LSU – Line Supervisory Unit (OSC)

The LSU – Line Supervisory Unit establishes an out-of-band OSC to carry management, alarms, and telemetry across your optical layer—independent of client services. Operating at a dedicated supervisory wavelength (e.g., ~1510 nm), LSU traverses amplifiers and add/drop nodes so NEs remain visible even during service interruptions. It auto-discovers network elements and topology, forwards performance/health data to the NMS, and supports protected dual-path OSC for resilient operations.
The card installs into HYD 1U/2U/5U platforms or a 1U standalone chassis and integrates cleanly with MUX/DEMUX, EDFA/Raman, OLP, OCM/OTDR/OLPM for end-to-end observability and control. Local access is available via RJ45/Console, while the supervisory optical interface uses an SFP-based OSC port for flexible reach.

• Out-of-band OSC (e.g., ~1510 nm) for management independent of payload

• Network visibility: NE auto-discovery, topology map, alarms & logs

• Resilience: dual/alternate OSC path options; revertive/non-revertive modes

• Telemetry: forwards power/fault events; coordinates with OCM/OTDR/OLPM

• Interfaces: OSC SFP port; RJ45/Console for local; dry-contact relays (optional)

• Management: Web/CLI/SNMP, Netconf/YANG for automation; syslog & traps

• Optical performance: low IL on through path, high return loss; CWDM/DWDM compatible

• Power & form factor: −48 VDC (optional AC); hot-swappable card for HYD 1U/2U/5U or 1U unit