1. Langfang data communication network equipment includes 4 core routers, 7 backbone routers, 26 aggregation routers, 140 access routers, 2 core service switches, 6 access service switches, 16 county-level service switches, and 17 routers for directly affiliated units, totaling 194 routers and 24 switches. 2. One router was newly added at each of five 500kV substations in the Langfang area. 3. Supporting facility upgrades included transmission network board expansion, with 32 transmission boards added. 4. Other auxiliary facilities: cabinet, network distribution, and rack-mounted power supply installation. 5. Existing outdated equipment was removed and service transition, cutover, and migration were implemented.
