ALCATEL 3AL78856BEAE -Lucent 1660SM L-4.2N Telecom System Card / Module

The Alcatel-Lucent 3AL78856BEAE is an L-4.2N long-haul STM-4 optical port card for the Alcatel-Lucent 1660SM SDH transmission platform, a metro and regional transport system supporting speeds up to STM-64. The L-4.2N card provides a long-haul STM-4 optical line interface, terminating STM-4 optical signals and passing demultiplexed traffic into the shelf’s cross-connect matrix for onward routing to tributary cards; the family covers both FC/PC and SC/PC connector variants depending on the specific part number. The 3AL78856BE base part number is confirmed as the L-4.2 long-haul port card variant for the 1660SM platform, distinct from the shorter-reach L-4.1N cards in the sibling 3AL78856BC range. This unit carries the AE revision suffix, a separate production batch from the AD-suffix variant of the same board type. It is commonly sourced as a tested pull for maintaining an existing 1660SM long-haul STM-4 ring or provisioning spares where new-build SDH hardware is no longer manufactured. Tech-Star (UK-based, shipped worldwide) stocks tested Alcatel-Lucent 1660SM line, matrix and power cards; contact our engineers to confirm the exact connector/reach variant needed for your ring before ordering.