Linfen Optical, Optical Wholesale

Optical classified from the interface should be video Optical audio Optical data Optical, Optical Ethernet Optical divided into three categories: PDH, SPDH, SDH. PDH (Plesiochronous Digital Hierarchy, quasi-synchronous digital hierarchy) is a small-capacity Optical Optical, usually paired application, also known as point to point applications, capacity is generally 4E1,8E1,16E1. SDH (Synchronous Digital Hierarchy, Synchronous Digital Hierarchy) Optical larger capacity, generally 16E1 to 4032E1. SPDH (Synchronous Plesiochronous Digital Hierarchy) Optical, between PDH and SDH. SPDH is PDH transmission system with SDH (Synchronous Digital Hierarchy) features (PDH principles of justification, but also maximize the use of SDH network technology based in part). Monitor term, then it is video optical transmission of video-based and other data transmission equipment photoelectric conversion, audio, digital, Ethernet and telephone signals, his essence is: a photoelectric conversion transmission equipment; on both ends of the cable, a close first serve, as the name suggests Optical; so Broadly speaking, the photoelectric conversion device for transmitting signals based on fiber-optic network can be called in this classification for telecommunications Optical transmission signal (also compressed video) Optical and use compression. to monitor and broadcast television industry uncompressed video optical transceiver.