Alcatel-Lucent 3AL34069AAAD03 legacy SDH/PDH transmission Optical Transmission Module

The Alcatel-Lucent 3AL34069AAAD03 is an L-4.2 STM-4 long-haul optical aggregate interface card, built for Alcatel-Lucent’s legacy SDH transmission shelves. The L-4.2 designation identifies this as a long-haul optical variant operating at the STM-4 rate (622 Mbit/s), intended for aggregate links that need to span longer fibre distances than a standard short-haul interface would support. It plugs into the aggregate slot of a compatible Alcatel-Lucent SDH shelf, providing the optical line-side connection that carries multiplexed tributary traffic between network sites across metro and regional spans. As a field-replaceable module, it allows maintenance engineers to restore or extend long-haul aggregate capacity on an in-service ring without disrupting the rest of the shelf. This type of card remains in demand for operators maintaining legacy SDH backbone links where the long-haul optical budget is a key requirement. Tech-Star (UK-based, shipped worldwide) supplies tested Alcatel-Lucent legacy SDH optical spares including this aggregate card. Get in touch with our team to confirm optical budget and shelf compatibility before ordering.