The NOKIA ASIK 474021A is a common unit that is part of the Nokia AirScale 5G gNB system module. ASIK interfaces include: 2x SFP10: for Backhaul interface Sync IN and OUT, External Alarms and Controls, LMT DC 48 V input.

Switch (1RU) to connect Basebands, Server and external connections

BaseBand Unit Case (3 RU)

Left Side

4G System Module

to connect 4G Baseband and EPC

4G Baseband Module (ABIA)

to connect 4G System Module

Right Side

5G System Module to connect 5G Baseband and EPC/5GC

5G Baseband Modules - 2 Pieces

to connect 5G System Module

Indoor Radio Control - AirScale Indoor Hub (1 RU)

Server for EPC (2 RU) to host EPC and/or 5G SA Core

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NOKIA ASIK stands for Application-Specific Integrated Circuit, which suggests that the module is specifically designed and optimized for a particular application or functionality within the baseband unit.

The BBU Flexi ASIK is designed to be compatible with Nokia's baseband unit (BBU) architecture. It may serve as a key component responsible for handling specific processing tasks within the overall baseband processing chain.