Marconi Ericsson AN00231484 Marconi/Ericsson SMA/OMS/MSH86 SDH transmission systems Optical Transmission Module

The Marconi Ericsson AN00231484 is an alarm Line Termination Unit for the Marconi SMA SDH multiplexer range, collecting external alarm and status inputs into the shelf’s alarm and management system in the same functional role as the SMA 4/16 alarms card covered elsewhere in this listing, but under Marconi’s AN-prefixed part numbering rather than the 1HAx scheme used on other SMA cards in this batch, both schemes appear across genuine Marconi SDH stock. A working alarm LTU is what lets a site’s SMA node report faults back to a network management centre rather than running unmonitored, so it is a routine spare even on shelves where traffic-carrying cards remain healthy. SMA equipment, inherited via GPT and Plessey before Marconi’s transmission business passed to Ericsson in 2006, remains in service on UK utility, rail and private telecom networks. Confirm your exact shelf and alarm-wiring configuration before ordering. Tech-Star (UK-based, shipped worldwide) stocks Marconi Ericsson SMA components to support ongoing network maintenance projects.