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The Provision of Network Change Management Services, Resources and Technical Support for Key Event Assurance, the Reception, Handling, Emergency Recovery and Closure of technical service request by Huawei Technologies Co., Ltd. Global Technical Assistant Centre(GTAC), including Wireless Network, Cloud Core Network, Carrier Software, Data Communication, Optical Transmission Network, Optical Access Network, Single OSS&NCE(Operations Support System & Network Cloud Engine),IT Products and Digital Power Products. |