To identify a used Huawei board or RRU, read three things on the unit: the model name printed on the panel or label (for example UBBPg2, UMPTg3 or RRU5904), the BOM code that identifies the exact hardware item, and the bar code (serial number) that identifies the individual unit. The model name tells you what the unit is, the BOM code tells you which exact variant it is, and the bar code lets you trace that one piece. This guide explains how each one is structured and how to use them when you buy, sell or stock Huawei RAN equipment.
Why the model name alone is not enough
Huawei reuses the same family name across several hardware variants. “UBBP” covers multiple generations (d, e and g series) and many sub-models within each generation, and the same RRU model is built in different frequency-band versions. Two boards that both say “UBBP” on a quote can differ in capacity, supported RATs and the BBU frames they fit. When a quote or a stock list shows only “UBBP” or “RRU5904”, ask for the full model with its suffix and band, plus a clear photo of the label.
The three identifiers on a Huawei unit
| Identifier | Where to find it | What it tells you |
|---|---|---|
| Model / board name (e.g. UBBPe4, UMPTe3, RRU3971) | Printed on the front panel of BBU boards; on the label of RRUs | Product family, generation and sub-model |
| BOM code (item number) | Label on the board or radio; also inside the bar code | The exact hardware item, including variant |
| Bar code / serial number (SN) | Bar code label on the board panel or radio housing | The individual unit: item, vendor code, production date and sequence |
Huawei’s own documentation describes the board bar code as carrying basic information about the board, including the BOM code and delivery time. That is why the bar code is the single most useful thing to photograph.
How to read Huawei board names
BBU frames
The frame number shows the platform generation. The BBU3900 and BBU3910 belong to the 3900 series; the BBU5900 is the 5G-ready platform. A board that works in one frame does not automatically work in another, so always check the frame model as well as the board model.
UBBP baseband boards
UBBP boards are named by generation letter and a number, for example UBBPe4, UBBPe6, UBBPg1, UBBPg2 and UBBPg3. Some models have an “a” suffix, such as UBBPg1a and UBBPg2a. The suffix is part of the model and indicates a different variant, so UBBPg2 and UBBPg2a should be treated as two separate items on a parts list. Our Huawei UBBPg2 and UBBPg2a are listed separately for that reason.
UMPT main control boards
UMPT boards follow the same pattern: a generation letter plus a number, for example UMPTe3, UMPTe5, UMPTg3 and UMPTg5. The generation affects which BBU frames and software releases support the board. For example, the UMPTg3 is a BBU5900 board.
RRUs
Huawei RRU names combine a series number and a model number, such as RRU3971 (3900 series) or RRU5904 and RRU5909 (5900 series). Some models add a letter, for example RRU5304w or RRU5509t, and that letter is part of the model. The same RRU model is produced for different frequency bands, so the band is just as important as the model: an RRU5904 for 1800 MHz cannot replace an RRU5904 for 2100 MHz. Check the band on the label, as on our RRU5904 1800 listing.
How the Huawei bar code (SN) is structured
Huawei serial numbers are printed as bar codes and come in 12, 16 or 20 characters made of digits and letters. The length tells you which format you are reading. Most RAN boards and radios built in recent years carry the 20-character format.
| Format | Structure | Notes |
|---|---|---|
| 20 characters | “21” + 8-character item (BOM) code + 2-character vendor code + 2-character date code + 6-character sequence | The BOM code can be read directly from positions 3 to 10 |
| 16 characters | Last 6 characters of the item code + 2-character vendor code + 2-character date code + 6-character sequence | Only a partial item code is included |
| 12 characters | 2-character vendor code + 3-character date code + 7-character sequence | Older format; the BOM code is on a separate label |
Reading the date code
In the 16- and 20-character formats, the date code is two characters: the first is the year and the second is the month. The year uses 0–9 for 2000–2009 and letters from A onward for 2010 and later (so “B” is 2011). The month uses 1–9 for January to September and A, B, C for October, November and December. In the older 12-character format, the year is written as two digits followed by one month character.
The production date is useful for checking that a batch is consistent and for spotting labels that do not match the unit. It does not by itself tell you anything about condition; a unit’s history and test results matter more than its age.
Checking the electronic label
Huawei boards also store an electronic label that the management system can read once the unit is powered and connected. It typically reports the board type, bar code, BOM code, description, production date and vendor. On Huawei’s GSM BSC, for example, the DSP ELABEL command queries the electronic label of BSC and BTS boards. Comparing the electronic label with the printed label is a reliable way to confirm that a board is what its sticker says, because a printed label can be damaged or replaced, while the stored label stays with the hardware.
What to record for every unit
Whether you are building a stock list, requesting a quote or receiving a shipment, record the same fields for each unit:
- Full model name including any suffix (e.g. UBBPg1a, not UBBPg1)
- Frequency band for radios (e.g. 1800 MHz, 2100 MHz)
- BOM code
- Full bar code / SN
- Clear photo of the label and of the front panel or connector side
- Target BBU frame and software release for boards
With these fields, the other side can confirm the exact item without guessing. For boards, also check frame compatibility; our Huawei BBU5900 board compatibility guide covers which UBBP and UMPT boards fit BBU3900, BBU3910 and BBU5900.
Common identification mistakes
- Dropping the suffix. Writing “UBBPg2” when the unit is a UBBPg2a, or “RRU5304” for an RRU5304w, leads to the wrong part arriving.
- Ignoring the band. An RRU model name without a band is incomplete.
- Confusing the BOM code with the SN. The BOM code is shared by every unit of the same item; the SN is unique to one unit.
- Relying on a photo of the panel only. The panel name is a good start, but the bar code label is what confirms the exact item.
FAQ
Where is the BOM code on a Huawei board?
It is printed on the board label and, in the 20-character bar code, it is embedded as the 8 characters after the leading “21”.
Are UBBPg2 and UBBPg2a the same board?
No. The “a” suffix marks a different variant. Treat them as separate items and confirm compatibility with your BBU frame and software before ordering.
Can I tell the production date from the serial number?
Yes. In the 16- and 20-character formats, the two characters after the vendor code give the year and month of production.
What photos should I send to confirm a Huawei part?
A sharp photo of the bar code label, the model name on the panel or housing, and for radios the band marking. These three let the part be identified exactly.
Buy tested Huawei boards and RRUs
We stock used and refurbished Huawei BBUs, UBBP and UMPT boards and RRUs; browse the full range in our Huawei category. Every unit is functionally tested before shipment, and radio units such as RRUs are also VSWR tested. All units come with a 90-day warranty, and we ship worldwide in secure packaging. Send us your model list, including suffixes and bands, via WhatsApp +86 187 3329 4669 / +86 139 3088 8705, email jack@telecombts.com, or the form at https://telecombts.com/contact-us/. We also buy surplus Huawei, Ericsson and Nokia equipment — see sell your equipment.