... supports 5 hierarchical QoS levels. For mobile backhaul, The NE40E-X1/X2 supplies mature clock synchronization, such as ACR, Sync. ... GPS-grade Clock for any mobile network. The NE40E-X1/X2 also integrates intelligent functions for Fixed Mobile Convergence ( ... FMC) applications.Uniform Platform & ManagementThe NE40E-X1/X2 is part of Huawei's NE40E series which features ...