Work for the transmission backbone to support the 2G/3G/4G Cellular Network.2. Responsible for all transmission related products mainly in IPRAN Network, proficient use of the CLI command line to configure the new site, including commissioning and integration.3. Coordinate with the field engineer to support the aggregation / access layer equipment expansion in the network. 4. Responsible for the equipment SW upgrade.5. Daily network performance monitoring, alarm handling and trouble-shooting, generate regular KPI report.6. Interface to customers, coordination with internal teams, report problem to R&D...etc