1) Hardware sharing: Alcatel's OMSN series products currently include 1660SM (maximum rate 10Gb/s), 1662SMC (maximum rate 2.5Gb/s),  1650SMC (maximum rate 622Mb/s), 1642EM (maximum rate 622Mb/s), 1642EMC (the highest rate is 155Mb/s). All OMSN equipment is developed under a unified design concept, and many service port disks can be shared in the entire product series to reduce the cost of spare parts in an all-round way. At the same time, there is no processor on the business board, and there are no problems such as software versions. Plug and play.
 
2) Future-oriented network upgrade capability: Thanks to serialized product design and hardware sharing capabilities, Alcatel Shanghai Bell’s products have good upgrade and expansion capabilities to meet the needs of future network development and maximize the protection of operators’ current There is investment. Specifically, with the expansion of the network size, users may use smart metro core cross equipment 1678MCC (single subrack 640G cross-connect capability) with GMPLS to build an intelligent optical network at some time in the future. Carter's 1670SM and 1662SMC can be connected to the 1678MCC through an inexpensive ultra-short-distance optical interface, which can be used as an expansion subrack for the 1678MCC, with more 155M circuits and 2M circuits respectively. In this connection mode, the 1662SMC, 1670SM, and 1678MCC are managed as a unified network element on the NMS.
 
3) A new generation of node system design ideas, flexible configuration and powerful functions: OMSN adopts a node architecture, which is different from the traditional SDH   multiplexer   (ADM) and multi-ADM structure, and its advanced backplane design makes OMSN non-grouped And tributary, different service port boards are distinguished only by service rate. At the same time, it can support different network topologies. All devices can be configured as Multi-ADM, TM or even cross-connect systems to meet different needs such as ring/star/mesh in metropolitan area networks. 
 
4) Strong cross-connect capability: OMSN series products can provide powerful high-order and low-order cross-connect capabilities. For example, 1660SM can provide 640x640 VC4 equivalent high-order and 256x256 VC4 equivalent low-order cross-connect capabilities. As a 10G MSTP device, 1660SM is usually used to build the convergence layer, and one of the most important tasks of the convergence layer is to converge services to different regions as much as possible to provide bandwidth utilization efficiency of the core layer. Avoid dealing with a lot of 2M business. Assuming that two 10G rings need to be terminated at the same time and all 2M circuits in it are cross-connected, the device should have a low-level processing capability of 40G (that is, 256x256VC4), and the 1660SM is equipped with this super-low-level processing capability. Ideal equipment for constructing the convergence layer.
 
5) High integration, high flexibility and low power consumption: OMSN can provide highly integrated machine disks and systems. High level of integration and space saving. For example: 63x2Mb/s, 16xSTM-1, 4xSTM-4, 25xFE board and 8xGE board. The system is highly integrated, the subrack conforms to the ETSI standard, and is 300mm deep. All cables are routed in front and can be placed back to back. In the area of 600mmx600mm, 4 sets of 10Gb/s 1660SM systems can be placed and support 1,512 2Mb/s at the same time up and down. At the same time, the OMSN system adopts advanced centralized control, distributed feeding method, and has lower equipment power consumption.
6) Powerful unified network management capabilities: All OMSN systems and their ISA series can be managed by Alcatel’s powerful transmission network management systems 1353NM (network element layer management system) and 1354RM (sub-network layer management system)   ​unified management, making operators truly Realize end-to-end multi-service click configuration, fault location, performance monitoring and network management, so as to realize unified centralized management and control of the entire network. At the same time, 1355VPN can be used to realize optical virtual private network to provide optical value-added services. The operator's user can access the server in the operator's computer room through any PC to manage the part of the network resources he rents, which not only reduces the operator's maintenance workload, but also increases the operator's leased bandwidth Competitiveness.