OLP 1+1 Optical Line Protection System for Optical Fiber Protection OTS3000-OLP optical line protection system is a kind of protector for optical line automatic switching in optical communication integrated platform. Optical Line Protection System(OLP) is an automatic monitoring and protection system which is independent of telecommunication transmission system and completely based on physical link of fiber. It has features such as independent transparent transmission, high reliability, high stability, fast fault protection, etc. https://www.glsunmall.com/product/ots3000-olp-optical-line-protection-system.html