Nokia 472181A FSMF – Flexible System Module Fabric

The Nokia 472181A FSMF (Flexible System Module Fabric) is a high-performance baseband processing and system control module developed for Nokia Flexi Multiradio and AirScale base station platforms. Acting as the central fabric of the base station, the FSMF manages baseband processing, transport connectivity, synchronization, and overall system control.

Designed for multi-technology mobile networks, the Nokia FSMF supports GSM, WCDMA, and LTE, making it ideal for operators upgrading legacy networks while maintaining high performance and scalability. Its modular architecture allows network capacity to grow efficiently without replacing the entire baseband system.

Scalable and Future-Ready Baseband Solution

The Nokia 472181A FSMF is built on a flexible and scalable architecture. Capacity can be expanded through compatible baseband extension modules, enabling operators to adapt to increasing traffic demands. This modular design helps reduce operational costs and extends the lifecycle of existing base station deployments.

High-capacity internal fabric and transport interfaces ensure reliable communication between baseband resources and remote radio units (RRUs), delivering low latency and stable performance in demanding telecom environments.

Reliable Operation and Precise Synchronization

To ensure consistent network quality, the FSMF supports advanced synchronization technologies, including GPS and IEEE 1588v2 (PTP). These features enable precise timing alignment across radio units, which is essential for efficient LTE operation and inter-cell coordination.

The module is designed for indoor rack-mounted installations and features active cooling to support continuous operation in mission-critical network environments.

Technical Specifications – Nokia 472181A FSMF

Product Name: Flexible System Module Fabric (FSMF)
Part Number: 472181A
Manufacturer: Nokia

General

• Function: Central baseband processing and system control module

• Platform Compatibility: Nokia Flexi Multiradio / AirScale systems

• Supported Technologies: GSM, WCDMA, LTE

Interfaces & Connectivity

• Optical Interfaces: Multiple SFP / SFP+ ports for RRU and transport connections

• Ethernet: RJ45 electrical port for backhaul / S1 connectivity

• Expansion Interfaces: Internal QSFP connectors for baseband extension modules

• Management: Local maintenance and system management interfaces

• Synchronization: GPS and IEEE 1588v2 (PTP) support

Performance & Scalability

• Modular design supporting capacity expansion

• High-capacity internal fabric for baseband data processing

• Optimized for multi-sector and multi-carrier deployments

Physical Characteristics

• Form Factor: Rack-mountable base station module

• Height: Approx. 3U

• Cooling: Active cooling

• Installation: Indoor

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