To completely exert the equipments performance and function, avoid accidents, ensure the long-term safe and stable operation of devices, and lower the maintenance cost, you must take the following basic principles into consideration before maintaining the equipment:

·         Pay attention to the importance of routine maintenance. To correctly and orderly manage and maintain the equipment, you need to set up strict rules.

·         The equipment room environment must meet the national or industrial standards. The equipment room must be clean, dust-proof, moisture-proof, and rodent-resistant.

·         Maintenance personnel must be well-trained before carrying out the work. They must learn necessary maintenance knowledge, operation regulations, and industry security regulations, and grasp basic operation skills and emergency handling techniques on equipment.

·         Maintenance personnel must carry out routine check and test and record the relevant results every day according to the suggestions described in this manual.

·         If any difficulty is met during the work, maintenance personnel must record the original information in detail. Then contact Huawei customer service center or regional office of Huawei in time.

·         If any emergency occurs, maintenance personnel must handle it according to the related procedures as described in the Maintenance Manual - Emergency Maintenance. Then, contact Huawei customer service center or regional office of Huawei. See cover of this manual for the contact information.

·         The system administrator must keep the password of the administrative level confidential and modify it periodically. Passwords are classified into different levels and allocated based on the operation authorities of the maintenance personnel and workstations (WSs). This ensures a secure operation on the terminal system.

·         Record all major operations such as board switchover, system resetting, and software loading. Confirm whether the operations are feasible before carrying them out. Maintenance personnel must be competent in maintaining the system. They must perform the operations after the corresponding backup, emergency and security measures are made.

·         Maintenance personnel are prohibited from installing or running non-standard software such as firewall software, anti-virus software, games software, and pirated software on such critical computers as BAM.

 ·         Except the software delivered with the equipment by Huawei, do not use any other software to access or modify the database directly; otherwise, unexpected result may occur.

·         Modify office data under authorization and control. Maintenance personnel must back up the office data before modifying it, and record the modified content.

·         Keep sufficient spare parts in storage for the future replacement of faulty parts, especially primary boards.

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