Chapter 1 Overview of Routine Maintenance 1-1 ................................................1.1 Basic Principles for Equipment Maintenance 1-1 .........................................1.2 Purposes of Routine Maintenance 1-2 .........................................................Chapter 2 Routine Maintenance Tasks 2-1 ..........................................................2.1 Daily Maintenance Tasks 2-1 .......................................................................2.1.1 Equipment Room Environment 2-1 ......................................................2.1.2 Power Supply System 2-2 ....................................................................2.1.3 Terminal System 2-2 ............................................................................2.1.4 Alarm System 2-3 .................................................................................2.1.5 Equipment Operation 2-4 .....................................................................2.1.6 Service Implementation 2-6 .................................................................2.2 Monthly Maintenance Tasks 2-7 ...................................................................2.2.1 Cabinets 2-8 .........................................................................................2.2.2 Terminal System 2-10 ............................................................................2.2.3 Service Implementation 2-12 .................................................................2.2.4 Spare Parts 2-12 ....................................................................................2.3 Yearly Maintenance Tasks 2-13 .....................................................................2.3.1 System Switchover 2-13 ........................................................................2.3.2 Data Verification 2-13 .............................................................................2.3.3 Cabinet Components 2-14 .....................................................................Chapter 3 Guide to Dangerous Operations 3-1 ...................................................3.1 Dangerous Operations on Hardware 3-1 ......................................................3.2 Dangerous Operations on Software 3-3 .......................................................3.3 Dangerous Operations on Commands 3-5 ...................................................3.3.1 Dangerous Operations on Equipment ManagementCommands 3-6 ..............................................................................................3.3.2 Dangerous Operations on Signaling Management Commands 3-7 .....3.3.3 Dangerous Operations on System Management Commands 3-9 .......Appendix A Grounding and Dusting Operation Guide A-1 ................................A.1 Maintaining Grounding System A-1 ..............................................................A.1.1 Checking Grounding System A-1 .........................................................A.1.2 Measuring Grounding Resistance A-2 .................................................A.2 Removing Dust from Equipment A-3 ............................................................A.2.1 Cleaning Air Filter Frame A-3 ...............................................................A.2.2 Cleaning Air Filter Gauze A-5 ..............................................................A.2.3 Cleaning Fan Frame A-5 ......................................................................A.2.4 Cleaning Air Deflector A-6 ....................................................................A.2.5 Cleaning Board A-7 ..............................................................................Appendix B Common Maintenance Commands B-1 ...........................................Appendix C Maintenance Record Table C-1 ........................................................C.1 Daily Maintenance Record C-1 .....................................................................C.2 Monthly Maintenance Record C-4 ................................................................C.3 Yearly Maintenance Record C-6 ..................................................................C.4 Fault Handling Record C-7 ...........................................................................C.5 Board Replacement Record C-8 ..................................................................C.6 Data Modification Record C-9 ......................................................................Appendix D Acronyms and Abbreviations D-1 ....................................................Index .................................................................................................................Huawei Technologies Proprietary HUAWEI U-SYS SG7000 Signaling Gateway Maintenance Manual Routine MaintenanceV200R001 Huawei Technologies Proprietary U-SYS SG7000 Signaling Gateway Maintenance Manual VolumeRoutine Maintenance Manual VersionT2-010349-20050530-C-2.00 Product VersionV200R001 BOM31033849 Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. Please feel free to contact our local office or company headquarters. Huawei Technologies Co., Ltd. Address: Administration Building, Huawei Technologies Co., Ltd., Bantian, Longgang District, Shenzhen, P. R. China Postal Code: 518129 Website: http://www.huawei.com Email: support@huawei.com Huawei Technologies Proprietary Copyright 2004 Huawei Technologies Co., Ltd. All Rights Reserved No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks , HUAWEI, C&C08, EAST8000, HONET,, ViewPoint, INtess, ETS, DMC, TELLIN,InfoLink,Netkey,Quidway,SYNLOCK,Radium,M900/M1800, TELESIGHT,Quidview,Musa,Airbridge,Tellwin,Inmedia,VRP,DOPRA, iTELLIN, HUAWEI OptiX, C&C08 iNET, NETENGINE, OptiX, iSite, U-SYS, iMUSE, OpenEye,Lansway,SmartAX,infoX,TopEngaretrademarksofHuawei Technologies Co., Ltd. All other trademarks mentioned in this manual are the property of their respective holders. Notice The information in this manual is subject to change without notice. Every effort has been made in the preparation of this manual to ensure accuracy of the contents, butallstatements,information,andrecommendationsinthismanualdonot constitute the warranty of any kind, express or implied. Huawei Technologies Proprietary About This Manual Release Notes This manual applies to U-SYS SG7000 Signaling Gateway V200R001. Organization Themanualdescribesthemaintenanceprinciples,routinemaintenancetasksand operations in SG7000 V200R001. There are three chapters and four appendixes in the manual. Chapter1OverviewofRoutineMaintenanceintroduces basic principles for equipmentmaintenance,mainobjectivesforroutinemaintenance,andbasic requirements on equipment room environment for operation of SG7000. Chapter2RoutineMaintenanceTasksintroducesdailymaintenancetasks, monthly maintenance tasks, and yearly maintenance tasks that the maintenance personnel need to perform. Chapter3GuidetoDangerousOperationselaboratesthedangerous operations of hardware, software and commands, and the potential impacts that might be bestowed on the operation of the equipment. AppendixAGroundingandDustingOperationGuidedescribeshowto maintain the grounding devices and remove the dust from the equipment.Appendix B Common Maintenance Commands lists the most commonly used maintenance commands.Appendix C Maintenance Record Table gives some samples for recording the maintenance operations.Appendix D Acronyms and Abbreviations lists the abbreviations used in this manual and the corresponding full expressions. Intended Audience The manual is intended for the following readers: engineering specialist operation & maintenance personnel Huawei Technologies Proprietary ConventionsThe manual uses the following conventions: I. General conventions ConventionDescription ArialNormal paragraphs are in Arial. BoldfaceHeadings are in Boldface.Courier NewTerminal Display is in Courier New. II. GUI conventions ConventionDescription < > Button names are inside angle brackets. For example, click the button. [ ] Window names, menu items, data table and field names are inside square brackets. For example, pop up the [New User] window. / Multi-level menus are separated by forward slashes. For example, [File/Create/Folder]. III. Mouse operationActionDescription Click Press the left button or right button quickly (left button by default). IV. Symbols Eye-catching symbols are also used in the manual to highlight the points worthy of special attention during the operation. They are defined as follows: Caution,Warning,Danger:Meansreaderbeextremelycarefulduringthe operation. Note,Comment,Tip,Knowhow,Thought:Meansacomplementary description. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayTable of Contents Huawei Technologies Proprietary i Table of Contents Chapter 1 Overview of Routine Maintenance............................................................................. 1-1 1.1 Basic Principles for Equipment Maintenance .................................................................... 1-1 1.2 Purposes of Routine Maintenance..................................................................................... 1-2 Chapter 2 Routine Maintenance Tasks ....................................................................................... 2-1 2.1 Daily Maintenance Tasks................................................................................................... 2-1 2.1.1 Equipment Room Environment ............................................................................... 2-1 2.1.2 Power Supply System............................................................................................. 2-2 2.1.3 Terminal System..................................................................................................... 2-2 2.1.4 Alarm System.......................................................................................................... 2-3 2.1.5 Equipment Operation .............................................................................................. 2-4 2.1.6 Service Implementation........................................................................................... 2-6 2.2 Monthly Maintenance Tasks.............................................................................................. 2-7 2.2.1 Cabinets .................................................................................................................. 2-8 2.2.2 Terminal System................................................................................................... 2-10 2.2.3 Service Implementation......................................................................................... 2-12 2.2.4 Spare Parts ........................................................................................................... 2-12 2.3 Yearly Maintenance Tasks .............................................................................................. 2-13 2.3.1 System Switchover................................................................................................ 2-13 2.3.2 Data Verification.................................................................................................... 2-13 2.3.3 Cabinet Components ............................................................................................ 2-14 Chapter 3 Guide to Dangerous Operations ................................................................................ 3-1 3.1 Dangerous Operations on Hardware................................................................................. 3-1 3.2 Dangerous Operations on Software .................................................................................. 3-3 3.3 Dangerous Operations on Commands .............................................................................. 3-5 3.3.1 Dangerous Operations on Equipment Management Commands........................... 3-6 3.3.2 Dangerous Operations on Signaling Management Commands ............................. 3-7 3.3.3 Dangerous Operations on System Management Commands ................................ 3-9 Appendix A Grounding and Dusting Operation Guide..............................................................A-1 A.1 Maintaining Grounding System......................................................................................... A-1 A.1.1 Checking Grounding System.................................................................................. A-1 A.1.2 Measuring Grounding Resistance .......................................................................... A-2 A.2 Removing Dust from Equipment ....................................................................................... A-3 A.2.1 Cleaning Air Filter Frame........................................................................................ A-3 A.2.2 Cleaning Air Filter Gauze:....................................................................................... A-5 A.2.3 Cleaning Fan Frame: .............................................................................................. A-5 A.2.4 Cleaning Air Deflector............................................................................................. A-6 A.2.5 Cleaning Board....................................................................................................... A-7 Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayTable of Contents Huawei Technologies Proprietary ii Appendix B Common Maintenance Commands ........................................................................B-1 Appendix C Maintenance Record Table......................................................................................C-1 C.1 Daily Maintenance Record................................................................................................C-1 C.2 Monthly Maintenance Record ...........................................................................................C-4 C.3 Yearly Maintenance Record..............................................................................................C-6 C.4 Fault Handling Record ......................................................................................................C-7 C.5 Board Replacement Record..............................................................................................C-8 C.6 Data Modification Record..................................................................................................C-9 Appendix D Acronyms and Abbreviations .................................................................................D-1 Index ................................................................................................................................................ i-1 Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 1Overview of Routine Maintenance Huawei Technologies Proprietary 1-1 Chapter 1Overview of Routine Maintenance Routine maintenance is a preventive measure taken periodically during system running to discover and eliminate hidden defects and troubles in time, and ensure the normal running of the system.1.1Basic Principles for Equipment Maintenance Tocompletelyexerttheequipmentsperformanceandfunction,avoidaccidents, ensure the long-term safe and stable operation of devices, and lower the maintenance cost,youneedtotakethefollowingbasicprinciplesintoconsiderationbefore maintaining the equipment: Payfullattentiontotheimportanceofroutinemaintenance.Ensurethatthe maintenanceworkiscarriedoutcorrectlyandorderlybyestablishingstrict regulations for equipment management and maintenance. The equipment room environment must meet the requirements stipulated in the relatednationalorindustrialstandards.Theequipmentroomiscleanand equipped with dust-proof, moisture-proof, and rodent-resistant devices. Maintenancepersonnelmustbetrainedbeforeperformingmaintenancework. Theymustlearnnecessaryequipmentmaintenanceknowledge,operation regulations, and industry security regulations, and grasp basic operation skills and emergency handling techniques on equipment. Maintenancepersonnelmustcarryoutroutinecheckandtestandrecordthe relevant results every day according to the suggestions described in this manual. Ifanydifficultyismetduringmaintenance,maintenancepersonnelmustrecord theoriginalinformationindetail,andthencontactHuaweiCustomerService Center or Regional Office of Huawei in time. If any emergency occurs, maintenance personnel must handle it according to the relatedproceduresasdescribedintheMaintenanceManualEmergency Maintenance, and immediately contact Huawei Customer Service Center (refer to thesecondpageinCoverofthismanualforthecontactmethod)orRegional Office of Huawei. Thesystemadministratormustkeepthemanagement-levelpasswordsfrom others and modify them periodically. Passwords are classified into different levels andallocatedbasedontheoperationauthoritiesofthemaintenancepersonnel andworkstations(WKs)forthepurposesofensuringsecureoperationofthe terminal system. Recordallmajoroperationssuchasboardswitchover,systemresetting,and software loading, and carefully confirm whether the operations are feasible before Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 1Overview of Routine Maintenance Huawei Technologies Proprietary 1-2 carrying them out. Maintenance personnel must perform the operations after the corresponding backup, emergency, and security measures are made.Maintenancepersonnelareprohibitedfrominstallingorrunningnon-standard software on such critical computers as BAM. The non-standard software includes firewall software, anti-virus software, games software, and pirated software. Except the software delivered by Huawei with the equipment, the other software cannot be used to access or modify the database directly; otherwise, unexpected result will occur. Modify office data under authorization and control. Maintenance personnel must back up the office data before modifying it, and record the modified content. Keepsufficientsparepartsin storageforthefuture replacement offaultyparts, especially primary boards. 1.2Purposes of Routine Maintenance Dependingontheperiod,routinemaintenancecanbedividedintotwotypes:daily maintenance and periodic maintenance. I. Daily Maintenance Dailymaintenancereferstothesimplemaintenanceoperationsimplementedbythe commonmaintenancepersonneleveryday,suchascheckingequipmentroom environment, power supply system, terminal system, alarm system, and device running. Daily maintenance serves the following purposes: Torecognizealarmsgeneratedbytheequipmentortheexistingdefectsofthe equipmentintimeandtakeappropriatemeasuresaccordingly,thuskeeping stable operation of the equipment and lowering rate of failure. Torecognizeabnormalphenomenonoflinkstatusesorconnectionstatuses during service running in time and take proper measures to recover the system, thus ensuring the normal running of services. To grasp the operation state of both equipment and network in real time and find outtheoperationtendencyofthem,thusimprovingthehandlingefficiencyof maintenance personnel on emergency accidents. II. Periodic Maintenance Periodic maintenance refers to the complicated maintenance operations implemented by the trained maintenance personnel periodically, such as checking cables, measuring grounding resistance, cleaning equipment, and so on. Periodic maintenance serves the following purposes: To keep the equipment in good state and ensure the safe and stable operation of it Through periodic check, backup, test, and cleaning, to find out the defects of the equipmentintimeduringoperationsuchasnaturalaging,functionoutofwork, Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 1Overview of Routine Maintenance Huawei Technologies Proprietary 1-3 anddeteriorationofperformance,andthentotakeappropriatemeasures accordingly Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-1 Chapter 2Routine Maintenance Tasks 2.1Daily Maintenance Tasks You need to perform daily maintenance tasks whose targets include equipment room environment,powersupplysystem,terminalsystem,alarmsystem,equipment operation, and service implementation. Note: Necessarytoolsshouldbepreparedintheequipmentroom,suchasstraight screwdrivers,crossoverscrewdrivers,pliers,spanners,nippersofvariousmodels, electric iron, multimeter, ESD-preventive wrist strap, and ESD-preventive brush. 2.1.1Equipment Room Environment Table 2-1 Daily maintenance tasks of equipment room environment ItemMaintenance guideSpecifications Temperature Observe the indication of the thermometer in the equipment room. In normal conditions, the temperature in the equipment room is in range of 15C to 30C. Otherwise, it is abnormal. Fire prevention Check power distribution cabinet, N68-22 cabinet, frames, and cabling trough.There is no hidden danger for fire in these places, and various firefighting devices are prepared. Humidity Observe the indication of the hygrometer in the equipment room. In normal conditions, the humidity in the equipment room is between 40% and 65%. Otherwise, it is abnormal. Dust proof condition Check the surface of floor and workbench. Check both surface and inside of equipment. All these places are dust free. If one of them is not dust free, the dust proof condition is bad. Theft proof condition Check the doors, windows, and theftproof iron net. There is no damage of them. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-2 2.1.2Power Supply System Table 2-2 Daily maintenance tasks on power supply system ItemMaintenance guideSpecifications Power supply for cabinet Check the RUN indicator of the power distribution frame of each N68-22 cabinet. The RUN indicator (green) on the panel of the power distribution frame of each cabinet blinks once per second. And this indicates that the input power and internal circuits of the power distribution frame are normal. Power supply for LAN Switch Check the POWER indicators of LAN Switch 0 and LAN Switch 1. The POWER indicators (green) on the panel of LAN Switch 0 and LAN Switch 1 are steady on, which indicates the power supply to LAN Switch is normal. Power supply for server Check the power switch indicators of the BAM. If an indicator is on in green, the power supply to the corresponding server is normal. If an indicator is on in orange, the corresponding server is in standby state. Turn on the KVM (combining LCD, mouse and keyboard) and observe the status of the server. The status is normal. Power supply for hard disk array cabinet Check the power indicator of the hard disk array cabinet. The power indicator of the hard disk array cabinet is constantly green. Caution: The hard disk array cabinet is available only in dual-system mode. 2.1.3Terminal System Table 2-3 Daily maintenance tasks on terminal system ItemMaintenance guideSpecifications Hardware operation of BAM Select Start -> Programs -> Administrative tools -> Event Viewer on the Windows 2000 Server desktop, and then browse system logs in the Event Viewer window. In normal cases, there is no alarm on the BAM about the CPU, hard disk, or network adapter. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-3 ItemMaintenance guideSpecifications Software operation of BAM Right-click the BAM manager icon in the status area on the Windows 2000 Server desktop and query the operation state of various service processes of BAM. In normal cases, all service processes of BAM are in Started state instead of Stopped or Exceptional state. Communication state of BAM Select Start -> Setting -> Network and Dial-up Connections on the Windows 2000 Server desktop, and check the connection state of each network adapter in the pop-up window.If a red X symbol appears in an icon, the connection of the corresponding network adapter is broken. BAM Gateway Tool Check whether the BAM Gateway Tool runs normally on the BAM. In normal cases, the BAM Gateway Tool starts successfully, and the established connection between it and the alarm box functions well. 2.1.4Alarm System Table 2-4 Daily maintenance tasks on alarm system ItemMaintenance guide Specifications Power distribution frame Check the ALARM indicator and alarm buzzer of the power distribution frame in each N68-22 cabinet. The ALARM indicator (red) on the panel of the power distribution frame is off and the alarm buzzer sends out no alarm. Alarm information on alarm console Start the alarm browser on the alarm console and check various alarm items. Start the alarm query on the alarm console and query alarm information of a period according to alarm type and alarm level. There are no critical alarms in the system currently. There are no alarms about the power distribution frame or fan frame in the system currently. There is no critical alarm about MTP link or SIGTRAN link.Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-4 ItemMaintenance guide Specifications ALUI Check the indicators on the ALUI in each frame. The RUN indicator is on in green, which indicates the ALUI communicates normally with the HSYS. The two UPWR indicators are on in green, which indicates the UPWR board is normal.There are other indicators (00-15) on the panel of the ALUI. If one indicator of them is on in green, the back board in the corresponding slot works normally. If an indicator is off, the back board is not inserted in the corresponding slot. If an indicator is on in red, the back board in the corresponding slot is abnormal.Alarm box Check the indicators on the alarm box and the alarm buzzer. The alarm sound level indicators are off, and the alarm buzzer sends out no alarm. The serial port communication indicator (green) is on, which indicates that the alarm box communicates well with the WS. 2.1.5Equipment Operation Table 2-5 Daily maintenance tasks on equipment operation ItemMaintenance guideSpecifications Communication between foreground and background On the navigation tree on the left of the operation & maintenance client, select System -> Query board software version. The version and creation date of the corresponding board are displayed in the result. Otherwise, the communication between foreground and background is abnormal. Running of power distribution frame Execute the command DSP POWER to query the state of the power distribution frame. If normal is displayed in the window, the power distribution frame functions well. Operation of fan frames On the navigation tree of the operation & maintenance client, select System navigator -> Device Management on the left to check the FAN indicators in each rack. The FAN indicators in each rack are on in green, which indicates that the fan frames function well. If a FAN indicator is on in red, the corresponding fan frame runs abnormally (due to fault). In this case, check this fan frame on site immediately. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-5 ItemMaintenance guideSpecifications Operation of boards Method one: Graphical interface maintenance On the navigation tree of the operation & maintenance client, select System navigator -> Device Management on the left to display the state of the boards. Right-click a board to check the detailed running state of it. Double-click the bar above the display panel to display the box of upper sub-board, lower sub-board, and back board.Method two: command-mode maintenanceCheck the board running state through the commands DSP FRM and DSP BRD.For method one, the device panel displays the actual definition name of the boards. The normal boards are green. The normal active boards are dark green. The normal standby boards are sky blue. The abnormal boards are red. The abnormal active boards are dark red. The abnormal standby boards are purple.For method two, check the state of boards through the commands. The active boards are active and normal, and the standby boards are standby and normal. When the boards are faulty, the state is faulty or abnormal. Common boards are normal. If the data of the slot is not configured, uninstalled is shown. The returned running status of the boards is normal when using the command to check the boards. CPU usage Method one: Graphical interface maintenance On the navigation tree on the left of the operation & maintenance client, select System -> CPU usage trace. Method two: command-mode maintenanceUse the command ACT CPUR to start the tracing, and STP CPUR to end the tracing. In normal cases, the CPU and memory usage is displayed on the system performance tracing window. In normal cases, the CPU usage is under 30%.Data consistency between the foreground and background Use the command ACT CNSCHK to check the data consistency between the foreground and background. Query the database on the SQL Server. Add missed data and correct nonstandard data. Test the data consistency afterwards.The result is consistent. Query some databases such as device configuration/slot description table, and subscriber interface/port attribute configuration table. The result is consistent with the expectation.CKII clock system Use the MML commands DSP CKIILOCK, DSP CKIIRS, and DSP CKII to query the CKII clock system.The status of the CKII clock is displayed as tracing. The reference source is normal.Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-6 ItemMaintenance guideSpecifications State of FE port Use the MML command DSP BRD to query the status of the FE ports. Most of these FE ports belong to the SBPI. The status of all FE ports is displayed as normal. The MAC addresses of all ports are do not conflict.State of E1 port Use the MML command DSP BRD to query the status of the E1 ports. The status of all E1 ports is displayed as normal. Note: Toimproveefficiency,itissuggestedtocompileascriptfilecontainingalltheMML commandsneededfordailymaintenance.Inthisway,youcanexecuteallMML commands in batch by running this script file. 2.1.6Service Implementation Table 2-6 Daily maintenance tasks on service implementation ItemOperation guideSpecifications Link load when busy Create the report of link load when busy according to the load report creation method. Unidirectional load of single link is no more than 0.4 ERL. Add links or adjust the load if the value is more than 0.2 ERL.MTP link status Run the MML command DSP MULN7LNK. The object in the query result is available without any fault or inconsistency. MTP link set status Run the MML command DSP MULN7LKS. The object in the query result is available without any fault or inconsistency. MTP route status Run the MML command DSP MULN7RT. The object in the query result is available without any fault, transmission prohibition or inconsistency. MTP DSP status Run the MML command DSP MULN7DSP. The object in the query result is available without any fault, unreachable DSP or inconsistency. SCCP status Run the MML command DSP MULSCCP. The DSP in the query result is available without any inconsistency or abnormality. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-7 ItemOperation guideSpecifications SCCP subsystem status Run the MML command DSP MULSSN. The SSN in the query result is available without any inconsistency or in the test status. M3UA association status Run the MML command DSP MULM3ASSO. The object in the query result is activated without any inconsistency. M3UA association set status Run the MML command DSP MULM3ASSOS. The object in the query result is activated without any inconsistency. M3UA route status Run the MML command DSP MULM3RT. The object in the query result is available without any fault, transmission prohibition or inconsistency. M3UA application server status Run the MML command DSP MULM3AS. The object in the query result is available without any inconsistency. SCTP association status Run the MML command DSP SCTPASSOC2. The object in the query result is activated. The number of input and output streams of SCTP association is consistent. Link status of trunk interface board Run the MML command DSP TRUNKLNK. The link status of trunk interface boards is normal. 2.2Monthly Maintenance Tasks Maintenance personnel need to perform the following monthly maintenance tasks on cabinets, terminal system, service implementation, and spare parts. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-8 2.2.1Cabinets Table 2-7 Monthly maintenance tasks on cabinets ItemMaintenance guideSpecifications Power supply system Check whether the power input and output terminal blocks of the power distribution frame in each cabinet are loosely contacted, damaged, or eroded, and whether overcurrent or overtemperature occurs in them.Check whether the power input terminal blocks, power connectors and sockets of various components in each cabinet are loosely contacted, damaged, or eroded, and whether overcurrent or overtemperature occurs in them.Use a multimeter to measure the input and output voltage of the power distribution frame. All the connecting points are firm and reliable, and no erosion is found. No equipment is deformed, and the contacting positions of power switches are not heat for long. Normally, the voltage is 48 V, and the allowed variation range is from 57 V to 40 V. FansCheck every fan. Every fan runs well without any abnormal sound. For example, the noise generated when the vane touches the container. Cables Check whether the power cables, grounding cables, and signal cables in the cabinet are damaged, aged, eroded, or burned by electrical arc. All cables are in good condition.Grounding system Check whether the connecting terminals and captive screws of all grounding cables in the cabinet are connected firmly and no erosion occurs to them. Measure the grounding resistance in the equipment room with the earth resistance tester. Refer to the related contents in Appendix A of this manual, Grounding and Dusting Operation Guide, for the measurement method. All the connecting points are firm and reliable, and no erosion is found. The grounding resistance is no more than 10 ohm. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-9 ItemMaintenance guideSpecifications Protection system Check whether no foreign object is attached on top of a cabinet or fall into the cabinet. Check whether the rodent-proof nets at the exits of signal cables on top or bottom of each cabinet are wrapped and bundled well and not damaged. There is no foreign object inside a cabinet or attached on top of it.All rodent-proof nets are bundled well and no damage is found. Dust-proof system Wipe the surface of the cabinet with clean and dry cloth made of cotton yarn. Clean the area around the air inlets at the bottom of the cabinet with a vacuum cleaner. Remove the air filter frame at the bottom of the cabinet. Wash it with water. After airing it, install it back. Refer to Appendix A Grounding and Dusting Operation Guide for the detailed operations. Remove the air filter gauze inside the front door of the cabinet. Wash it with water. After airing it, install it back. Refer to Appendix A Grounding and Dusting Operation Guide for the detailed operations. There is no dust on the surface of the cabinet and around the air inlets at the bottom of the cabinet. The air filter frame and gauze are clean. Caution: If the combined grounding resistance of the cabinet is over one ohm, the carrier must reconstruct the grounding system. Otherwise, the running of the system will be greatly affected. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-10 2.2.2Terminal System Table 2-8 Monthly maintenance tasks on terminal system ItemMaintenance guideSpecifications Operator authority and password The system administrator should audit all the operator accounts, operator authorities, and workstation authorities defined by the terminal system (BAM) once a month, and modify the system administrator password periodically.Log on to the maintenance console as the system administrator. Select Maintenance console -> authority management. Select a subscriber and modify the password or authority of selected subscriber.The operator accounts, operator authorities, and workstation authorities are set in accordance with maintenance regulations of the carrier. The password of the system administrator of the BAM is modified once every month. The length of the password is no less than seven digits (including letters and numbers). There is no illegal subscriber or terminal.For the operations on modifying the information for auto-login to Windows 2000 Server, refer to the product installation manual. System time Run the MML command DSP EXTM. The system time is displayed in the returned result.The system time is consistent with the local standard time. Running status of the BAM Check the log file of the NT system and SQL server.Observe the response time of BAM operation. There is no unrecoverable alarm. The response time of a BAM operation is no more than five seconds. There is no record of dangerous operation in the system log.Status of the hard disk array Check the statuses of the hard disk array and logical drive in the array manager. Note that this operation is only needed in the BAM dual-system mode. The statuses of the hard disk array and logical drive are normal; there is no statuses like Critical or Defunction. Command log information Use the command LST LOG to see whether log is exported. The log can be queried. Communication status (WS)Check the communication status between the BAM and the WS. Use the Ping command to check the communication status between the BAM and the WS. Normal. Writable shared directories on the BAM.If there are writable shared directories on the BAM, change them to read-only shared or not shared. There is no writable shared directory. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-11 ItemMaintenance guideSpecifications Programs on the BAM Query where there are illegal programs on the BAM. There is no illegal program. Whether WWW server or E-mail server is installed without permissionIf yes, uninstall or remove it. A WWW server or An E-mail server is not installed. BAM database backup Back up the BAM database files to external storing medias such as magnetic optical (MO) CD through the network.In the BAM single-system mode, the data to be backed up is stored in the directory E:\MSSQL\DATA. In the BAM dual-system mode, the data to be backed up is stored in the directory F:\MSSQL\DATALOG.(Select the storing directory of the database files according to the actual installation.) All BAM database files under the designated directory are backed up. Select the storing directory of the database files according to the actual installation. BAM hard disk space Check the free space of the BAM hard disk periodically. Back up BAM database files through the network. Then remove some backed up outdated BAM database files.Normally, the free space of each partition in the BAM hard disk is over 50% of the total capacity of that partition. Caution Data backup aims to prevent the data loss in case that the BAM hard disk is faulty. To ensure the security, use different media (such as BAM hard disk, WS hard disk, and rewritable CD) to save more than two copies of backup files. Donotperformqueryoperationsduringthebackup.Thesystemautomatically backs up the database at 4:30 everyday. If immediate backup is expected, execute the corresponding operation manually. The data can be used for restoration if data restoration is selected during the installation. Manual operation to use the data for restoration is also available. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-12 2.2.3Service Implementation Table 2-9 Monthly maintenance tasks on service implementation ItemMaintenance guideSpecifications Service measurement result Run the MML command DSP TRFPERMDATA to check the service measurement result. Enter the corresponding number of the measurement item; select report type and time type according to the requirement..In normal cases, there is no missing data.Dumping service measurement data Use the MML commands DMP TRFPERMRST and DMP TRFSEMIRST to dump the service measurement data. Enter the corresponding number of the measurement item; select report type and time type according to the requirement. The data can be dumped. Removing useless activated measurement task Use the command LST TRFACT to check the result of activated service measurement. Use the command DEL TRFACT to remove the useless tasks. There is no useless activated measurement task in the system. 2.2.4Spare Parts Table 2-10 Monthly maintenance tasks on spare parts ItemMaintenance guideSpecifications Amount of spare parts Check the type and amount of spare parts to see whether they can meet the requirement of equipment maintenance. According to the hardware configuration of equipment, each board has at least one spare board.There are at least one spare fan frame and two spare SCSI hard disks. All spare parts are well kept without any damage, crack or corrosion. Damaged or replaced parts are repaired in time.Storage of spare parts Check the environment conditions in the spare parts warehouse periodically, such as fire protection, damp-proof, dust-proof, antimagnetic, ventilation, and shockproof conditions All conditions conform to the requirements on storage environment presented in the technical manual of this product. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-13 2.3Yearly Maintenance Tasks 2.3.1System Switchover Table 2-11 Yearly maintenance tasks on system switchover ItemMaintenance guideSpecifications Restart Shut down the BAM. Check whether the system can be restarted.Normal. Switching over major boards.Switch over the active HSYS, SBPI and CKII to standby ones on the maintenance console. Select the board number and module number according to the prompt. The active board is successfully reset. The original standby board switches over to an active board, and the original active board switches over to a standby board. The system runs normally after the switchover. Caution: The active and standby switchover must be implemented when the traffic is low (such as after 0:00 midnight). Back up and dump the data before the switchover. Make sure that the network management terminal system and its hardware run normally before the switchover. The loading cables are connected normally. The data backup is normal. Frequentswitchoverisstrictlyforbidden.Theminimumintervalbetweentwo switchovers is 30 minutes. 2.3.2Data Verification Table 2-12 Yearly maintenance tasks on data verification ItemMaintenance guideSpecifications Data verification Verify data on the maintenance terminal. Check whether the data are configured according to the standard. Correct or add missing data. Perform corresponding call test.Refer to related data and Operation Manual. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 2Routine Maintenance Tasks Huawei Technologies Proprietary 2-14 Caution: Strictly and carefully check whether the data are configured according to the standard. Correctthedatawhenthetrafficislow(suchasafter0:00midnight).Performthe dialing test after data correction to ensure quality. 2.3.3Cabinet Components Table 2-13 Yearly maintenance tasks on cabinet components ItemMaintenance guideSpecifications Cleaning of fan frame Wipe the dust from fan blades and circuit boards in the backup fan frame with clean cloth made of cotton yarn, ESD-preventive soft brush, and vacuum cleaner. Replace a fan frame in the rack with the backup one. Be sure to complete the replacement within five minutes. Wipe the dust from the replaced fan frame in the same way as described in the first step. After being cleaned, the replaced fan frame serves as a backup one. Replace the other fan frames in the rack and then clean them one by one in the same manner. All fan frames are dust free. Cleaning of air deflector Remove the air deflector from the rack, and then wipe the dust from it with clean cloth made of cotton yarn, ESD-preventive soft brush, and vacuum cleaner. Install the cleaned air deflector back into the rack. Clean the other air deflectors in the rack in the same manner. All air deflectors are dust free. Cleaning of boards It is recommended to clean the boards once every two years. For the detailed operations on cleaning boards, refer to the related contents in Appendix A Grounding and Dusting Operation Guide. All boards are dust free. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-1 Chapter 3Guide to Dangerous Operations 3.1Dangerous Operations on Hardware Table 3-1 Dangerous operations on hardware Operation on Maintenance guidance Possible consequence of maloperation In the same frame, it is strictly forbidden to pull out two or more UPWRs at the same time.When a frame is fully configured with service boards, if two or more UPWRs are pulled out, the other working UPWRs will be overloaded and even burnt.It is strictly forbidden to pull out the active board online. In case that the standby board works normally and the active board is pulled out online, although the system will implement changeover automatically, the newest data on the active board cannot be fully backed up onto the standby board automatically. Because the data synchronization between the active board and standby board takes some time. In this case, statistics error or data loss of the system might occur. When the standby board is abnormal, pulling out the active board online will interrupt the service process of related module and block the traffic partially or globally. It is strictly forbidden to press the Reset button on the panel of the board unless necessary.After pressing the Reset button on the panel of the board, the board will be forced to execute hardware reset, which can only be executed by the expert when severe faults occurs to the system. . If you press the "Reset" button by mistake, you will face the same consequence as "pulling out the active board online". Boards It is strictly forbidden to press the red locker of the lower ejector lever on the front panel of the board unless necessary. After the locker on an active board is pressed, the lever will trigger a small switch on the board to make the board be offline. The influence is the same as pulling out the active board online.Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-2 Operation on Maintenance guidance Possible consequence of maloperation It is strictly forbidden to insert or pull out the HSCU before powering off the HSYS corresponding to the HSCU. Such maloperation might damage the board. The correct way is to first power off the HSYS, and then pull out the HSCU. To power off the HSYS, press the red locker on the lower ejector lever of the HSYS, and then press the lower ejector lever.The HSCU in slot 9 corresponds to the HSYS in slot 6. The HSCU in slot 7 corresponds to the HSYS in slot 8. It is strictly forbidden to insert or pull out the board without wearing the antistatic wrist strap The static electricity on the human body is harmful to the electronic components of the board. The board is easily harmed by the static electricity if you insert or pull out the board without wearing the antistatic wrist strap. The static hazard can damage the board or cause unstable running of the board. Boards It is strictly forbidden to connect the serial port cable to the debug serial port for debugging. Only the engineers from Huawei Technologies Co., Ltd. can use the debug serial port of the board. It is dangerous for you to use the debug serial port because it might lower the board efficiency or reset the board. It is strictly forbidden to plug and unplug the Ethernet cable inside the cabinet unless necessary. The Ethernet cable connections inside the cabinet are mainly used to implement the communications between the frames and between the host and the BAM. Plugging and unplugging the Ethernet cables unnecessarily will cause interruption of the frame service and communication between the foreground and the background. Cables It is strictly forbidden to plug and unplug the monitoring cable of the power distribution box inside the cabinet unless necessary. If the monitoring cable is plugged and unplugged unnecessarily, the monitoring signal of the power distribution frame will not be reported to the background. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-3 Operation on Maintenance guidance Possible consequence of maloperation It is strictly forbidden to handle the power switches in the power distribution frame of the cabinet unless necessary. It is strictly forbidden to handle the power switches on the BAM server unless necessary. It is strictly forbidden to handle the power switches on the hard disk array cabinet unless necessary. The hard disk array cabinet is available only in the BAM dual-system mode. Power It is strictly forbidden to handle the power switches on 0#LAN Switch and 1#LAN Switch of the integrated configuration cabinet unless necessary. You can handle various power switches according to the operation instruction only when upgrading, expansion, replacing the components or major fault occurs. If you turn off the wrong switch, you will break down the devices and force them out of service. 3.2Dangerous Operations on Software Table 3-2 Dangerous operations on software Operation on Maintenance guidance Possible consequence of maloperation Files in the hard disk of the BAM It is strictly forbidden to modify the file directory structure or file name in the hard disk of the BAM. It will render the BAM or even system breakdown. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-4 Operation on Maintenance guidance Possible consequence of maloperation It is strictly forbidden to modify the configuration files (with the extension name as .ini) in the hard disk of the BAM. It is strictly forbidden to stop the BAM Service process in the Windows service process. The BAM Service process is used to monitor the running of the BAM Manager in real time. When the "BAM Manager is abnormal, the BAM Service will restart the BAM automatically to restore the "BAM Manager. If you stop the BAM Service process, when the BAM Manager runs abnormally, you must reset the BAM manually for recovery. This increases the workload of maintenance and can cause magnification of the BAM failure easily. Windows 2000 server It is strictly forbidden to stop the SGSmirror process in the Windows service process. The SGSmirror service process enables the data backup server to synchronously back up the files under the specified directory of the BAM hard disk.If the SGSmirror service process in the BAM is stopped, the data backup server will not be able to synchronously back up the files under the specified directory of the BAM hard disk. Microsoft SQL Server 2000 It is strictly forbidden to modify the password of the system administrator of the SQL Server 2000. Otherwise, you have to reinstall the BAM server. The BAM is abnormal, and the data fails to be saved. It is strictly forbidden to switch over the cluster resource groups unless necessary. During the cluster switchover, which lasts for 25 minutes, the connections will be interrupted and the system services will be affected.Cluster manager It is strictly forbidden to get the cluster resources offline. If the cluster resources are offline, the BAM cluster system cannot work normally. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-5 Operation on Maintenance guidance Possible consequence of maloperation It is strictly forbidden to stop the BAM Manager program. The BAM Manager program is an important component of the BAM server software. Closing the BAM Manager program will interrupt the communication between the foreground and the background, which is equivalent to BAM breakdown. BAM Manager It is strictly forbidden to stop any service process in the BAM Manager unless necessary. The BAM Manager contains several service processes such as Warn, DataMan, Maintain, MML, and Exchange. These service processes are used to implement different software functions. The states of these processes are Started under normal circumstances. If you stop a service process (the state of which changes to "Stopped"), the functions of this service process will be disabled, which will cause BAM failure. BAM Manager It is strictly forbidden to stop the real-time monitoring program in the BAM Manager. There is abutton on the toolbar of the BAM Manager program window. It is the real-time monitoring program button in the BAM Manager. When it is started normally, it will be concave.This monitoring program is used to monitor the running of various service processes in the BAM Manager in real time. If a service process exits abnormally, the system will restart it through the monitoring program to ensure normal running of the BAM Manager.If you stop the monitoring program accidentally by clicking the corresponding button to make it protuberant, when a service process in the BAM Manager exits abnormally, you must restart the BAM manually. This increases the maintenance workload and will cause more serious problems of the BAM. 3.3Dangerous Operations on Commands Caution: Only the trained maintenance engineers are allowed to execute the dangerous MML commands. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-6 3.3.1Dangerous Operations on Equipment Management Commands Table 3-3 Dangerous Operations on equipment management commands Operation on Command name Command function Possible consequence of maloperation BoardRST BRD Resetting board Be cautious when using this command. Do not use this command when the standby board of the reset board is faulty, offline or in the backup process. Otherwise, it will interrupt the link on the board.SWP HSYSSwapping the HSYSs Do not use this command when the standby board is faulty, offline or in the backup process. Otherwise, the whole service frame will be faulty. SWP SBPI Swapping the SBPIs Do not use this command when the standby board does not function normally. Otherwise, the broadband link will be interrupted. PWR BRD Powering on/off the board Powering off the interface board, SBPU or SPBI will interrupt the link on the board.SET EXTM Setting the current time of the host Modifying the current time of the host will affect the execution of measurement tasks. You might not get the correct measurement result. Set the current time of the host during the deployment or when you are not running a measurement task. SET SFTSWT Setting soft DIP switch Setting the soft DIP switch directly affects the loading process after board resetting. The loading might be wrong or fail if the soft DIP switch is set wrongly.Board SET L2BOOT Setting loading mode of secondary BOOTROM. If the secondary BOOTROM is set wrongly, error will occur during its loading. RST TRUNKPORT Resetting the port of the trunk interface board It will interrupt the link. Only use this command when the related port does not belong to any link that is being used. Trunk interface board SET TRUNKPORTLOOP Setting the port loop of the trunk interface board Maloperation will interrupt the link. The command is only for debugging operation. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-7 Operation on Command name Command function Possible consequence of maloperation SWP CKII Swapping the CKII board Do not swap the CKII when the standby board does not functional well. Otherwise, the equipment clock will not be synchronous. CKII SET CKII Setting work mode of the CKII board The work mode of the CKII affects the correct obtaining of the clock signal. If the work mode is set wrongly, the equipment clock will not be synchronous. RMV PATCH Removing patch The patch is usually integrated into other components. Some patches are important to the stable running of the system. If you remove a patch by mistake, it will affect a specific function of the system, and even harm the stable running of the system. Patch DEA PATCH Deactivating patch Same as above DEA DXCLNK Disconnecting The DXC cannot be reused to configure links after being disconnected. DXC SET SDLOOP Setting signaling link loop Maloperation will interrupt the link. The command is only for debugging operation. 3.3.2Dangerous Operations on Signaling Management Commands Table 3-4 Dangerous Operations on signaling management commands Operation on Command name Command function Possible consequence of maloperation DEA N7LNK Deactivating MTP link Maloperation will cause the link unavailable. Therefore, the corresponding service cannot be configured. INH N7LNK Inhibiting MTP link Maloperation will cause the link unavailable. Therefore, the corresponding service cannot be configured. DEA N7LKS Deactivating MTP link set If all links in a link set are deactivated, the network at a signaling point (SP) might be isolated. MTP OFL N7RT Setting MTP router offlineAfter the router is set offline, the router itself is unavailable although the link set is still available. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-8 Operation on Command name Command function Possible consequence of maloperation TST N7LNKLink test Testing the link will cause interruption of data transmission and services on the link. Testing the link is only for debugging operation. SCCP OFL SCCPDPC Setting SCCP offline. If the selected SCCP SP is set offline, the SCCP will end all services to the SP. SCCP OFL SCCPSSN Setting SCCP subsystem offline If the selected subsystem is set offline, the SCCP will end all services to the subsystem. M2PAREL M2ASS Releasing M2PA association Releasing the M2PA association will interrupt the association.REL M3ASSO Releasing M2PA association Releasing the M3UA association will interrupt the association.LCK M3ASSO Locking M3UA association If the M3UA association is locked, the M3UA association status cannot shift upward. For example, the state cannot shift from deactivated to activated. Be cautious when using this command. M3UA DEA M3ASSO Deactivating M3UA association Deactivating the M3UA association will interrupt the association. ACT MTPTRAC Activating MTP message trace Running the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. ACT SCCPTRAC Activating SCCP message trace Running the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. Message trace ACT TCAPSTRACActivating TCAP message trace Running the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-9 Operation on Command name Command function Possible consequence of maloperation ACT SCCPUTRACActivating SCCP user message trace Running the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. ACT SCTPTRAC Activating SCTP message trace Running the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. ACT M3TRAC Activating M3UA message trace Running the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. Message trace ACT RBTTRAC Activating message trace of individualized ring back toneRunning the command will affect the normal link data. Run the command when the message traffic is low. Too much message trace will block the system. Be cautious when using this command. 3.3.3Dangerous Operations on System Management Commands Table 3-5 Dangerous Operations on system management commands Operation on Command name Command function Possible consequence of maloperation RST DBTBLRestoring BAM data table Use this command to restore the data from the foreground to the background, which overwrites the BAM configuration. Use this command after you back up the present BAM data.ConsistencyRST TBL Notifying foreground to recover Use this command to recover the device data of the HSYS. Use this command to modify the configuration data on the board. Be cautious when using this command because it will interrupt the service. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayChapter 3Guide to Dangerous Operations Huawei Technologies Proprietary 3-10 Operation on Command name Command function Possible consequence of maloperation RST TMPTBL Copying the STP file from the TEMP directory to the DB database Be cautious when using this command because it will overwrite the BAM configuration.DatabaseSET OPMODE Setting online mode Executing this command will affect the execution of the configuration command and modify the online modes of all terminals. Only use the command during deployment. Be cautious when using the command. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-1 Appendix AGrounding and Dusting Operation Guide A.1Maintaining Grounding System Good grounding is one of the important measures to ensure the stable operation of the SG7000. It can protect maintenance personnel against electric shock and protect equipmentagainstESDinterference,electromagneticinterference,andlightning strike. Therefore, be sure to check the grounding system of the SG7000 at regular intervals (once a month is suggested). A.1.1Checking Grounding System I. Introduction to Grounding System The SG7000 adopts joint grounding, that is, working ground (GND), protection ground (PGND),andbackhaulground(BGND)shareonegroundingbody,thegrounding cablesofallcabinetsareconnectedfirmlytoformanequipotentialsystem. Depending on the installation or connecting positions, the grounding cables (in olivine normally) of the SG7000 are classified as shown in Table A-1. Table A-1 List of grounding cables of the SG7000 Installation or connecting position Description Between a cabinet and the grounding system The grounding cable of a cabinet connects the grounding terminal of the power distribution frame to the grounding copper busbar of the DC power distribution cabinet. Between two cabinets The grounding cables between two cabinets connect the grounding copper busbar of cabinet A to that of cabinet B. The grounding cable of the power distribution frame connects the power distribution frame to the grounding copper busbar. The grounding cable of the service frame connects a service frame to the grounding copper busbar. The grounding cable of KVM/LCD connects KVM/LCD to the grounding copper busbar. Between components in a cabinet and the grounding copper busbar of the cabinet The grounding cable of LAN Switch connects the LAN Switch to the grounding copper busbar. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-2 Installation or connecting position Description The grounding cable of the server connects a server to the grounding copper busbar. Between components in a cabinet and the grounding copper busbar of the cabinet The grounding cables of the cabinet connect the door, top cover, and bottom of a cabinet to the grounding copper busbar. Outside a cabinet The grounding cables of peripheral equipment connect the alarm box, or other equipment to the grounding system. II. Checking Grounding System 1)Check whether the grounding cables in a cabinet are damaged, aged, eroded, or burned by electrical arc. 2)Check whether the connecting terminals and captive screws of all grounding cables in the cabinet are connected firmly and no erosion occurs to them. 3)Use a multimeter to test whether all components in a cabinet are well grounded. Adjust the multimeter to the ohm range, connect one probe to a fixed grounding point in the equipment room (lengthen the probe cable if it is not long enough), and then use the other probe to measure the grounding points in the cabinet one by one. In view of the measurement precision of the multimeter, the resistance measured at each grounding point should be about one ohm. If the resistance measured at a grounding point is more than one ohm apparently, check the grounding cable, grounding terminal, and captive screw of this grounding point immediately, and then take appropriate measures accordingly. 4)Use an earth resistance tester to measure the grounding resistance of the grounding network in the equipment room. The grounding resistance should not be more than one ohm. Refer to A.1.2 for the detailed measurement method. III. Definitions of PGND, BGND, and GND PGND: the protection ground for cabinets and metal cases of various devices in a cabinet. BGND:thebackhaulgroundforDCpowersupplyofcabinets.Generally,the positive pole of 48 VDC power is grounded in the power distribution cabinet. GND: the working ground for circuits in various devices in a cabinet. It includes the digital ground and the analog ground of boards and backplane. A.1.2Measuring Grounding Resistance I. Measurement Method Itisrecommendedtousetheearthresistancetestertomeasurethegrounding resistance of the grounding network in the equipment room. Place the voltage pole Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-3 and current pole of the earth resistance tester in a manner as shown in Figure A-1 during measurement. Dd2d1Voltage pole Current poleGrounding networkMeasurement point Figure A-1 Layout of poles of earth resistance testerThe current pole is distanced from the edge of the grounding network with d1, which is four to five times of the maximum diagonal length (D) of the grounding network. The voltage pole is distanced from the edge of the grounding network with d2, whichis50%to60%ofthedistanced1betweenthecurrentpoleandthe grounding network.When measuring the resistance, move the voltage pole three times along the line between the current pole and the grounding network. The distance moved each time is 5% of d1. If the resistance values measured for three times are relatively close, take the average value of these three values as the grounding resistance of the grounding network.If d1 cannot be four to five times of D, set d1 to 2D and d2 to D in areas with relatively even earth resistance rate, and set d1 to 3D and d2 to 1.7D in areas with uneven earth resistance rate. II. Cautions Place the current pole and voltage pole vertical to the line or underground metal pipe. Do not measure the grounding resistance immediately after rain. A.2Removing Dust from Equipment A.2.1Cleaning Air Filter Frame TheairfilterframeislocatedatthebottomofanN68-22cabinet,responsiblefor filtering the wind entering the frame at the bottom of the cabinet for heat dissipation purposes. During the operation of the equipment, the dust in the air will be attached ontheairfilterframe.Theaccumulateddustwilldeterioratethewindpenetration Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-4 capabilitythroughtheairfilterframe,thusaffectingheatdissipationefficiencyand equipment stability. To ensure long-term stability of the equipment, be sure to clean the air filter frame of each cabinet periodically (once a month is recommended). Proceed as follows: I. Removing an Air Filter Frame out of a Cabinet 1)Open the front door of an N68-22 cabinet.2)Unscrew the two screws fixing the air filter frame at the bottom of the front side posts of the cabinet with a crossover screwdriver. 3)Hold the panel of the air filter frame with both hands. 4)Uplift the air filter frame slightly to make its panel higher than the screws fastening the grounding cables at the bottom of the cabinet. 5)Pull the air filter frame slowly out of the cabinet. Caution: Before taking out the air filter frame, open the cabinet door to an angle of 120, so the dust will not fall into the cabinet. II. Washing the Air Filter Frame 1)Wash the air filter frame with water. 2)Dry it with clean cloth.3)Finally, air it in a ventilating place. Caution: Do not insert the wet air filter frame into the cabinet; otherwise, the equipment will be damaged due to short circuit after water is absorbed into the cabinet. III. Installing the Air Filter Frame back into the Cabinet 1)Push the cleaned air filter frame aslant and downward along the guide rails into the cabinet. Do not push it forcedly. 2)After positioning the air filter frame, use a crossover screwdriver to screw the two screws used for fixing the air filter frame into the side posts of the cabinet. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-5 A.2.2Cleaning Air Filter Gauze The air filter gauze is located at the inner side of the front door of an N68-22 cabinet, responsible for filtering the wind entering the cabinet for heat dissipation purposes. During the operation of the equipment, the dust in the air will be attached on the air filtergauze.Theaccumulateddustwilldeterioratethewindpenetrationcapability through the air filter gauze, thus affecting heat dissipation efficiency and equipment stability. To ensure long-term stability of the equipment, be sure to clean the air filter gauze of each cabinet periodically (once a month is recommended). Proceed as follows: I. Removing the Air Filter Gauze out of the Front Door 1)Open the front door of an N68-22 cabinet. You can see a layer of black network gauze attached at the inner side of the front door. 2)Rip the air filter gauze out of the front door with the help of a ladder. II. Washing the Air Filter Gauze 1)Rub the metal wall at the inner side of the front door with clean and dry cloth made of cotton yarn. 2)Wash the air filter gauze with water. 3)Dry it with a spin-drier.4)Finally, air it in a ventilating place. Caution: Do not install the wet air filter gauze back to the front door; otherwise, the equipment will be damaged due to short-circuit occurring after water is absorbed into the cabinet. III. Installing the Air Filter Gauze back into the Front Door Stick the cleaned air filter gauze onto the inner side of the front door with the help of a ladder. A.2.3Cleaning Fan Frame As a part of a service frame, the fan frame is located at the bottom of the service frame, functioninginprovidingdriveforheatdissipationintheserviceframe.During equipment operation, dust will be attached on fan blades and circuit boards in the fan frame. The accumulated dust will affect the operation of the fan frame and even the service frame, thus menacing the stability of the equipment. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-6 Toensurelong-termstabilityoftheequipment,besuretocleaneachfanframeof each cabinet periodically (once a year is recommended). Proceed as follows: I. Wiping the Dust from a Backup Fan Frame Wipe the dust off the fan blades and circuit boards in the backup fan frame with clean cottonyarncloth,ESD-preventivesoftbrush,andvacuumcleaner.Afterbeing cleaned, the fan frame should be dust free. II. Replacing the Fan Frame to be Cleaned with the Backup One 1)Open the front door of an N68-22 cabinet. 2)Use a cross screwdriver to unscrew the two screws fixing the fan frame. 3)Pull the fan frame out of the service frame slowly. 4)Install the cleaned backup fan frame into the service frame quickly. 5)Screw the two screws fixing the fan frame into the side posts of the service frame with a crossover screwdriver. Caution: Be sure to complete the replacement of a fan frame within five minutes; otherwise, the security and stability of the service frame will be affected fatally. III. Cleaning the Replaced Fan Frame Wipethedustoffthefanbladesandcircuitboardsinthereplacedfanframewith clean cotton yarn cloth, ESD-preventive soft brush, and vacuum cleaner. After being cleaned, this fan frame serves as the backup one. IV. Cleaning Other Fan Frames Replace and clean the other fan frames in turn according to steps 2 and 3 until all of them are cleaned. A.2.4Cleaning Air Deflector InanN68-22cabinet,excepttheserviceframeinstalledatthebottom,theother service frames are equipped with an air deflector at the bottom of themselves. An air deflector functions as a channel for sending wind to the above service frame for heat dissipation purposes. During the operation of the equipment, the dust in the air will be attached on the air deflectors. The accumulated dust will affect the performance of the service frames and even equipment stability. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-7 Toensurelong-termstabilityoftheequipment,besuretocleaneachairdeflector periodically (once a year is recommended). Proceed as follows: I. Removing an Air Deflector out of a Cabinet 1)Open the front door of an N68-22 cabinet.2)Unscrew the four screws fixing the air deflector on the front side posts of the cabinet with a crossover screwdriver. 3)Pull the air deflector out of the cabinet slowly. Wipe the dust off the air deflector with clean cotton yarn cloth, ESD-preventive soft brush, and vacuum cleaner. After being cleaned, this air deflector should be dust free. II. Installing the Air Deflector back into the Cabinet 1)Install the cleaned air deflector into the cabinet. 2)Use a crossover screwdriver to screw the four screws for fixing the air deflector into the side posts of the cabinet A.2.5Cleaning Board Caution: To reduce maintenance risks, be sure to clean the boards during the time period with light traffic, for example, from 2:00 a.m. to 4:00 a.m. Duringtheoperationoftheequipment,thechargedionsordustintheairwillbe attached on the boards due to their electrical feature and cross-ventilation during heat dissipation of the equipment. The attachment will be more powerful if the air is less pureandtherelativehumidityislower.Theaccumulateddustwillaffecttheheat dissipationandinsulationperformanceoftheboardsfatally,thusmenacingthe equipment stability. To ensure long-term stability of the equipment, be sure to clean all boards in a cabinet periodically (once every two years is recommended). Proceed as follows: I. Preparing Backup Boards Before cleaning all the boards in a service frame, prepare a backup board for each type of board in the frame first. Suppose a service frame is inserted with the following boards, as shown in Figure A-2. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-8 ALUISBPUSBPISBPUHSYSHSYSSBPUSBPISBPUSBPUSBPUSBPUCKIICKIIEPIIVIEBEPIIHSCUHBIUHSCUHBIUEPIIVIEBEPIIEPIIEPIIEPII Figure A-2 Configuration of boards in a service frame As shown in Figure A-2, you need to prepare the backup boards for the HSYS, HBIU, SBPU, SBPI, VIEB, HSCU, CKII, UPWR, and ALUI. II. Replacing a Board to be Cleaned To avoid faults during maintenance, you must replace the board to be cleaned with a backup board according to the board replacement flow strictly. You can proceed to cleantheplacedboardonlyafterthebackupboardrunsnormally.Fortheboard replacement flow, refer to U-SYS SG7000 Signaling Gateway Maintenance Manual Parts Replacement Guide.III. Removing Dust from Boards You can clean the boards in several ways. The principal principle of these methods is topreventthephysicalandelectricalcharacteristicsoftheboardsfrombeing damaged. This manual describes two commonly used methods. Use of a vacuum cleaner Use a clean and dry ESD-preventive soft brush to slightly wipe the dust off the board surface,andatthesametimepointthesuctionnozzleofavacuumcleaneratthe brush to suck. Useofavacuumcleanerissimpleinoperationandcheapincost,butitfailsto remove the harmful gas absorbed on the board surface. Use of cleaning agent Usethededicatedanhydrous,noncorrosive,nonconductive,andhigh-volatility cleaning agent to clean the boards, for example, isopropanol (IPA). Cleaningagentcannotonlyremovethedustfromtheboardscompletely,butalso remove most of the harmful gas absorbed on the surface of the boards. However, this method is relatively complicated in operations and high in cost. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix AGrounding and Dusting Operation Guide Huawei Technologies ProprietaryA-9 Caution: ESD-preventivemeasuresmustbetakenstrictlyduringtheoperation.For example, be sure to wear ESD-preventive clothes and wrist strap when operating on the ESD-preventive workstation. Selectthecleaningagentaccordingtotherelatednationalstandardsstrictly; otherwise, boards may be damaged. IV. Cleaning the Boards in Turn Restricted by the quantity of spare parts, it is impossible to replace all the boards to be cleanedinonetime.Inthiscase,youcanreplaceaboardtobecleanedwiththe already cleaned one of the same type. Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix BCommon Maintenance Commands Huawei Technologies ProprietaryB-1 Appendix BCommon Maintenance Commands Function category Function of commandMML command Querying time of hostDSP EXTM Starting CPU usage tracingACT CPUR Querying status of fan frameDSP FANFRAM Querying running status of power distribution box DSP POWER Querying BAM versionDSP BAMVER Querying boardLST BRD Querying board informationDSP BRD Querying version number of boardDSP EXVER Querying status of MTP link configured on board DSP N7LNKBRD Querying status of ALUI power moduleDSP ALUIPOW Querying status of all boardsDSP FRM Querying phase locking status of CKII clock DSP CKIILOCK Querying working mode of CKII boardDSP CKII Querying reference source of CKIIDSP CKIIRS Querying 2 M clock output status of trunk interface board DSP TRUNK2M Querying link loopback status of trunk interface board DSP TRUNKLNKLOOP Checking status of trunk interface board DSP TRUNKLNK Querying software parameter switch of board DSP SFTSWT Querying load mode of secondary BOOTROM DSP L2BOOT Querying status of related semipermanent connection according to MTP link index DSP MTPDXCLNK Querying status of multiple semi-permanent connections DSP MULDXCLNK Equipment managementChecking data consistencyACT CNSCHK Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix BCommon Maintenance Commands Huawei Technologies ProprietaryB-2 Function category Function of commandMML command Displaying patch statusDSP PATCH Equipment management Displaying patch versionDSP PATCHVER Querying status of MTP link (multi-object query) DSP MULN7LNK Querying status of MTP link configured on board DSP N7LNKBRD Querying status of MTP link configured on multiple boards DSP SIGN7LNK Querying status of MTP link set (multi-object query) DSP MULN7LKS Querying status of MTP route (multi-object query) DSP MULN7RT Querying status of MTP DSP (multi-object query) DSP MULN7DSP Querying status of SCCP (multi-object query) DSP MULSCCP Querying status of SCCP subsystem (multi-object query) DSP MULSSN Querying GT tableLST SCCPGT Querying M3UA application server (multi-object query) DSP MULM3AS Querying status of M3UA association (multi-object query) DSP MULM3ASSO Querying status of M3UA association set (multi-object query) DSP MULM3ASSOS Querying status of M3UA route (multi-object query) DSP MULM3RT Querying status of M3UA application server (multi-object query) DSP MULM3AS Querying information of SCTP association DSP SCTPASSOC Querying status of M2PA linkDSP M2LNK Signaling management Querying timerLST TIMER Checking command log informationLST LOG Querying information about operatorLST OP Querying various information about workstation LST WS System management Backing up BAM database and registry BKP DB Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix BCommon Maintenance Commands Huawei Technologies ProprietaryB-3 Function category Function of commandMML command Querying permanent measurement data DSP TRFPERMDATADumping permanent measurement data DMP TRFPERMRST Dumping semi-permanent measurement data DMP TRFSEMIRST Service management Querying activated measurement taskLST TRFACT Alarm management Querying alarmLST ALMLOG Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-1 Appendix CMaintenance Record Table C.1Daily Maintenance Record Name of equipment: IP address: Maintenance date:Time on duty: fromto Shift fromShift to Maintenance itemMaintenance resultRemark Temperature < 15C > 30C Fire protection Normal Abnormal Humidity < 40%> 65% Dustproof conditionNormal Abnormal Equipment room environment Theftproof conditionNormal Abnormal Power supply for cabinet Normal Abnormal Power supply for LAN Switch Normal Abnormal Power supply system Power supply for server Normal Abnormal Hardware running status of BAM Normal Abnormal Software running status of BAM Normal Abnormal Communication status of BAM Normal Abnormal Communication program of BAM gateway Normal Abnormal Virus scan of BAM operation system Normal Abnormal Terminal system Virus scan on clientNormal Abnormal Power distribution frame Normal Abnormal ALUI board Normal Abnormal Alarm box Normal Abnormal Crew change guide Alarm system Alarm console Normal Abnormal Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-2 Time on duty: fromto Shift fromShift to Maintenance itemMaintenance resultRemark Communication between foreground and background Normal Abnormal Running of power distribution frame Normal Abnormal Running of fan frames Normal Abnormal Running of boards Normal Abnormal CPU usage < 80% > 80% Data consistency between foreground and backgroundConsistentInconsistent State of CKII clockNormal Abnormal State of FE port Normal Abnormal Equipment runningState of E1 port Normal Abnormal Check link load when busy Normal Abnormal Query status of MTP link Normal Abnormal Query status of MTP link set Normal Abnormal Query status of MTP route Normal Abnormal Query status of MTP DSP Normal Abnormal Query status of SCCP Normal Abnormal Query status of SCCP subsystem Normal Abnormal Query status of M3UA link Normal Abnormal Query status of M3UA link set Normal Abnormal Query status of M3UA route Normal Abnormal Crew change guide Service implementation Query status of M3UA application server Normal Abnormal Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-3 Time on duty: fromto Shift fromShift to Maintenance itemMaintenance resultRemark Query status of SCTP association Normal Abnormal Query status of PCM system Normal Abnormal Crew change guide Instrument and materials: Summary: On duty tasks Exceptions and handling methods: Unsolved exceptions: Managers comment: Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-4 C.2Monthly Maintenance Record Name of equipment:IP address:Maintenance date: Maintenance itemStateRemarkMaintenance person Time of maintenancePower supply system Completed Undone Fan Completed Undone Cables Completed Undone Grounding system Completed Undone Protection system Completed Undone Cabinets Dust-proof system Completed Undone Operator password and authority Completed Undone System time Completed Undone BAM running status Completed Undone Check command log information Completed Undone Check communication status (WS) Completed Undone Check whether there are writable shared directories on BAM Completed Undone Check whether programs unrelated to BAM are installed on BAM Completed Undone Check whether someone installs WWW server or E-mail server on the BAM without permission Completed Undone Terminal System Back up BAM database Completed Undone Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-5 Maintenance itemStateRemarkMaintenance person Time of maintenanceTerminal System Clean hard disk of BAM Completed Undone Check service measurement result Completed Undone Dump service measurement data Completed Undone Service implementation Clean useless activated measurement task Completed Undone Quantity of spare parts Normal Abnormal Spare parts Storage of spare parts Normal Abnormal Exceptions and handling methods Unsolved exceptions Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-6 C.3Yearly Maintenance Record Name of equipment:IP address:Maintenance date: Maintenance itemStateRemarkMaintenance person Time of maintenanceRestarting Completed Undone System switchover Active/standby switchover of important boards Completed Undone Data verification Data verification Completed Undone Clean fan frame Completed Undone Clean air deflector Completed Undone Cabinets Clean boards Completed Undone Exceptions and handling methods Unsolved problem Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-7 C.4Fault Handling Record Name of equipment:IP address:Maintenance date: Occurrence time:Solving time: Person on duty:Handling person: Category of fault: Hardware faultPower supply faultClock faultFE/E1 interface fault Transmission network fault Trunk link fault Fault in communication between foreground and backgroundUser terminal faultMTP linkfaultOther faults Source of fault: Customer complaint Alarm system Found in routine maintenance Other sources Description of fault: Handling method and result: Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-8 C.5Board Replacement Record Name of equipment:IP address:Maintenance date: Replacement cause Name and model of the replaced board Name and model of the new board Replacement quantity Replacement date Maintenance person Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix CMaintenance Record Table Huawei Technologies ProprietaryC-9 C.6Data Modification Record Name of equipment:IP address:Maintenance date: Modification cause Modified contentsModification timeModifier Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayAppendix DAcronyms and Abbreviations Huawei Technologies ProprietaryD-1 Appendix DAcronyms and Abbreviations AbbreviationFull expression A ASApplication Server B BAMBack Administration Module D DPCDestination Point Code DXCDigital Cross-Connect M MMLMan-Machine Language MTPMessage Transfer part M2UAMessage Transfer Part 2 (MTP2) -User Adaptation Layer M3UAMessage Transfer Part 3 (MTP3) -User Adaptation Layer N NGNNext Generation Network S SCCPSignaling Connection and Control Part SCTPStream Control Transmission Protocol SGSignaling Gateway T TCAPTransaction Capability Application Part TDMTime Division Multiplex W WSWorkstation Maintenance Manual Routine Maintenance U-SYS SG7000 Signaling GatewayIndex Huawei Technologies Proprietary i-1 Index A air deflector cleaning, A-6 air deflector cleaning, 2-14 air filter frame cleaning, A-4 air filter gauze cleaning, A-5 ALUI indicator, 2-4