CN105049245A - EPON element management system - Google Patents
EPON element management system Download PDFInfo
- Publication number
- CN105049245A CN105049245A CN201510386385.4A CN201510386385A CN105049245A CN 105049245 A CN105049245 A CN 105049245A CN 201510386385 A CN201510386385 A CN 201510386385A CN 105049245 A CN105049245 A CN 105049245A
- Authority
- CN
- China
- Prior art keywords
- management
- epon
- frame
- management system
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses an EPON element management system which comprises a management terminal which interchanges data with a plurality of clients through a wireless network, receives request instructions input by the clients, and outputs corresponding SNMP message according to the request instructions; and a proxy agent terminal which receives the SNMP message and parses the SNMP message. When the SNMP message is obtaining parameter frames, the proxy agent terminal obtains parameter data of a proxied device and feeds the parameter data back to the management terminal. When the SNMP message is setting parameter frames, the proxy agent terminal sending corresponding device parameters to the proxied device according to request frames.
Description
Technical field
The present invention relates to NE management technical field, particularly relate to the Element management system of a kind of EPON.
Background technology
Along with the extensive use of computer network, particularly in a government office, financial institution, enterprises and institutions and military field application Element management system highlight more and more important.Meanwhile, the quantity of the network equipment increases, type increases, expanded range, manufacturer and model complexity, for network management brings huge challenge.
Network management unit provides unified Operation and Maintenance function in specialty net field, lays particular emphasis on the NE management of region, network, sub-network inside, can end-to-end management service equipment and network.As, an EMS can be adopted to manage the IMS(IPMultimediaSubsystem of an operator concentratedly, IP Multimedia System) network and equipment, comprise: equipment of the core network, data communications equipment, NGN(NextGenerationNetwork, next generation network) equipment, business device, third party's information technoloy equipment.
But traditional Element management system can be subject to region restriction.
Summary of the invention
Main purpose of the present invention is: provide a kind of not by Element management system and the method for the EPON of region restriction.
To achieve these goals, the invention provides the Element management system of a kind of EPON, the Element management system of this EPON comprises:
Management end, carries out data interaction by wireless network and some clients, receives the request instruction of some described client inputs, and exports corresponding SNMP message according to described request instruction;
Agency by agreement end, receives described SNMP message and resolves this SNMP message, when described SNMP message for get parms frame time, obtain the supplemental characteristic of trustship equipment and this supplemental characteristic fed back to described management end; When described request frame is parameters frame, send corresponding device parameter according to described request frame to trustship equipment.
Preferably, described management end comprises:
Communication module, for carrying out data interaction with described client;
Performance management module, for receiving the supplemental characteristic of the trustship equipment that described agency by agreement end gathers, and is analyzed the supplemental characteristic received, to obtain the quality of service of network;
SNMP module, the request instruction for inputting according to described client generates corresponding SNMP message and exports described agency by agreement end to.
Preferably, described management end also comprises:
Safety management module, whether the account for authentication of users input is identical with password with the account of the keeper preset with password, if identical, then allows to enter Element management system, if not identical, then do not allow to enter Element management system;
Log management module, for recording the landing time of described keeper, operation and operand.
Preferably, described management end also comprises:
Configuration Manager, for collecting the configuration information of described trustship equipment, line link test setting of going forward side by side and alarming threshold are arranged.
Preferably, described management end also comprises the fault management module sending over special event for receiving described agency by agreement end, and described event of failure is reported to the police to described management end by described fault management module in real time.
Preferably, described agency by agreement end comprises:
SNMP communication module, for receiving described SNMP message, and judges that described SNMP message gets parms frame or parameters frame;
OAM protocol communication module, if described SNMP message is parameters frame, then sends corresponding device parameter according to described parameters frame to described trustship equipment; If described request frame is the frame that gets parms, then the frame that gets parms described in basis gathers the supplemental characteristic of described trustship equipment and this supplemental characteristic is fed back to described management end.
Preferably, described agency by agreement end also comprises:
Data management module, for storing the supplemental characteristic of described OAM protocol communication module acquires trustship equipment, and when described SNMP communication module receive get parms frame time, obtain corresponding supplemental characteristic from described data management module; When described SNMP communication module receives parameters frame, revise described data management module and identify accordingly, described OAM protocol communication module sends corresponding parameters according to the mark in described data management module to described trustship equipment.
Preferably, this special event also for monitoring the special event of described trustship equipment, and is stored in described data management module by described OAM protocol communication module.
The Element management system of EPON provided by the invention, multiple ONU that trustship equipment comprises multiple OLT and is connected with OLT.Several ONU are unified by the unified management of an agency by agreement end.And the data got and management end are carried out data interaction by agency by agreement end.Management end again by the data feedback that receives to client.Management end is communicated by wireless network with some clients.Therefore, keeper can carry out detection management in any one client to EPON network, thus breaches restriction geographically.In addition, invention achieves the integration of resource, not only save cost, and convenient management again.
Accompanying drawing explanation
Fig. 1 is the module diagram of Element management system first embodiment of EPON of the present invention;
Fig. 2 is the module diagram of Element management system second embodiment of EPON of the present invention;
Fig. 3 is the module diagram of the first embodiment of the management end of the Element management system of EPON of the present invention;
Fig. 4 is the module diagram of the second embodiment of the management end of the Element management system of EPON of the present invention;
Fig. 5 is the module diagram of the 3rd embodiment of the management end of the Element management system of EPON of the present invention;
Fig. 6 is the module diagram of the 4th embodiment of the management end of the Element management system of EPON of the present invention;
Fig. 7 is the module diagram of the first embodiment of the agency by agreement end of the Element management system of EPON of the present invention;
Fig. 8 is the module diagram of the second embodiment of the agency by agreement end of the Element management system of EPON of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides the Element management system of a kind of EPON.
It is the module diagram of Element management system first embodiment of EPON of the present invention referring to figs. 1 to 8, Fig. 1; Fig. 2 is the module diagram of Element management system second embodiment of EPON of the present invention; Fig. 3 is the module diagram of the first embodiment of the management end of the Element management system of EPON of the present invention; Fig. 4 is the module diagram of the second embodiment of the management end of the Element management system of EPON of the present invention; Fig. 5 is the module diagram of the 3rd embodiment of the management end of the Element management system of EPON of the present invention; Fig. 6 is the module diagram of the 4th embodiment of the management end of the Element management system of EPON of the present invention; Fig. 7 is the module diagram of the first embodiment of the agency by agreement end of the Element management system of EPON of the present invention; Fig. 8 is the module diagram of the second embodiment of the agency by agreement end of the Element management system of EPON of the present invention.The Element management system of a kind of EPON that the present embodiment provides comprises management end 1 and agency by agreement end 2.Management end 1 is connected with some client communications, and management end 1 is connected with agency by agreement end 2 by snmp protocol netting twine, and agency by agreement end 2 and trustship equipment 4 communicate to connect.It should be noted that multiple ONU that trustship equipment 4 comprises multiple OLT and is connected with OLT.It should be noted that multiple OLT can make backboard, and most multi-band 512 ONU of OLT.
Management end 1 is communicated with some clients 3 by wireless network.Keeper passes through the instruction of client 3 input request to management end 1.Management end 1 receives the request instruction of some clients 3 input, and exports corresponding SNMP message according to request instruction.When it should be noted that the data if desired knowing trustship equipment 4, then to get parms request instruction to client 3 input.When if desired optimum configurations being carried out to trustship equipment 4, then input parameters request instruction to client 3.Keeper according to actual needs, can send to client 3 get parms request instruction and parameters request instruction.Owing to being communicated with the management end 1 of Element management system by wireless network during some clients 3, therefore, Element management system overcomes restriction geographically.In the present embodiment, management end 1 specifically comprises communication module 11, performance management module 12 and SNMP module 13.Communication module in management end 1 11 and client 3 carry out data interaction, thus make management end 1 can break through the restriction of region and several clients 3 carry out data interaction.Performance management module 12 receives the data of trustship equipment 4 that agency by agreement end 2 gathers, and is analyzed the data received, thus plans further for network and provide foundation with adjustment, to ensure the quality of service of network.Particularly, performance management module 12 pairs of EPON network performances monitor, detect, gather correlated performance statistics (as: error rate of link, frame error rate, the totalframes that equipment receives, send and by mistake frame number etc.), utilize the means such as the loopback test in agency by agreement end 2, carry out analyzing, diagnose, test link state and quality.SNMP module 13 generates corresponding SNMP message according to the request instruction that client 3 inputs and exports agency by agreement end 2 to.
Further, in order to ensure the fail safe of the Element management system of EPON, management end 1 also comprises safety management module 14 and log management module 15.It should be noted that the Element management system of EPON is preset with account and the password of several keepers.Whether the account that safety management module 14 inputs for checking client 3 is identical with password with the account of the keeper preset with password.If identical, then allow to enter Element management system.If not identical, then do not allow to enter Element management system.Keeper can also be divided into multiple grade, the administration authority that the Administrator of different brackets is different.Advanced level user has authority at the highest level.Log management module 15, for the landing time of record manager, operation and operand.Particularly, log management is mainly backed up the record of data.Comprise the management of security log and fault log, security log can searching and managing person's account, landing time, log in after the operation carried out and operand thereof.Fault log preserves all fault messages of trustship equipment 4.
Further, management end 1 also comprises Configuration Manager 16, for collecting the configuration information of trustship equipment 4, carries out link test setting and alarming threshold setting.In the Element management system of EPON, from trustship equipment 4, collect configuration information set up network resource data storehouse, support fault management, performance management, network resource information required for safety management.In configuration management, Element management system carries out real-time detection to EPON network, the state of each trustship equipment 4 and access module, speed, the interface type of uplink downlink in display current network, be responsible for restarting trustship equipment 4, carry out the setting of link test setting and alarming threshold.
Further, management end 1 also comprises the fault management module 17 sending over special event for receiving agency by agreement end 2.Event of failure is reported to the police to client 3 by fault management module 17 in real time.In this EPON network management system, fault, exception are that agency by agreement sends special event notice management end 1.When producing special event, notice comprises one group of canonical parameter relevant to reporting event, as: event source, event cause, the order of severity, alarm time etc.Real-time is reported to the police to client 3 by fault management module 17 after analysis special event.
Agency by agreement end 2 carries out data cube computation by snmp protocol netting twine and management end 1.Agency by agreement end 2 can the SNMP message that sends of receiving management end 1, and agency by agreement end 2 can also feed data back to management end 1, then transfers to client 3 by management end 1 and show.When agency by agreement end 2 receives the SNMP message that management end 1 sends over, agency by agreement end 2 can be resolved this SNMP message, and judges whether this SNMP message is the frame that gets parms.If SNMP message for get parms frame time, 1, mandatory administration end obtains the supplemental characteristic of trustship equipment 4, and the supplemental characteristic got is fed back to management end 1, to be presented in client 3 by supplemental characteristic, thus facilitate keeper to monitor the ruuning situation of trustship equipment 4.It should be noted that agency by agreement end 2 can get the error rate, frame error rate, equipment reception, the totalframes sent of the link of trustship equipment 4 and miss frame number etc.Particularly, agency by agreement end 2 comprises SNMP communication module 21 and OAM protocol communication module 22.SNMP communication module 21 receives SNMP message, and judges that SNMP message gets parms frame or parameters frame.If claim frame is parameters frame, OAM protocol communication module 22, then send corresponding parameter according to parameters frame to trustship equipment 4.If SNMP message is the frame that gets parms, then according to the frame that gets parms gather trustship equipment 4 related data and by this data feedback to management end 1.
Further, in order to overcome temporal restriction, agency by agreement end 2 also comprises data management module 23.Data management module 23 stores the data that OAM protocol communication module 22 gathers trustship equipment 4.Management end 1 can obtain the supplemental characteristic of trustship equipment 4 at any time to agency by agreement end 2.When SNMP communication module 21 receive get parms frame time, obtain corresponding data from data management module 23.When SNMP communication module 21 receives parameters frame, Update Table administration module 23 identifies accordingly, and OAM protocol communication module 22, according to the mark in data management module 23, sends corresponding parameters to trustship equipment 4.
Further, for responding the special event of trustship equipment 4 in time, this special event also for monitoring the special event of trustship equipment 4, and is stored in data management module 23 by OAM protocol communication module 22.In management station, SNMP module 13 termly, automatically gathers the parameter that agency by agreement provides, receive the information reporting of the special event that it sends, and the data such as the state after the equipment of the time of origin of relevant information, generation, generation are recorded to the local data base of management end, to adapt to the requirement analyzed.Management station wants the inquiry of response management client 3, configuration, amendment request, and the graphic interface information transmitting the hommizations such as prompting, warning is to client 3.Collected the various information of whole EPON network in agency by agreement end 2 by OAM protocol communication module 22, and by this stored in its data management module 23, inquire about with end 1 to be managed or revise.OAM protocol communication module 22 is also responsible for the special event receiving trustship equipment 4, and in data management module 23, threshold value (as: link error rates, frame error rate etc.) is set up to some critical events, by the mutual SNMP information of SNMPAgent and SNMPManager.Trustship equipment 4 is accepted commission the order of agent side 2 obtaining information and parameters, reports immediately when special event occurs to agency by agreement end 2.
The Element management system of EPON provided by the invention, multiple ONU that trustship equipment 4 comprises multiple OLT and is connected with OLT.Several ONU are unified by the unified management of an agency by agreement end 2.And the data got and management end 1 are carried out data interaction by agency by agreement end 2.Management end 1 again by the data feedback that receives to client 3.Management end 1 is communicated by wireless network with some clients 3.Therefore, keeper can carry out detection management at any one client 3 pairs of EPON networks, thus breaches restriction geographically.In addition, invention achieves the integration of resource, not only save cost, and convenient management again.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. an Element management system of EPON, is characterized in that, comprising:
Management end, carries out data interaction by wireless network and some clients, receives the request instruction of some described client inputs, and exports corresponding SNMP message according to described request instruction;
Agency by agreement end, receives described SNMP message and resolves this SNMP message, when described SNMP message for get parms frame time, obtain the supplemental characteristic of trustship equipment and this supplemental characteristic fed back to described management end; When described request frame is parameters frame, send corresponding device parameter according to described request frame to trustship equipment.
2. the Element management system of EPON as claimed in claim 1, it is characterized in that, described management end comprises:
Communication module, for carrying out data interaction with described client;
Performance management module, for receiving the supplemental characteristic of the trustship equipment that described agency by agreement end gathers, and is analyzed the supplemental characteristic received, to obtain the quality of service of network;
SNMP module, the request instruction for inputting according to described client generates corresponding SNMP message and exports described agency by agreement end to.
3. the Element management system of EPON as claimed in claim 2, it is characterized in that, described management end also comprises:
Safety management module, whether the account for authentication of users input is identical with password with the account of the keeper preset with password, if identical, then allows to enter Element management system, if not identical, then do not allow to enter Element management system;
Log management module, for recording the landing time of described keeper, operation and operand.
4. the Element management system of EPON as claimed in claim 2 or claim 3, it is characterized in that, described management end also comprises:
Configuration Manager, for collecting the configuration information of described trustship equipment, line link test setting of going forward side by side and alarming threshold are arranged.
5. the Element management system of EPON as claimed in claim 2 or claim 3, it is characterized in that, described management end also comprises the fault management module sending over special event for receiving described agency by agreement end, and described event of failure is reported to the police to described management end by described fault management module in real time.
6. the Element management system of EPON as claimed in claim 1, it is characterized in that, described agency by agreement end comprises:
SNMP communication module, for receiving described SNMP message, and judges that described SNMP message gets parms frame or parameters frame;
OAM protocol communication module, if described SNMP message is parameters frame, then sends corresponding device parameter according to described parameters frame to described trustship equipment; If described request frame is the frame that gets parms, then the frame that gets parms described in basis gathers the supplemental characteristic of described trustship equipment and this supplemental characteristic is fed back to described management end.
7. the Element management system of EPON as claimed in claim 6, it is characterized in that, described agency by agreement end also comprises:
Data management module, for storing the supplemental characteristic of described OAM protocol communication module acquires trustship equipment, and when described SNMP communication module receive get parms frame time, obtain corresponding supplemental characteristic from described data management module; When described SNMP communication module receives parameters frame, revise described data management module and identify accordingly, described OAM protocol communication module sends corresponding parameters according to the mark in described data management module to described trustship equipment.
8. the Element management system of EPON as claimed in claim 7, it is characterized in that, this special event also for monitoring the special event of described trustship equipment, and is stored in described data management module by described OAM protocol communication module.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510386385.4A CN105049245B (en) | 2015-07-02 | 2015-07-02 | The Element management system of EPON |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510386385.4A CN105049245B (en) | 2015-07-02 | 2015-07-02 | The Element management system of EPON |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105049245A true CN105049245A (en) | 2015-11-11 |
CN105049245B CN105049245B (en) | 2018-12-25 |
Family
ID=54455467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510386385.4A Active CN105049245B (en) | 2015-07-02 | 2015-07-02 | The Element management system of EPON |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105049245B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106506072A (en) * | 2016-10-28 | 2017-03-15 | 瑞斯康达科技发展股份有限公司 | A kind of collecting method and device |
WO2017156675A1 (en) * | 2016-03-14 | 2017-09-21 | 富士通株式会社 | Operation administration maintenance system |
CN107509128A (en) * | 2017-08-16 | 2017-12-22 | 中国联合网络通信集团有限公司 | A kind of method and system of core network access |
WO2018000588A1 (en) * | 2016-06-28 | 2018-01-04 | 中兴通讯股份有限公司 | Network element management method, device and mobile terminal |
CN108737196A (en) * | 2018-06-15 | 2018-11-02 | 深圳市西迪特科技有限公司 | The method for managing PON equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101094226A (en) * | 2006-06-19 | 2007-12-26 | 华为技术有限公司 | Security framework of managing network, and information processing method |
CN101815008A (en) * | 2010-03-25 | 2010-08-25 | 浙江工业大学 | OLT (Optical Line Terminal) agent subsystem of GPON (Gigabit-Capable Passive Optical Network) management system |
CN101989918A (en) * | 2009-08-04 | 2011-03-23 | 中兴通讯股份有限公司 | Peer-to-peer network management system and method |
-
2015
- 2015-07-02 CN CN201510386385.4A patent/CN105049245B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101094226A (en) * | 2006-06-19 | 2007-12-26 | 华为技术有限公司 | Security framework of managing network, and information processing method |
CN101989918A (en) * | 2009-08-04 | 2011-03-23 | 中兴通讯股份有限公司 | Peer-to-peer network management system and method |
CN101815008A (en) * | 2010-03-25 | 2010-08-25 | 浙江工业大学 | OLT (Optical Line Terminal) agent subsystem of GPON (Gigabit-Capable Passive Optical Network) management system |
Non-Patent Citations (2)
Title |
---|
刘叶杰,等: "基于SNMP的GPON网管OLT端MIB的设计与实现", 《杭州电子科技大学学报》 * |
马福萍,等: "GPON网管系统主代理OLT模块的设计", 《光通信技术》 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017156675A1 (en) * | 2016-03-14 | 2017-09-21 | 富士通株式会社 | Operation administration maintenance system |
WO2018000588A1 (en) * | 2016-06-28 | 2018-01-04 | 中兴通讯股份有限公司 | Network element management method, device and mobile terminal |
CN107547225A (en) * | 2016-06-28 | 2018-01-05 | 中兴通讯股份有限公司 | network element management method, device and mobile terminal |
CN106506072A (en) * | 2016-10-28 | 2017-03-15 | 瑞斯康达科技发展股份有限公司 | A kind of collecting method and device |
CN106506072B (en) * | 2016-10-28 | 2019-06-07 | 瑞斯康达科技发展股份有限公司 | A kind of collecting method and device |
CN107509128A (en) * | 2017-08-16 | 2017-12-22 | 中国联合网络通信集团有限公司 | A kind of method and system of core network access |
CN107509128B (en) * | 2017-08-16 | 2020-04-07 | 中国联合网络通信集团有限公司 | Method and system for accessing core network |
CN108737196A (en) * | 2018-06-15 | 2018-11-02 | 深圳市西迪特科技有限公司 | The method for managing PON equipment |
CN108737196B (en) * | 2018-06-15 | 2021-04-06 | 无锡雷华网络技术有限公司 | Method for managing PON equipment |
Also Published As
Publication number | Publication date |
---|---|
CN105049245B (en) | 2018-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11770314B2 (en) | Methods and apparatus for capturing and/or using packets to facilitate fault detection | |
US8504688B2 (en) | System and method for aggregate monitoring of user-based groups of private computer networks | |
EP2291949B1 (en) | Method and system for network fault management | |
CN105049245A (en) | EPON element management system | |
EP1990950B1 (en) | A management method for passive optical network terminal and system thereof | |
WO2012155682A1 (en) | Alarm management method and device of terminal apparatus of passive optical network | |
CN104219091A (en) | System and method for network operation fault detection | |
JP2014225883A (en) | Method and device for network analysis | |
CN101854647A (en) | Method for remotely monitoring and managing mobile agent server (MAS) through short message interface | |
US20160006631A1 (en) | Method and apparatus for link check in passive optical network | |
US20130067078A1 (en) | System and method for providing a script-based collection for devices in a network environment | |
CN105629103A (en) | Online monitoring method based on transformer substation operation and maintenance network shutdown | |
US20130150008A1 (en) | Method and apparatus for signaling trace | |
CN109586975A (en) | The cognitive method and system of quality of service exception | |
CN103490915A (en) | Fault analysis method and fault analysis device | |
CN102480319A (en) | Method for maintaining and managing PON terminal | |
CN102547603B (en) | Method, system and equipment for alarm processing | |
WO2021249546A1 (en) | Network monitoring method, electronic device and storage medium | |
US20090285576A1 (en) | Method and apparatus for feedback/configuration of optical network terminal (ONT) anomalies to/from a central location | |
US20240113944A1 (en) | Determining an organizational level network topology | |
CN105592485A (en) | Method for collecting and processing messages in real time based on SNMP | |
CN117425163A (en) | Wireless network remote management system | |
CN105577412A (en) | Monitoring method, device and system of terminal equipment | |
US10162733B2 (en) | Debugging failure of a service validation test | |
CN108476149B (en) | Operation management maintenance system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190621 Address after: No. 16 Lexing Road, New District, Wuxi City, Jiangsu Province, 214028 Patentee after: Wuxi Neihua Network Technology Co., Ltd. Address before: 518000 West Building, 4 Blocks and 6 Floors, Zongguan Honghualing Industrial South District, 1213 Liuxian Avenue, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Xi Dite Science and Technology Ltd. of Shenzhen |
|
TR01 | Transfer of patent right |