Siemens S30810-Q2166-X telecommunications hardware (Hicom/HiPath/OpenScape PBX, SDH transmission) PBX Card / Module

The Siemens S30810-Q2166-X is an LTUCX Line Trunk Unit Control board for the Hicom 300 system, an issue variant in the same LTUC family as the plain LTUC (S30810-Q2128-X) and LTUCE (S30810-Q2248-X) boards also carried in this range. LTUC-family boards form the interface between the signalling-channel transducer (DCL), the system’s crossbar switch (CN), and the peripheral board group (BG) of the LTU line-trunk-unit frame, a structural role in the Hicom 300’s switching fabric rather than a simple extension card. The X suffix marks this board’s specific issue or hardware revision within the LTUC family, and the full code matters when sourcing a replacement since the different LTUC variants are not necessarily interchangeable on every frame generation. As a switching-fabric interface board, its failure affects the LTU frame’s connection to the central switch rather than a specific extension or trunk. Hicom 300 systems ran large corporate and public-sector sites across Europe for two decades, and many are still working, maintained board by board. Tell us the exact frame and generation this is going into. Tech-Star is UK-based and ships worldwide; contact our sales team for stock, condition and pricing.