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Product positioning and technical highlights
Based on a unified development platform, ZXMP S390/S380 can smoothly upgrade from ZXMP S380 to ZXMP S390, and its capacity can be smoothly upgraded from 2.5G to 10G, providing large-capacity and long-distance service transmission. It can be applied to the establishment and expansion of all kinds of transmission lines and the scheduling of large-capacity metropolitan area services to meet the bandwidth needs of different fields and different levels.

Strong crossover ability
ZXMP S390/S380 provides high-capacity, high-and low-order crossover capabilities, and rich access capabilities.

Rich multi-service access capability
ZXMP S390/ZXMP S380 provides a wealth of service interfaces, such as STM-64, STM-16, STM-4, and STM-1 optical interfaces, STM-1, E3/T3, E1/T1 electrical interfaces, 10M/100M and 1000m Ethernet interfaces, ATM interfaces, etc., and can provide highly integrated service interface boards to meet the needs of large-capacity service access.
In addition, ZXMP S390/ZXMP S380 uses the overhead bytes in SOH to provide additional data interfaces and flexible overhead paths up and down. The auxiliary interface is provided by the business board of the system, which can provide users with additional low-speed business applications. The business board can provide a multi-channel official interface, RS-232/422 interface, and F1 64kbit/s data interface.

Perfect equipment and network protection capability
ZXMP S390/ZXMP S380 adopts a redundant design in hardware, the system adopts a double-bus structure, and the cross board and clock board use 1: 1 hot backup, which greatly improves the reliability and stability of the system. In order to ensure the safety of equipment power supply, a dual power distribution system is adopted, and each function veneer adopts a distributed power supply mode, which reduces the power influence between veneers to zero and greatly reduces the influence of veneer on the system in the process of hotplug.
ZXMP S390/ZXMP S380 can realize all the network protection methods stipulated by ITU-T to meet the different networking requirements of customers. These protections include point-to-point or link 1-point-to-point or link 1-stop-1-line protection, multi-fiber link multiplexing segment 1RV N protection ring, two-fiber unidirectional protection ring, two-fiber bi-directional multiplexing section protection ring, four-fiber bi-directional multiplexing segment protection ring, dual-node interconnection protection (DNI), and subnet connection protection (SNCP). At the same time, a new concept of network protection, logical subnet protection, is proposed and implemented on the basis of ITU-T standard.

The transparent overhead transfer function
ZXMP S390/ZXMP S380 supports transparent transmission of overhead, which greatly improves the flexibility of network construction, solves the shortage of optical fiber resources, ensures the unity of network management, and the continuity of network management information, and realizes the unified management of remote subnets.

Adaptability to existing optical fiber networks
As most of the existing optical fiber networks use G.652 optical fiber, the problem of dispersion needs to be solved to transmit 10Gbit/s services on the standard G.652 optical fiber. ZXMP S390/ZXMP S380 adopts advanced dispersion management, which improves the adaptability of the system to optical fiber and ensures the adaptability of the system to the existing G.652 optical fiber network.

Perfect timing synchronization processing capability
ZXMP S390/ZXMP S380 can choose a variety of timing sources: external clock, clock extracted from STM-N service interface, and internal clock as a device timing reference. The timing system has three operating modes: synchronous locking mode, holding mode, and free oscillation mode. The system supports synchronization priority switching and automatic switching based on the SSM algorithm. In complex transmission networks, automatic switching based on the SSM algorithm can optimize the timing synchronization allocation of the network, reduce the difficulty of synchronization planning, avoid timing loops, and ensure that the network synchronization is in the best state. At the same time, ZTE SDH products provide the S1 byte algorithm with ZTE patented technology to greatly improve and optimize the ability of network synchronization.

Customer experience value
Powerful RPR data features, support the IP evolution of the network, face the future, and protect the investment.
On the basis of inheriting the advantages of MSTP, RPR solves the problems of EOS rigid pipeline and low carrying efficiency for data services with high convergence ratio and has bandwidth statistical multiplexing, service awareness, providing differentiated QoS, and so on. The embedded RPR solution makes full use of the equipment resources of the existing network to meet the increasing needs of recent data services and reduce the cost of network construction. in addition, it can also face the continuous evolution of the network in the future and protect the investment.

Support slot mixing, equipment configuration, network planning, and optimization more flexible
It can flexibly set up multiple ring networks, and each circuit board can be configured arbitrarily when setting up the ring network, and there is no east-west slot duality, so the network configuration, planning and optimization are more convenient and enhance the flexibility of the network.

The general design of business veneer to reduce the cost of spare parts.
ZXMP S390/ZXMP S380 business veneer is universal, spare parts can be shared and spare parts cost can be reduced.