iManager U2000-T: Huawei's U2000 solution to the transport domain provides end-to-end (E2E) management and fault analysis for services over the time division multiplexing (TDM) network and packet transport network (PTN) to cope with "pain points" in routine operation and maintenance (O&M) of such transport networks. This innovative solution pushes forward the O&M of transport networks by enhancing O&M efficiency and continuously reducing operational expenditure (OPEX) accordingly