The OptiX 155/622H Metro1000 is an STM-1/STM-4/STM-16 class box device developed by Huawei Technologies Co. It can access a variety of service types, and is applied to the access layer of metro networks and local transmission networks for large-customer leased-line access, mobile base-station access, and DSLAM ( Digital Subscriber Line Access Multiplexer) access. Access Multiplexer ) access.

For Ethernet services, Metro 1000 supports traditional TDM ( Time Division Multiplexing ) and PTN ( Packet Transport Network ) dual-plane coexistence service bearer.

The Ethernet services in the packet service plane provide a small aggregation function from multiple FE ports to one GE port.

With the support of dual-plane networking, the smooth evolution of TDM network to packet-switched network can be realized.

The application of OptiX 155/622H Metro 1000 in the network is shown in Figure 1.

Figure 1 OptiX 155/622H Metro 1000 application in a transmission network