The white-box optical-layer products of Accelink include O2, OLS L1000 optical transmission equipment and OLS M2000 series optical multiplexing equipment. Among them, O2 and OLS L1000 provides functional modules of optical signal amplification (OBA/OPA/OLA), optical protection (OP), optical cable quality monitoring (OTDR), optical channel performance monitoring (OCM) and optical supervisory channel (OSC); OLS M2000 can optionally provide a variety of standard specifications, including 48/64/96 channels (100/75/50GHz interval), realizing the multiplexing and demultiplexing functions of C-band DWDM system.