3Com (US Robotics) 69-000397-00 / US Robotics Total Control multi-service access platform Telecom System Card / Module

The 3Com (US Robotics) 69-000397-00 is a Dual E1/PRI Network Access Card built for the 3Com/US Robotics Total Control multi-service access platform, a modular carrier and enterprise-grade chassis used widely for dial and ISDN access aggregation. As a Network Access Card, this board provides the E1/PRI trunk-side interface into the Total Control chassis, terminating two Primary Rate ISDN/E1 circuits and handing traffic off to the chassis’s digital modem and processing resources over the shared backplane bus. Total Control systems of this generation were deployed extensively by ISPs and enterprises for dial-up remote access, and dual-span trunk cards such as this one remain a routine spares requirement for operators still running or maintaining this hardware generation. Genuine, tested cards support restoring full trunk capacity after a card failure, adding redundancy, or expanding an existing chassis’s E1/PRI trunk count. Specifiers should confirm exact chassis and firmware compatibility before ordering, since Total Control card revisions were tied to specific system software levels. Tech-Star (UK-based, shipped worldwide) stocks tested components to support ongoing network maintenance projects. Please contact our sales team for current stock and pricing.