Siemens S30810-Q2938-X telecommunications hardware (Hicom/HiPath/OpenScape PBX, SDH transmission) PBX Card / Module

The Siemens S30810-Q2938-X is a TMCAS card for the HiPath 3000 and HiPath 3750 systems. TMCAS provides two Channel Associated Signalling (CAS) trunk interfaces, an older E1 signalling method still used on some legacy carrier and PBX-to-PBX trunk connections where a full ISDN/PRI signalling stack is not available or not required. As a trunk interface card it sits alongside the system’s other E1/T1-style boards rather than as peripheral extension capacity, so its loss takes a CAS-signalled trunk route out of service rather than a set of extensions. Sites still running CAS trunking are typically maintaining an older interconnect arrangement with a carrier or a legacy PBX rather than a modern SIP or ISDN trunk, which is exactly the kind of estate where a genuine matched spare of this age is hardest to source new. Genuine Siemens spares of this kind remain a routine requirement for operators maintaining CAS trunk connectivity. Confirm chassis and software compatibility before ordering. Tech-Star is UK-based and ships worldwide; contact our sales team for current stock and pricing.