The OptiX OSN 3500 intelligent optical transmission system (hereinafter referred to as the OptiX OSN 3500) developed by Huawei is the next-generation intelligent optical transmission switching equipment. The OptiX OSN 3500 transmits voice and data services on the same platform with high efficiency. It integrates the following technologies: Synchronous digital hierarchy (SDH) Plesiochronous digital hierarchy (PDH) Ethernet RPR(Resilient Packet Ring) Asynchronous transfer mode (ATM) Storage area network (SAN) Wavelength division multiplexing (WDM) Digital data network (DDN) Automatically switched optical network (ASON) Microwave Technology 1.Appearance of the OptiX OSN 3500 The OptiX OSN 3500 is mainly used at the convergence layer and the backbone layer of the metropolitan area network (MAN). The OptiX OSN 3500 can also be networked with the other OSN equipment to optimize the investment for customers. The OptiX OSN 3500 can be networked with the following equipment: OptiX OSN 9500 OptiX OSN 7500 OptiX OSN 3500 II OptiX OSN 2500 OptiX OSN 2500 REG OptiX OSN 1500 OptiX 2500+(Metro 3000) OptiX 155/622H(Metro 1000) 2.Network application of the OptiX OSN 3500 the OptiX OSN 3500 is mainly used at the convergence layer and backbone layer of the metropolitan area network (MAN). The network application scenarios are described as follows: In TDM networking, can be networked with the other OptiX transmission equipment (the OptiX OSN 9560, OptiX OSN 9500, OptiX OSN 7500 II, OptiX OSN 7500, OptiX OSN 3500 II, OptiX OSN 2500, OptiX OSN 1500, OptiX OSN 500, and OptiX OSN 550) to optimize the carriers investment. With the packet switching technology, can constitute a packet data transmission network with the other OptiX transmission equipment (the OptiX OSN 7500 II, OptiX OSN 7500, OptiX OSN 1500, OptiX OSN 500, OptiX OSN 550, OptiX PTN 910, OptiX PTN 950, OptiX PTN 1900, OptiX PTN 3900, and OptiX RTN 900) to meet the requirement for bearing IP services. Can be flexibly networked with WDM equipment and Metro equipment. Can transparently transmit services over third-party Layer 2 networks, allowing end-to-end configuration and management. 3.Structure An OptiX OSN 3500 subrack has a two-layer structure. The subrack consists of an interface board area, a processing board area, a fan area, and a cable routing area. the structure of an OptiX OSN 3500 subrack. 1. Interface board area 2. Fan area 3. Processing board area 4. Cable routing area The functions of the areas are as follows: Interface board area: This area houses the interface boards of the OptiX OSN 3500. Fan area: This area houses three fan modules, which dissipate heat generated by the equipment. Processing board area: This area houses the processing boards of the OptiX OSN 3500. Cable routing area: This area houses fiber jumpers in a subrack. NOTE: An interface board is also called an access board or a transit board. An interface board provides physical interfaces for optical signals and electrical signals, and transmits the optical signals or electrical signals to the corresponding processing board.
