 502、 通信接口 503和总线 504。
处理器 501、 存储器 502、 通信接口 503通过总线 504相互连接; 总线 504 可以是工业标准架构体系 (Industry Standard Architecture, ISA ) 总线或外围组 件互联 (英文: Peripheral Component Interconnect, 简称: PCI ) 总线等。
上述的处理器 501 可以是通用处理器, 包括中央处理器 (英文: central processing unit, 简称 CPU ) 、 网络处理器(英文: network processor, 简称 NP ) 等。
存储器 502 , 用于存放程序。 具体地, 程序可以包括程序代码, 所述程序代 码包括计算机操作指令, 该程序用于指示处理器 501 发出计算机操作指令。 存 储器 502可能包含高速随机存储器(英文: random-access memory, 简称: RAM ) 存储器, 也可能还包括非易失性存储器 ( non-volatile memory ) , 例如至少一个 磁盘存储器。 通信接口 503 ,用于向总部服务器中的域名系统 DNS服务器发送 DNS-SRV 请求; 接收客户终端设备 CPE返回的所述 DNS-SRV请求的响应消息, 所述响 应消息包括: CPE的 SIP Server域名; 向所述 CPE发起地址 A查询, 所述 A查 询包括: 所述 CPE的 SIP Server域名; 接收所述 CPE返回的所述 A查询的响应 消息, 所述响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址;
处理器 501 , 用于在向总部服务器发起业务; 当总部服务器故障时, 控制通 信接口 503向所述 CPE发起 SIP呼叫,所述 SIP呼叫包括:所述 CPE的 SIP Server 域名对应的 IP地址; 处理器 501通过所述 SIP呼叫将业务切换到所述 CPE以实 现本地存活。
本发明具体实施方式提供的 IP 终端通过 DNS-SRV请求的响应消息获取
CPE的 SIP Server域名, 然后发起 A查询消息获取该 SIP Server域名对应的 IP 地址, 这样当 IP 终端发起业务且总部服务器故障时, IP 终端将业务切换到该 CPE以实现本地存活。
本发明具体实施方式还提供一种 CPE, 该 CPE如图 6所示, 包括: 包括: 包括: 处理器 601、 存储器 602、 通信接口 603和总线 604。
处理器 601检测 IP终端向总部服务器的 DNS服务器发送的 DNS-SRV请求; 通信接口 603 , 用于在处理器 601确定 IP终端发送 DNS-SRV请求后, 向 IP终端返回所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名; 接收 IP终端发送的 A查询消息, 所述 A查询消息包括: CPE的 SIP Server域名;
处理器 601获取所述 CPE的 SIP Server域名对应的 IP地址;
通信接口 603 , 还用于向 IP终端返回 A查询消息的响应消息, 所述 A查询 消息的响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址。
可选的, 通信接口 603具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
可选的, 通信接口 603具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。
本发明具体实施方式提供一种本地存活的支持系统, 该系统如图 7 所示, 包括: 客户终端设备 CPE 71、 总部服务器 72和 IP终端 73;
CPE 71 , 用于检测 IP终端 73向总部服务器 72的 DNS服务器发送的业务 资源记录 DNS-SRV请求;
CPE71 , 用于在确定 IP终端 73发送 DNS-SRV请求后, 向 IP终端 73返回 所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名; IP终端 73 , 用于向 CPE 71发送 A查询消息; 所述 A查询消息包括: CPE 的 SIP Server域名;
CPE 71 , 用于接收 IP终端 73发送的 A查询消息;
CPE 71 , 用于获取 CPE的 SIP Server域名对应的 IP地址, 向 IP终端 73返 回 A查询消息的响应消息, 所述 A查询消息的响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址。
可选的, 上述 CPE 71具体用于: CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
可选的, 上述 CPE 71具体用于:
CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是 可以通过程序来指令相关的硬件来完成, 所述的程序可以存储于一计算机可读 取存储介质中, 所述的存储介质, 如 ROM/RAM、 磁盘、 光盘等。
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本发 明的精神和原则之内所作的任何修改、 等同替换和改进等, 均应包含在本发明 的保护范围之内。

Claims

权利要求书
1、 一种本地存活的增强方法, 其特征在于, 所述方法包括:
网际协议 IP终端向总部服务器中的域名系统 DNS服务器发送业务资源记录 DNS-SRV请求;
所述 IP终端接收客户终端设备 CPE返回的所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名;
所述 IP终端向所述 CPE发起地址 A查询, 所述 A查询包括: 所述 CPE的 SIP Server域名;
所述 IP终端接收所述 CPE返回的所述 A查询的响应消息, 所述响应消息 包括: 所述 CPE的 SIP Server域名对应的 IP地址;
所述 IP终端在向总部服务器发起业务;
当总部服务器故障时, IP终端向所述 CPE发起 SIP呼叫, 所述 SIP呼叫包 括: 所述 CPE的 SIP Server域名对应的 IP地址, 通过所述 SIP呼叫将业务切换 到所述 CPE以实现本地存活。
2、 一种本地存活的支持方法, 其特征在于, 所述方法包括:
客户终端设备 CPE检测 IP终端向总部服务器的 DNS服务器发送的业务资 源记录 DNS-SRV请求;
所述 CPE 在确定 IP 终端发送 DNS-SRV请求后, 向 IP 终端返回所述 DNS-SRV请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名;
所述 CPE接收 IP终端发送的 A查询消息, 所述 A查询消息包括: CPE的 SIP Server域名; 所述 CPE获取所述 CPE的 SIP Server域名对应的 IP地址, 向 IP终端返回 A查询消息的响应消息,所述 A查询消息的响应消息包括:所述 CPE的 SIP Server 域名对应的 IP地址。
3、 根据权利要求 2所述的方法, 其特征在于, 所述 CPE在确定 IP终端发 送 DNS-SRV请求后, 向 IP终端返回所述 DNS-SRV请求的响应消息, 所述响 应消息包括: CPE的 SIP Server域名具体包括:
CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
4、 根据权利要求 2所述的方法, 其特征在于, 所述 CPE在确定 IP终端发 送 DNS-SRV请求后, 向 IP终端返回所述 DNS-SRV请求的响应消息, 所述响 应消息包括: CPE的 SIP Server域名具体包括:
CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。
5、 一种网际协议 IP终端, 其特征在于, 所述 IP终端包括:
发送单元, 用于向总部服务器中的域名系统 DNS服务器发送 DNS-SRV请 求;
接收单元, 用于接收客户终端设备 CPE返回的所述 DNS-SRV请求的响应 消息, 所述响应消息包括: CPE的 SIP Server域名;
所述发送单元, 还用于向所述 CPE发起地址 A查询, 所述 A查询包括: 所 述 CPE的 SIP Server域名; 所述接收单元, 用于接收所述 CPE返回的所述 A查询的响应消息, 所述响 应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址;
业务单元, 用于在向总部服务器发起业务;
切换单元, 用于当总部服务器故障时, 向所述 CPE发起 SIP呼叫, 所述 SIP 呼叫包括: 所述 CPE的 SIP Server域名对应的 IP地址, 通过所述 SIP呼叫将业 务切换到所述 CPE以实现本地存活。
6、 一种客户终端设备 CPE, 其特征在于, 所述 CPE包括:
检测单元, 用于检测 IP终端向总部服务器的 DNS服务器发送的 DNS-SRV 请求;
发送单元, 用于在所述检测单元确定 IP终端发送 DNS-SRV请求后, 向 IP 终端返回所述 DNS-SRV请求的响应消息,所述响应消息包括: CPE的 SIP Server 域名;
接收单元, 用于接收 IP终端发送的 A查询消息, 所述 A查询消息包括: CPE的 SIP Server域名; 所述发送单元,还用于向 IP终端返回 A查询消息的响应消息, 所述 A查询 消息的响应消息包括: 所述 CPE的 SIP Server域名对应的 IP地址。
7、 根据权利要求 6所述的方法, 其特征在于, 所述发送单元具体用于: CPE在确定 IP终端发送 DNS-SRV请求后,接收所述 DNS服务器返回的所 述 DNS-SRV请求的响应消息,将 CPE的 SIP Server域名插入到所述响应消息后 向所述 IP终端返回所述响应消息。
8、 根据权利要求 6所述的方法, 其特征在于, 所述发送单元具体用于: CPE在确定 IP终端发送 DNS-SRV请求后, 在设定时间内未收到所述 DNS 服务器返回的所述 DNS-SRV请求的响应消息时,向 IP终端返回所述 DNS-SRV 请求的响应消息, 所述响应消息包括: CPE的 SIP Server域名。 。
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