Alcatel-Lucent 3AL34018AA legacy SDH/PDH transmission Telecom System Card / Module

The Alcatel-Lucent 3AL34018AA is an AUI-B2 adapter module used within Alcatel-Lucent’s PDH and SDH transmission equipment families. The AUI-B2 designation identifies it as an auxiliary unit interface adapter, providing a bridging or interconnect function between shelf sub-systems within the wider transmission platform. Cards of this type are typically fitted alongside switching, tributary and aggregate modules inside the same equipment shelf, supporting the correct routing and interfacing of traffic and control signals across the backplane. As a compact plug-in module, the 3AL34018AA is field-replaceable and can be swapped without disturbing the rest of an in-service shelf, which is important for operators maintaining legacy access and metro transmission rings where full platform upgrades are not planned in the near term. Tech-Star (UK-based, shipped worldwide) supplies tested Alcatel-Lucent legacy transmission spares including this adapter card. Get in touch with our team to confirm exact shelf and platform compatibility for your installation before ordering.