Nokia · Baseband & Digital Units
Nokia Flexi and AirScale system modules
Nokia calls the baseband a system module, and as with its radio hardware the platform split governs everything: FSMF and FSIH are Flexi system modules, ASIA, ASIB, ABIA and ABIO are AirScale. A Flexi radio needs a Flexi system module and an AirScale radio needs an AirScale one, so the system module is usually the item that determines whether a site can be expanded at all or has to be replaced wholesale. The modules listed here cover both generations, and Flexi is the one operators most often cannot buy new.
How to read these part numbers
The four-letter product code identifies the module and its generation. Codes beginning `FS` are Flexi system modules — FSMF, FSIH — while codes beginning `AS` and `AB` are AirScale: ASIA and ASIB are AirScale system modules, ABIA and ABIO are AirScale baseband plug-in units. The accompanying part number in the form `474020B.101` gives the hardware variant after the dot, and variants within one code can differ in capacity. Quote the four-letter code and the full part number including the suffix.
Catalogue
Equipment reference
| Part Number | Model / Designation | Compatibility | Band / Interface | Condition | Lead Time | Quote |
|---|---|---|---|---|---|---|
| 085420A.102 | FSMF | On enquiry | Power connector | On enquiry | On enquiry | |
| 085570A.102 | FSIH CORE | On enquiry | Baseband Station Unit motherboard | On enquiry | On enquiry | |
| 086386A (995572A + 995298A) | Site Bag for FBBC | On enquiry | On enquiry | On enquiry | On enquiry | |
| 472181A | FSMF | On enquiry | Base Station Equipment for NOKIA BTS BBU | On enquiry | On enquiry | |
| 472181A.102 | FSMF | On enquiry | On enquiry | On enquiry | On enquiry | |
| 472182A | FBBA | On enquiry | On enquiry | On enquiry | On enquiry | |
| 472182A | FBBA 084796A | On enquiry | On enquiry | On enquiry | On enquiry | |
| 472182A 103 | FBBA | On enquiry | On enquiry | On enquiry | On enquiry | |
| 472182A.103 | FBBA | On enquiry | High capacity System Module with multiradio capability | On enquiry | On enquiry | |
| 472567A.101 | FSIH | On enquiry | 4G LTE | On enquiry | On enquiry | |
| 472797A | FBBC | On enquiry | On enquiry | On enquiry | On enquiry | |
| 473095A.202 | On enquiry | On enquiry | ASIA | On enquiry | On enquiry | |
| 473096A.103 | ABIA | On enquiry | Airscale capacity card | On enquiry | On enquiry | |
| 473096A.103 | Nokia ABIA | On enquiry | Signal Processor, Airscale Capacity Card | On enquiry | On enquiry | |
| 473764A.102 | ASIB | On enquiry | 5G NR | On enquiry | On enquiry | |
| 473952A | AMOB | On enquiry | AIRSCALE SYSTEM MODULE OUTDOOR SUBRACK | On enquiry | On enquiry | |
| 474657A.101 | APHA | On enquiry | AIRSCALE INDOOR RADIO ASIR-HUP | On enquiry | On enquiry | |
| 474933A.101 | AHENB | On enquiry | AIRSCALE INDOOR RADIO ASIR-ANT | On enquiry | On enquiry | |
| 475266AAlso: 475266A.104 | ABIO | On enquiry | 5G NR | On enquiry | On enquiry | |
| 995572A | Power cable assembly FBBC | On enquiry | On enquiry | On enquiry | On enquiry | |
| AMOB 473952A | AMOB | On enquiry | Airscale System Module Outdoor Subrack | On enquiry | On enquiry | |
| Nokia 474020B.101 | On enquiry | 5G NR | On enquiry | On enquiry |
Cannot find a part number? Send us the number and we will identify and price it.
Ordering notes
Confirm your platform generation first, then the capacity you need expressed in cells and carriers per technology rather than as a module name. State the software release, because Nokia enforces release dependencies on system modules as firmly as on radios. If you are expanding an existing site, tell us what is already installed and how many plug-in slots are free — an AirScale system module accepts baseband plug-ins and the useful question is often which plug-in to add rather than which module to buy.
Lifecycle and availability
Flexi system modules are end-of-sale and progressing through end-of-support; they are supplied here as new surplus and refurbished stock with CRS PLUS warranty. AirScale system modules and baseband plug-ins remain in production. Status is given per line.
Equipment condition
New — factory-sealed, supplied through the manufacturer's own channel or a qualified distributor, with full manufacturer warranty.
New surplus — unused factory stock, original packaging where available, sourced from decommissioned projects or distributor inventory. Manufacturer warranty may have lapsed; CRS PLUS warranty applies.
Refurbished / tested — previously deployed equipment, cleaned, firmware-checked and functionally tested against the manufacturer's specification before shipment. CRS PLUS warranty applies.
Condition is confirmed in writing on every quotation before you commit to an order.
Warranty
Warranty terms vary by item, by condition and by the supplier the equipment is sourced from. They are stated in writing on the quotation, per line item, before you commit to an order.
Where equipment is supplied new through the manufacturer's own channel, the manufacturer's warranty applies and is passed to you.
Send us the part numbers you need and we will confirm warranty terms alongside availability, condition, lead time and price.
Questions
Frequently asked questions
Can an AirScale system module drive Flexi radios?
No. The platforms are not cross-compatible, and this is the single most consequential fact in any Nokia hardware decision. Extending a Flexi site means sourcing Flexi hardware, or replacing the radio and system module together.
What is the difference between a system module and a baseband plug-in?
The system module is the chassis and control element; baseband plug-ins such as ABIA add processing capacity into it. Capacity expansions are often a plug-in rather than a new system module, which is considerably cheaper.
Are FSMF modules still obtainable?
Yes, through surplus and refurbished channels. This is one of our more common Nokia enquiries precisely because the platform can no longer be bought new while a great deal of it remains in service.
Do you quote radio and system module together?
Yes, and for Flexi we recommend it — a matched set removes the compatibility risk that arises when the radio and the system module are sourced separately from different suppliers.
Related pages
Manufacturer names, product names and part numbers are the property of their respective owners and are used here for identification purposes only. CRS PLUS sources these products through its qualified supplier base and holds no distributor, reseller or agency appointment from any manufacturer listed.
This catalogue is compiled from our supplier network's available inventory and from manufacturer product documentation, and is reviewed monthly. Listing does not indicate stock held by CRS PLUS — availability, condition and lead time are confirmed per enquiry. Last reviewed: 22 August 2026.
Need a part number from Baseband & Digital Units?
A structured offer follows within 72 hours.