Marconi Ericsson 1HAM60840AAJ 1HBA60641AAA Marconi/Ericsson SMA/OMS/MSH86 SDH transmission systems Optical Transmission Module

The Marconi Ericsson 1HAM60840AAJ / 1HBA60641AAA is a VCAM (VC-4 Aggregate Module) optical Line Termination Unit for the Marconi SMA SDH multiplexer range, terminating an STM-level optical aggregate circuit and mapping the VC-4 tributary containers it carries onto the shelf’s internal switching matrix. The VCAM card family recurs across SMA capacity variants, including the SMA-4/16C card extender covered elsewhere in this listing, as the interface between an SMA node’s fibre-optic aggregate ports and its internal SDH cross-connect function. SMA multiplexers, inherited from GPT and Plessey and sold on to Ericsson with Marconi’s transmission business in 2006, remain in service on UK telecom, utility and rail networks running legacy SDH rings. A working VCAM LTU is required to keep an optical aggregate span in service, and genuine spares are a routine requirement as these rings continue running past the platform’s mainstream support life. Confirm the exact card issue against your shelf before ordering. Tech-Star (UK-based, shipped worldwide) stocks Marconi Ericsson SMA components to support ongoing network maintenance projects.