ICBC-Head Office Adopts LASUN Cat6 System Products. This Network Cabling System Adopts The Star Topology, Data Backbone Is Based On Fiber, Voice Backbone Is With Cat3 Multi-Pair Cable, Horizontal Cabling Use LASUN Cat6 Twisted Pair Cable, Which Require The Speed At 1Gbps And 10M/100M/1000Mbps, To Meet The Network Information Transmission And Office Automation Application Between Branches.