Network Management and Maintenance Center (NMMC) of Guangzhou Telecom is the core department of local network operation and maintenance.
广州电信网管维护中心是广州电信网络运行维护作业层的核心部门。
Network Management and Maintenance Center (NMMC) of Guangzhou Telecom is the core department of local network operation and maintenance.
广州电信网管维护中心是广州电信网络运行维护作业层的核心部门。
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