Siemens S30810-Q2128-X telecommunications hardware (Hicom/HiPath/OpenScape PBX, SDH transmission) PBX Card / Module

The Siemens S30810-Q2128-X is an LTUC (Line Trunk Unit Control) board for the Hicom 300 system, the base board in the same family as the LTUCE (S30810-Q2248-X) and LTUCX (S30810-Q2166-X) issue variants also carried in this range. LTUC forms 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, coordinating how signals from an active control unit are selected and passed to the correct boards in the peripheral shelf. This is a structural role in the Hicom 300’s switching fabric rather than a simple extension card, and its failure affects the LTU frame’s connection to the central switch rather than a single extension or trunk line. As with the LTUCE/LTUCX issue variants, the full part code matters when sourcing a replacement since different issues are not necessarily interchangeable on every frame generation. 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.