C74920 Nokia Nokia Switching Systems Telecom System Card

The Nokia C74920 is an MBIF-B (Message Bus Interface Card, variant B) designed to provide internal communication pathway functionality within Nokia telecommunications switching and network infrastructure equipment. This card facilitates message routing and data exchange between system modules via the internal message bus architecture.

The MBIF-B card is typically deployed within Nokia’s legacy switching platforms, where it serves as a critical component for inter-module communication. It enables the exchange of control signalling and data between processor units, line cards, and other system modules within the chassis.

This is a legacy Nokia telecommunications component from an earlier generation of switching infrastructure. While discontinued in active production, the C74920 remains relevant for operators maintaining existing Nokia switching installations where replacement or spare parts are required.

Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.