ZTE ZXWM M820
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Unitrans ZXWM M820 Dense Wavelength Division Multiplexing Optical Transmission Equipment is a metro oriented transmission system. It can multiplex up to 192 wavelengths (uni-direction) in a single-core fiber, with a total transmission capacity of 1.92 Tbit/s in a 10G system, 3.84 Tbit/s in a 40G system, and 8Tbit/s in a 100G system. It offers full-rate optical access capability from STM-1/ OC-3 to 100GE, as well as complete access capability for other services, such as POS, ATM, Ethernet, and PDH. ZXMP M820 rack.
Based on the development idea of “creating free, powerful and scalable optical transmission networks”, ZTE develops its new-generation of digital transmission products including Unitrans ZXWM M920 DWDM equipment which provides large bandwidth and long-haul transmission at the backbone layer, ZXMP M820 DWDM equipment, ZXONE 8000 DWDM equipment, ZXMP M721 DWDM/CWDM equipment, and ZXMP M600 CWDM equipment.
The new-generation digital transmission products of ZTE can satisfy all applications from the backbone network to end-user access, and provide users with future-oriented overall transmission solutions. The applications of ZTE’s optical transmission products is shown in Figure 1
Figure 1 ZTE’s New-Generation Digital Transmission Product Family
Support 80/96x10G, 80/96x40G,80 x100G, and modular upgrade.
100Gb/s system adopts PM-QPSK modulation to support SD-FEC technology with good OSNR tolerance. The industry’s advanced DSP processing technology can support the 60ps of PMD tolerance and +/ -70,000 ps/nm of chromatic dispersion tolerance. Transmission distance can reach over 5,000 kilometers without an electrical relay, which saves the investments and facilitates maintenance.
Three-dimensional traffic grooming
Support 2-9 degree ROADM, and offer l-level cross-connect scheduling function;
Support centralized cross-connection at granularities of ODU0/1/2/ 2e/3/3e2/ 4/flex.
Support L2 switching functions, such as aggregation, VLAN, QinQ, and L2 QoS.
Enable any service schedule from the electronic layer to the photonic layer to enhance network flexibility.
Self-adaptive multi-service access
Support the client supports 100M-100G any service access: the access of STM-N, FE/GE/10GE/ 40GE/100GE, OTU1/2/3/ 4, DVB, ESCON and FC services.
The universal service access board enables the hybrid transmission of the operator’s multiple services.
Complete network protection
Provide perfect photonic layer and electronic layer protection schemes, in which, the unique and patented path shared protection technique realizes higher system wavelength utilization and lowered network construction investment.
Photonic layer protection: path shared ring protection, multiplex section shared ring protection, sub-network connection protection, 1 +1 multiplex section protection, optical line protection.
ODUk layer protection: ODUk sub-network connection protection, ODUk shared ring protection.
L2 protection: ESR Ethernet ring protection.
Highly reliable system architecture
Provide 1 +1 backup for main control unit, power module unit, cross-connect unit, and common interface unit, and adopt a high-reliability design at the sub-rack level and cross-sub-rack level.
Support GMPLS-based WASON control plane, and enable auto-discovery of network resources and topology, auto-routing and auto-switching of signaling, as well as auto-setup of service route, fast end-to-end service provisioning, traffic grooming, and traffic control, boosting network survivability and improving network resource utilization.
Highly integrated and low power consumption
A single cabinet supports 80 wavelengths, resulting in equipment room space-saving and power consumption reduction and greatly lowering operation & maintenance expenses. The average power is 29.105 W per wavelength
Smooth upgrade of the system
Support smooth upgrade from 10G system to 100G system.
Support smooth upgrade of 100GHz- > 50GHz spacing.
PIC (photonic integrated circuit).
Single sub-rack can support service access, cross-connection, MUX/DEMUX, optical amplification, clock processing, and transmission functions. By adopting PIC technology, lower power consumption and cost-effectiveness can be realized.
Support out band 1588V2 transmission and synchronous Ethernet transmission.
Intelligent management of the system.
Support APO automatic performance optimization to keep the system in optimal performance, drive down maintenance cost, and automatically adapt to changes of environmental parameters.
Provide IWF, the patented centralized wavelength control technique to ensure wavelength stability in 50GHz- and 25GHz-spacing systems.
ECC/DCC supports OSPF protocol, realizing the auto-discovery of NE and automatic routing configuration and achieving good network scalability.