I. Maintenance Objectives

Ensure the continuous and stable operation of government and enterprise operation/5G network operation equipment, provide high-quality 5G network services to government and enterprise customers, and guarantee the normal operation of various businesses. Through scientific and standardized maintenance management, reduce equipment failure rates, improve network performance and reliability, and promptly respond to and resolve problems encountered during equipment operation.

II. Maintenance Team and Responsibilities

(1) Composition of the Maintenance Team

Composed of professional personnel such as network engineers, communication engineers, equipment maintenance specialists, and technical support experts.

(2) Division of Responsibilities

1. Network Engineers: Responsible for the planning and optimization of the 5G network architecture, monitoring the network operating status, and handling network-level failures and problems.

2. Communication Engineers: Focus on the application and maintenance of 5G communication technology, ensuring the stability of communication links, and resolving problems related to communication protocols.

3. Equipment Maintenance Specialists: Undertake daily inspections, cleaning, and maintenance of equipment, promptly discover and handle equipment hardware failures, and replace damaged components.

4. Technical Support Experts: Provide technical guidance and support to the maintenance team, solve complex technical problems, and participate in the formulation and optimization of maintenance plans.

III. Maintenance Content

(1) Base Station Equipment Maintenance

1. Appearance Inspection: Regularly check the base station equipment for damage or deformation of the casing, peeling of the surface coating; check whether the antenna is loose, tilted, or damaged; check whether various interfaces have oxidation, corrosion, or loosening phenomena.

2. Performance Monitoring: Real-time monitoring of key performance indicators of the base station, such as transmission power, reception sensitivity, frequency error, and modulation accuracy, to ensure that the equipment operates within the normal range.

3. Software Updates: Promptly update the software version of the base station equipment, fix known vulnerabilities, and improve equipment performance and stability.

(2) Core Network Equipment Maintenance

1. Server Maintenance: Check the hardware status of the server, including the CPU, memory, hard disk, and network card, to ensure the normal operation of the server; monitor parameters such as server temperature, fan speed, and power supply to prevent overheating or power failures.

2. Network Switch Maintenance: Check the port status and link connection status of the switch, and check whether the port indicator lights are normal; regularly clean the switch's cache and log files to optimize the switch's performance.

3. Storage Device Maintenance: Monitor storage device capacity, read/write speed, and data integrity; conduct regular backup and recovery tests of storage devices to ensure data security.

(3) Transmission Network Maintenance

1. Fiber Optic Line Maintenance: Check whether the fiber optic line has damage, bending, aging, etc.; regularly test the attenuation and bandwidth of the fiber optic to ensure the stability of fiber optic transmission.

2. Transmission Equipment Maintenance: Conduct daily inspections of transmission equipment, check the operating status and indicator light status of the equipment; promptly handle transmission equipment failures to ensure the normal transmission of data.

(4) Equipment Room Environmental Maintenance

1. Temperature and Humidity Control: Ensure that the temperature and humidity of the equipment room are within the specified range to prevent equipment damage due to overheating or high humidity.

2. Power System Maintenance: Regularly check the power system of the equipment room, including UPS uninterruptible power supplies and distribution cabinets, to ensure stable power supply to the equipment.

3. Dust Prevention and Fire Prevention Measures: Regularly clean dust in the equipment room to keep equipment clean; check fire prevention facilities in the equipment room to ensure fire safety.

IV. Maintenance Plan

(1) Daily Maintenance

1. Daily Inspection: Maintenance personnel conduct daily inspections of equipment, checking the operating status, indicator lights, temperature, fan operation, etc., and filling out inspection records.

2. Real-time Monitoring: Real-time monitoring of equipment through the network management system to promptly detect equipment abnormalities, such as performance indicator exceeding standards or fault alarms.

(2) Regular Maintenance

1. Weekly Maintenance: Weekly cleaning of equipment to remove dust from the equipment surface; backup of equipment software configuration to prevent data loss.

2. Monthly Maintenance: Monthly comprehensive testing of equipment performance indicators to analyze equipment operation trends; inspection of fire protection facilities and power systems in the equipment room to ensure safe operation of equipment.

3. Quarterly Maintenance: Quarterly in-depth maintenance of equipment, including hardware inspection, software upgrades, and performance optimization; organization and analysis of maintenance records to summarize experience and lessons, and improve maintenance work.

(3) Emergency Maintenance

1. Fault Response: When equipment malfunctions, maintenance personnel should respond within the specified time, arrive at the fault site, and handle it.

2. Fault Handling: Maintenance personnel should quickly determine the cause of the fault based on the fault phenomenon and experience, and take appropriate measures to handle it. For complex faults, promptly report to superiors and organize technical experts for consultation.

3. Fault Recovery: After fault handling, maintenance personnel should conduct testing and verification to ensure that the equipment is restored to normal operation. At the same time, record the cause of the fault and the handling process for reference in subsequent maintenance work.

V. Maintenance Process

(1) Maintenance Application

After discovering equipment problems, government and enterprise customers or internal personnel submit maintenance applications through designated channels, specifying the equipment malfunction, scope of impact, and other information.

(2) Fault Diagnosis

After receiving a maintenance application, the maintenance team diagnoses the equipment to determine the cause and location of the fault.

(3) Maintenance Implementation

Based on the fault diagnosis results, a maintenance plan is developed, and maintenance personnel are organized to implement the maintenance, including replacing damaged parts, adjusting equipment parameters, and repairing software faults.

(4) Test Verification

After maintenance, the equipment is tested to ensure normal operation and that all performance indicators meet requirements.

(5) Maintenance Records

The maintenance process is thoroughly documented, including maintenance application information, fault diagnosis results, maintenance plans, implementation processes, and test verification results, forming a maintenance archive.

(6) Feedback and Summary

Maintenance results are fed back to government and enterprise clients or internal personnel, soliciting feedback and suggestions; the maintenance work is summarized and analyzed, the effectiveness is evaluated, lessons are learned, and this information is used for future maintenance reference.

VI. Spare Parts Management

(1) Spare Parts Reserves

Based on equipment usage and failure probability, a certain number of commonly used spare parts are kept in reserve, such as base station modules, optical modules, power modules, and hard drives.

(2) Spare Parts Procurement

When spare part inventory is insufficient, timely procurement is carried out to ensure quality and timely supply.

(3) Spare Parts Management

A spare parts management ledger is maintained, recording the inflow and outflow, inventory levels, and usage of spare parts; regular inventory and inspection are conducted to ensure the integrity of spare parts.

VII. Safety Management

(1) Personnel Safety

Maintenance personnel receive safety training to improve awareness and ensure adherence to safety procedures when operating equipment, preventing accidents.

(2) Equipment Safety

Equipment access permissions are set to restrict access by non-maintenance personnel; configuration files and data are encrypted to prevent data leakage and tampering.

(3) Network Security

Network security is enhanced through firewalls, intrusion detection systems, and other network security devices to prevent cyberattacks and virus intrusion; regular security vulnerability scanning and patching are performed to maintain network security.

VIII. Document Management

(1) Equipment Documentation

Equipment product manuals, technical specifications, installation and commissioning documents, and maintenance manuals are collected, organized, and compiled into an equipment documentation library.

(2) Maintenance Documentation

Maintenance records, fault reports, and test reports generated during the maintenance process are organized and archived for easy access and reference.

(3) Network Documentation

Network topology diagrams, equipment connection diagrams, and other network documents are drawn and updated, recording network architecture and equipment configuration information to support maintenance work.