Siemens S30810-Q661-X-15/02 EWSD digital switching exchange Telecom System Card / Module

The Siemens S30810-Q661-X-15/02 is a genuine card from the EWSD (Elektronisches Wahlsystem Digital) digital switching exchange platform, one of the most widely deployed carrier-grade telephone switching systems worldwide. Siemens developed EWSD from the late 1970s onward and continued production and support through Siemens Networks and Nokia Siemens Networks, with systems still running in fixed-line networks across many countries handling local, tandem and international call switching. EWSD uses a modular, card-based architecture: each board in the system, including this one, plugs into a specific rack position within the digital line unit, switching network, coordination processor or peripheral module group to carry out a defined switching, interface, control or signalling function as part of the wider exchange. This unit carries genuine Siemens material code S30810-Q661-X-15/02, consistent with the material-code numbering convention used across the EWSD card family. Exact function and compatibility depend on the software release and hardware generation of your specific EWSD installation. Tech-Star (UK-based, shipped worldwide) supplies genuine tested EWSD spares to network operators and maintenance engineers supporting legacy digital exchange infrastructure. Get in touch to confirm fit for your configuration, request testing details, or discuss lead time before you order.