CN101075900B - Network device and its time synchronization method - Google Patents
Network device and its time synchronization method Download PDFInfo
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- CN101075900B CN101075900B CN200610060752A CN200610060752A CN101075900B CN 101075900 B CN101075900 B CN 101075900B CN 200610060752 A CN200610060752 A CN 200610060752A CN 200610060752 A CN200610060752 A CN 200610060752A CN 101075900 B CN101075900 B CN 101075900B
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Abstract
一种时间同步方法，包括：主收发模块判断是否接收到本地交换机发送的指令；若主收发模块接收到本地交换机发送的指令，则将主计时模块中的时间信息发送给备用计时服务模块；备用计时服务模块根据该时间信息启动备用计时模块进行计时；备用计时模块计时逾时时，备用收发模块判断是否接收到管理系统发送的替换信息；若备用收发模块接收到替换信息，则备用收发模块向本地交换机发送该指令的确认信息。本发明还揭示出一种使用该时间同步方法的网络装置。本发明实施方式中的网络装置及其时间同步方法，可通过备用计时模块与主计时模块进行同步计时，以防止接口主系统出错时无法给本地交换机发送确认信息，由此可保证通信网络正常运作。
A time synchronization method, comprising: the main transceiver module judges whether to receive the instruction sent by the local exchange; if the main transceiver module receives the instruction sent by the local exchange, then sends the time information in the main timing module to the backup timing service module; The timing service module starts the backup timing module according to the time information for timing; when the timing of the backup timing module expired, the backup transceiver module judged whether to receive the replacement information sent by the management system; if the backup transceiver module received the replacement information, the backup transceiver module sent to the local The switch sends an acknowledgment message for the command. The invention also discloses a network device using the time synchronization method. The network device and its time synchronization method in the embodiment of the present invention can perform synchronous timing through the standby timing module and the main timing module, so as to prevent the main system of the interface from being unable to send confirmation information to the local exchange when an error occurs, thereby ensuring the normal operation of the communication network .
Description
Technical field
The present invention relates to a kind of network equipment and management method thereof, relate in particular to a kind of network equipment and method for synchronizing time thereof.
Background technology
U.S. Bellcore (Bellcore) proposes the notion of V5 interface in the later stage eighties, and works up the North America technical standard of enterprise that is called TR303 the beginning of the nineties.TR303 is the predecessor of V5 interface, it can provide 28 T1 (1544kbit/s) link at most, local switch (Local Exchange, LE) embedding operation path management Access Network (AccessNetwork, AN) equipment that can be provided by the TR303 technical standard.(European TelecommunicationStandards Institute is ETSI) in promulgation V5 technical standard on TR303 technical standard basis in 1993 in ETSI.Management with access network device of V5 interface comprises configuration management, fault management and performance management etc.
In public exchanging telephone network, user side links to each other with local switch by the Access Network device.The Access Network device comprises V5 interface main system, V5 interface backup system and management system.Under the situation that V5 interface main system is not made mistakes, local switch can pass through V5 interface management Access Network device.When sending instruction such as ring and polarity inversion to the interface main system when local switch, if the interface main system is made mistakes, management system is replaced the interface main system rear port standby system of makeing mistakes can't send confirmation to local switch according to the timing result of interface main system, be that interface backup system and interface main system can't be carried out time synchronized, thereby cause public exchanging telephone network communication abnormality to occur.
Summary of the invention
For solving the deficiency that above-mentioned prior art exists, a kind of network equipment need be provided, be used for solving public exchanging telephone network and can't carry out the communication abnormality that time synchronized caused because of network equipment.
In addition, also need provide a kind of method for synchronizing time, be used for solving public exchanging telephone network and can't carry out the communication abnormality that time synchronized caused because of network equipment.
A kind of network equipment is connected with local switch, and comprises interface main system, interface backup system, and management system.The interface main system comprises that main transceiver module is used to receive the instruction that local switch sends, and the temporal information in the interface main system is sent to interface backup system.Interface backup system comprises standby transceiver module, standby timing module and standby timing service module.Standby transceiver module is used to judge whether to receive the replacement information that management system sends, and the affirmation information that sends this instruction to local switch.The standby timing module is used to write down described standby transceiver module and receives that described temporal information sends the time of the affirmation information of instruction to described local switch to described standby transceiver module.The standby timing service module is used for starting the standby timing module according to this temporal information and carries out timing.The interface main system that management system is used for makeing mistakes replaces with interface backup system, and replacement information is sent to interface backup system.
A kind of method for synchronizing time, in the network equipment that is applied to be connected with user side and local switch, this network equipment comprises interface main system, interface backup system and management system, wherein, module when service module and analytic accounting when the interface main system also comprises main transceiver module, analytic accounting, interface backup system also comprises standby transceiver module, standby timing module and standby timing service module, this method for synchronizing time comprises: after main transceiver module received the instruction of local switch transmission, module was carried out timing when service module started analytic accounting during analytic accounting; Main transceiver module during with analytic accounting the temporal information in the module send to the standby timing service module; The standby timing service module starts the standby timing module according to this temporal information and carries out timing; During standby timing module timing overtime, standby transceiver module judges whether to receive the replacement information that management system sends; If standby transceiver module receives this replacement information, then standby transceiver module sends the affirmation information of this instruction to local switch.
Network equipment in the embodiment of the present invention and method for synchronizing time thereof, in the time of can be by standby timing module and standby timing service module and analytic accounting when service module and analytic accounting module carry out time synchronisation, can't send confirmation to local switch when preventing that the interface main system from makeing mistakes, can guarantee the communication network normal operation thus.
Description of drawings
Fig. 1 is the applied environment schematic diagram of network equipment in the embodiment of the present invention.
Fig. 2 is the module map of network equipment in the embodiment of the present invention.
Fig. 3 is the flow chart of method for synchronizing time in the embodiment of the present invention.
Embodiment
See also Fig. 1, be depicted as the applied environment schematic diagram of network equipment 20 in the embodiment of the present invention.Network equipment 20 is connected with user side 10 and local switch 30, and local switch 30 can pass through V5 interface management network equipment 20.In the present embodiment, user side 10 can be analog telephone, and network equipment 20 can be access network (Access Network, AN) equipment.
See also Fig. 2, be depicted as the module map of network equipment 20 in the embodiment of the present invention.Network equipment 20 comprises interface main system 22, interface backup system 24 and management system 26.
Module 224 when service module 222 and analytic accounting when interface main system 22 comprises main transceiver module 220, analytic accounting.
Main transceiver module 220 is used to receive the instruction that local switch 30 sends, and the temporal information in the interface main system 22 is sent to interface backup system 24.
Module 224 is used to write down main transceiver module 220 sends the affirmation information of these instructions to local switch 30 to main transceiver module 220 from the instruction that receives local switch 30 transmissions time during analytic accounting.In the present embodiment, main transceiver module 220 can not be greater than 5 seconds from the instruction that receives local switch 30 and send to the time interval that sends the affirmation information of these instructions to local switch 30.
Module 224 was carried out timing when service module 222 was used for starting analytic accounting when main transceiver module 220 receives the instruction of local switch 30 transmissions during analytic accounting.
Interface backup system 24 comprises standby transceiver module 240, standby timing module 242 and standby timing service module 244.
Standby transceiver module 240 is used to judge whether to receive the replacement information that management system 26 sends, and the affirmation information that sends this instruction to local switch 30.
Standby timing module 242 is used to be recorded in standby transceiver module 240 and receives that this temporal information sends the time of the affirmation information of this instruction to local switch 30 to standby transceiver module 240.
Standby timing service module 244 is used for starting standby timing module 242 according to this temporal information and carries out timing.
The interface main system 22 that management system 26 is used for makeing mistakes replaces with interface backup system 24, and replacement information is sent to interface backup system 24.
In the present embodiment, have only interface main system 22 in running order under the proper communication situation.When interface main system 22 was made mistakes, management system 26 was replaced interface main system 22 with interface backup system 24, and this moment, interface backup system 24 was just in running order.
Consult Fig. 3, be depicted as the flow chart of method for synchronizing time in the embodiment of the present invention.
In the present embodiment, management system 26 is detected the working condition of interface main system 22 constantly.When if interface main system 22 can not be worked because of software or hardware error occurring, management system 26 is replaced the interface main system 22 of makeing mistakes with interface backup system 24, and replacement information is sent to standby transceiver module 240.
At step S300, network equipment 20 is in holding state.
At step S302, main transceiver module 220 receives the instruction that local switch 30 sends.
In the present embodiment, the instruction of local switch 30 transmissions comprises ringing instruction and polarity inversion instruction.If have user and user side 10 to connect, local switch 30 can see through main transceiver module 220 and set up communicating to connect of calling subscriber and user side 10 to user side 10 transmission ringing instructions, and after communicating to connect foundation, send polarity inversions by main transceiver module 220 to user side 10 and instruct and begin to calculate air time between calling subscriber and the user side 10.
Enter step S304, module 224 was carried out timing when service module 222 started analytic accountings during analytic accounting, main simultaneously transceiver module 220 during with analytic accounting the temporal information in the module 224 send to standby timing service module 244.
Enter step S306, standby timing service module 244 starts standby timing module 242 according to this temporal information and carries out timing.
Enter step S308, during standby timing module 242 timing overtimes, standby transceiver module 240 judges whether to receive the replacement information that management system 26 sends.If standby transceiver module 240 is received the replacement information that management system 26 sends, then enter step S310, standby transceiver module 240 sends the affirmation information of this instruction to local switch 30.If standby transceiver module 240 is not received the replacement information that management system 26 sends, then enter step S312, main transceiver module 220 sends the affirmation information of this instruction to local switch 30.
Network equipment 20 and method for synchronizing time thereof in the embodiment of the present invention, can be by standby timing module 242 and standby timing service module 244 during with analytic accounting when service module 222 and analytic accounting module 224 carry out time synchronisation, send confirmations can't for when preventing that interface main system 22 from makeing mistakes local switch 30, guarantee the communication network normal operation thus.
Claims (9)
1. a network equipment is connected with local switch, comprises interface main system, interface backup system and management system, it is characterized in that:
Described interface main system comprises main transceiver module, is used to receive the instruction that described local switch sends, and the temporal information in the described interface main system is sent to described interface backup system;
Described interface backup system comprises:
Standby transceiver module is used to judge whether to receive the replacement information that described management system sends, and the affirmation information that sends described instruction to described local switch;
The standby timing module is used to write down described standby transceiver module and receives that described temporal information sends the time of the affirmation information of instruction to described local switch to described standby transceiver module; And
The standby timing service module is used for starting described standby timing module according to described temporal information and carries out timing;
The described interface main system that described management system is used for makeing mistakes replaces with described interface backup system, and replacement information is sent to described interface backup system.
2. network equipment as claimed in claim 1 is characterized in that, described interface main system and described interface backup system all meet the V5 agreement.
3. network equipment as claimed in claim 1 is characterized in that, the instruction that described local switch sends comprises ringing instruction and polarity inversion instruction.
4. network equipment as claimed in claim 1, it is characterized in that, module was carried out timing when service module was used for starting described analytic accounting when described main transceiver module receives the instruction that described local switch sends when module when service module and analytic accounting when described interface main system also comprises analytic accounting, described analytic accounting.
5. network equipment as claimed in claim 1, it is characterized in that, module when described interface main system also comprises analytic accounting is used to write down described main transceiver module sends the affirmation information of described instruction to described local switch to described main transceiver module from the instruction that receives described local switch transmission time.
6. method for synchronizing time, in the network equipment that is applied to be connected with user side and local switch, described network equipment comprises interface main system, interface backup system and management system, wherein, module when service module and analytic accounting when described interface main system also comprises main transceiver module, analytic accounting, described interface backup system also comprises standby transceiver module, standby timing module and standby timing service module, it is characterized in that, described method for synchronizing time comprises:
Described main transceiver module receives the instruction that described local switch sends;
Module was carried out timing when service module started described analytic accounting during described analytic accounting;
Described main transceiver module during with described analytic accounting the temporal information in the module send to described standby timing service module;
Described standby timing service module starts described standby timing module according to described temporal information and carries out timing;
During described standby timing module timing overtime, described standby transceiver module judges whether the replacement information of receiving that described management system sends; And
If described standby transceiver module receives described replacement information, then described standby transceiver module sends the affirmation information of described instruction to described local switch.
7. method for synchronizing time as claimed in claim 6 is characterized in that, described management system is replaced described interface backup system described interface main system and replacement information is sent to described interface backup system when described interface main system is made mistakes.
8. method for synchronizing time as claimed in claim 6 is characterized in that, module and described standby timing module are time synchronisation during described analytic accounting.
9. method for synchronizing time as claimed in claim 6, it is characterized in that, when also comprising described standby timing module timing overtime, if described standby transceiver module is not received the replacement information that described management system sends, then send the step of the affirmation information of described instruction to described local switch by described main transceiver module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610060752A CN101075900B (en) | 2006-05-19 | 2006-05-19 | Network device and its time synchronization method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610060752A CN101075900B (en) | 2006-05-19 | 2006-05-19 | Network device and its time synchronization method |
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| Publication Number | Publication Date |
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| CN101075900A CN101075900A (en) | 2007-11-21 |
| CN101075900B true CN101075900B (en) | 2010-05-26 |
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| CN200610060752A Expired - Fee Related CN101075900B (en) | 2006-05-19 | 2006-05-19 | Network device and its time synchronization method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001720B (en) * | 2012-11-12 | 2017-05-10 | 中兴通讯股份有限公司 | Time synchronization method and device |
| CN111899374A (en) * | 2019-05-05 | 2020-11-06 | 上海小川科技有限公司 | Remote vehicle control and information reading terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998042148A1 (en) * | 1997-03-18 | 1998-09-24 | Nokia Telecommunications Oy | Procedure for ensuring the operation of signalling channels in a v5 interface |
| WO1999048307A1 (en) * | 1998-03-13 | 1999-09-23 | Nokia Networks Oy | Method and system for ensuring a pstn protocol restart procedure as defined by the v5 standard |
| CN1459725A (en) * | 2002-05-17 | 2003-12-03 | 智邦科技股份有限公司 | Methods of recovering from agent module failures |
| CN1545268A (en) * | 2003-11-27 | 2004-11-10 | 中兴通讯股份有限公司 | A method and system for Ethernet interface node backup |
-
2006
- 2006-05-19 CN CN200610060752A patent/CN101075900B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998042148A1 (en) * | 1997-03-18 | 1998-09-24 | Nokia Telecommunications Oy | Procedure for ensuring the operation of signalling channels in a v5 interface |
| WO1999048307A1 (en) * | 1998-03-13 | 1999-09-23 | Nokia Networks Oy | Method and system for ensuring a pstn protocol restart procedure as defined by the v5 standard |
| CN1459725A (en) * | 2002-05-17 | 2003-12-03 | 智邦科技股份有限公司 | Methods of recovering from agent module failures |
| CN1545268A (en) * | 2003-11-27 | 2004-11-10 | 中兴通讯股份有限公司 | A method and system for Ethernet interface node backup |
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| CN101075900A (en) | 2007-11-21 |
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Granted publication date: 20100526 Termination date: 20110519 |