S30810-Q2196-X000-06 Siemens HiPath 3000/4000 PBX Expansion Card

The Siemens S30810-Q2196-X000-06 is a DIUN2 (Digital Interface Unit) trunk card designed for Siemens HiPath and HiCom enterprise PBX systems. This interface module provides ISDN PRI/E1 connectivity, enabling the PBX to connect to public telephone networks or private tie lines via digital trunk circuits.

The DIUN2 card is deployed within Siemens HiPath 3000 and 4000 series communication platforms, where it handles incoming and outgoing digital voice traffic. It is essential for organisations requiring high-capacity trunk connections with superior call quality compared to analogue alternatives.

This is a legacy component from the Siemens enterprise communications portfolio, which has since transitioned through the Unify brand following corporate restructuring. The DIUN2 remains in active service across many existing HiPath installations where replacement or expansion of trunk capacity is required.

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