OCU 45, Transports DS3, E3, or STS-1 over private point-to-point fiber, Single-mode fiber optics for distances up to 40 km or multi-mode fiber optics for distances up to 2 km, 1310 nm optical interface with SC (single-mode) connectors, 1U high standalone, rackmount, or wallmount unit, NEBS Level 3 compliant, External alarm relay contacts, Optical and electrical loopbacks, Supports -48 VDC, AC power available with auto-ranging AC adapter
