A.Insufficient network coverage

B.Network interference is severe

C.The assessment indicators are not up to standard

D.Device hardware failure

E.New GSM-R/eLTE network

A.Service design

B.Expert support services

C.O&M services

D.Optimize services

A.Finalize contract terms

B.Replace the need for a quotation

C.Train end users

D.Validate solution feasibility in customer's environment

A.Huawei Technology Forum

B.Vocational and Technical College of Communication Industry

C.Huawei Authorized Training Center

A.Emergency plan preparation

B.Inspections are carried out prior to the guarantee service

C.Submit a service summary report

D.On-site spare parts guarantee (optional service).

E.On-site experts are on duty