【多选题】
A 不能提供基本业务（无论设备瘫痪、停机、系统紊乱、环境、人为等任何原因），经过初步处理未能恢复，需要紧急处理。
Failures in providing basic services to any causes such as equipment breakdown,power off, system crash,environmental or human factors. The faults are not removed after the preliminary handling and need to be handled immediately.
B 业务处理和受理处理成功率突然下降5 %以上，或者有大量用户、重要客户投诉。
The rate of successful service handling and service provisioning operations declines 5% or more,or many subscribers or important customers complaint about the interruption or poor quality of services.
C 用户数据访问失败，或者用户数据存储完整性和一致性被破坏。
Failures in accessing subscriber data,or subscriber data completeness and consistency damaged.
D 影响其他设备提供基本业务。
Influences on basic services provisioning by other equipment.
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