S30810-Q2196-X-7 Siemens HiPath 3000/4000 PBX Expansion Card

The Siemens S30810-Q2196-X-7 is a DIUN2 (Digital Interface Unit Network 2) card designed to provide ISDN Primary Rate Interface (PRI) connectivity for Siemens enterprise communication systems. This trunk interface module enables connection to public or private ISDN networks, supporting up to two S2M/E1 digital trunk lines for voice and data transmission.

The DIUN2 card is intended for deployment in Siemens HiPath 3000 and HiPath 4000 series PBX platforms, as well as legacy HiCom systems. It serves as a critical component for organisations requiring high-capacity digital trunk connectivity to carrier networks or for tie-line connections between PBX systems.

This is a legacy product from the Siemens enterprise communications portfolio, which was subsequently acquired by Unify (now part of Atos). While no longer in active production, DIUN2 cards remain essential for maintaining existing HiPath and HiCom installations where ISDN infrastructure is still in operation.

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