Features and Applications of Raytrans 4E1 SDH Optical Terminal

The Raytrans 4E1 SDH Optical Terminal is a multi-service SDH Optical Terminal at STM-1 level, built on SDH and EOS technologies, with technical performance fully compliant with ITU-T standards. The SDH Optical Terminal provides users with access and transmission for multiple services. It offers two 155.52Mbps optical interfaces (A and B), four 10M/100M physically isolated Ethernet interfaces, up to 24 shared 10M/100M Ethernet interfaces, and four groups of E1 interfaces. It features network element timing per ITU-T G.813, VC-12 cross-connection, and path protection functions. In addition, the IDM MSTP155-16 can also serve as an add-drop multiplexer or terminal multiplexer for building point-to-point, point-to-multipoint chain, and ring transmission networks. The SDH Optical Terminal can be widely applied in telecom data services, electric power, banking, public security, military, and other sectors for public telephone network access or private line information transmission.

    The Raytrans 4E1 [SDH Optical Terminal](/en/product/) adopts a 19-inch 1U standard chassis structure for easy installation. It integrates SDH, PDH, and IP access functions into one unit, meeting most remote service access requirements. The SDH Optical Terminal supports three service slots, accommodating E1 service cards, FXS/FXO cards, V.24/V.35 cards, Ethernet expansion cards, video cards, and universal service cards, allowing flexible configuration as needed. It features multiple clock modes to meet clock requirements in various application environments, including local crystal oscillator clock, line-extracted clock, and external clock 2MBIT/2MHZ. The SDH Optical Terminal provides comprehensive monitoring and alarm functions, with front panel LEDs displaying specific alarm states and the device capable of outputting alarm information. It offers dual optical or dual electrical SDH interfaces for easy construction of chain or redundant ring topologies. The [SDH equipment](/en/product/) supports point-to-point, chain, and ring networking, and can also be jointly networked with centralized MSTP systems. The cross-connection capacity is 252×252 VC-12. In optical port mode, FC/SFP optical modules are available. It can interconnect with STM-1 optical interfaces of any standard SDH/MSTP equipment. The SDH Optical Terminal offers optional DC-48V, AC220V power supply, or dual power supplies.