Siemens S30810-Q2190-X telecommunications hardware (Hicom/HiPath/OpenScape PBX, SDH transmission) PBX Card / Module

The Siemens S30810-Q2190-X is an LBU (Line/Bus Control) board for the Hicom 300 system. LBU provides the connection point for terminals or data-processing systems attached to the switch, presenting two front-panel V.24 serial interfaces for that purpose, a role distinct from the peripheral extension line cards and the LTUC-family switching-fabric boards also carried in this range. Sites using an LBU board are typically running serial-connected terminals or legacy data equipment off the Hicom 300 rather than standard analogue or digital telephone extensions, an arrangement more common on the older public-sector and utility installs this platform served. As with the other Hicom 300 boards in this range, the specific hardware issue matters when sourcing a replacement since the platform ran for two decades across multiple hardware and software generations. Hicom 300 systems remain in service at many established sites, maintained board by board rather than replaced outright. Tell us the exact frame and generation this is going into and we will check the unit we hold against it. Tech-Star is UK-based and ships worldwide; contact our sales team for stock, condition and pricing.