The PTN 7900 is a 400G metro transport device developed by Huawei to cope with large 4G traffic. It is mainly positioned at the core aggregation layer and backbone network of a metro transport network to carry mobile services and VIP private line services. The PTN 7900 series has three product forms: PTN 7900-32, PTN 7900-24, and PTN 7900-12.The PTN 7900 series supports ultra-large ports such as 200GE, 100GE, and 50GE, and supports mobile-transport features such as SR-TP, FlexE, and iFIT during software upgrade. The PTN 7900 series supports 4G network upgrade to support mobile services and meets the long-term development and evolution requirements of mobile bearer networks.
The OptiX PTN 7900-32 is positioned at the core layer and backbone network of a metropolitan transport network and provides a maximum forwarding capacity of 12.8 Tbit/s.
The OptiX PTN 7900-24 is positioned at the core layer and aggregation layer of a metropolitan transport network and provides a maximum forwarding capacity of 6.4 Tbit/s.
The OptiX PTN 7900-12 is positioned at the convergence layer and large-capacity integrated access layer of a metropolitan transport network. The maximum forwarding capacity is 3.2 Tbit/s.
The PTN 7900 is a heavyweight product of Huawei's mobile bearer solution. It supports 4G network upgrade to mobile bearer and long-term evolution of mobile services, effectively reducing the total cost of ownership (TCO). It has been put into commercial use on multiple networks such as China Mobile. Based on the NP architecture, the product features large capacity and low power consumption. Based on the autonomous driving network concept, the product improves network maintenance efficiency and reduces network O&M costs.