The GPON shelf of the HiSilicon family — Class D (LNK-OM5070AX300) and Class C+ (LNK-OM5070AX200) OLT modules, documented down to wavelengths and rates.
GPON remains the volume access technology of the fibre era, and its OLT modules are specified by class because class is budget: how much optical loss — splitter stages plus kilometres of fiber — the link can absorb. This family's GPON shelf offers the two working classes: Class C+, the long-standing volume standard, and Class D, the higher-budget class for deeper splits and longer reaches, both documented at 20 km in SFP form on HiSilicon chipsets.
Unusually for a module catalogue, the documentation here goes to physics. The Class C+ anchor, LNK-OM5070AX200, is documented as designed for 20 km optical applications, compliant with the ITU-T G.984.2 GPON standard — supporting 2.488 Gbps continuous-mode transmission via a 1490 nm DFB laser and 1.244 Gbps burst-mode reception via a 1310 nm APD receiver. Those are the GPON line rates and wavelengths, stated on the module's own documentation — which is what a buyer should expect to see, and what this page insists on showing for its anchor model. The Class D shelf is headed by the LNK-OM5070AX300 (GPON OLT Class D 20km).
| Model (official product name) | Series | Documentation |
|---|---|---|
| Huawei HiSilicon E-link SFP 2488M (Tx) 1244M (Rx) GPON OLT Class D 20km (LNK-OM5070AX300) | — | Full specification confirmed per model at quotation |
| Huawei HiSilicon E-link SFP 2488M(Tx)1244M(Rx) GPON OLT Class C+ 20 km (LNK-OM5070AX200) | LNK-OM5070AX200 | Specification captured from the official product page |
| Huawei HiSilicon E-link SFP+ 9953M(Tx)2488M(Rx)&2488M(Tx)1244M(Rx) XG- PON&GPON OLT Class D 20km | — | Full specification confirmed per model at quotation |
| Huawei HiSilicon E-link SFP+ 9953M(Tx)2488M(Rx)&2488M(Tx)1244M(Rx) XGPON&GPON OLT Class C+ 20km | — | Full specification confirmed per model at quotation |
| Huawei HiSilicon E-link SFP+ 9953M(Tx)9953M&2488M(Rx) XGS-PON OLT E1 20km (LNK-OM5270SX600) | — | Full specification confirmed per model at quotation |
| Huawei HiSilicon E-link SFP+ 9953M(Tx)9953M&2488M(Rx) XGS-PON OLT E2 20km (LNK-OM5270SX700) | — | Full specification confirmed per model at quotation |
The GPON OLT models at the head of the Huawei HiSilicon Modules family (16 models in total; XGS-PON models share the family and have their own page).
Add the ODN's losses: fiber kilometres, splitter stages (a 1:32 split costs roughly 17 dB before fiber), connectors and splices, plus aging margin. If the total sits in C+ territory, C+ is the economical buy; beyond it, Class D is not an upsell, it is the difference between links that train and links that flap.
Reach and split trade against each other inside one budget. A 20 km ODN at 1:64 is a different budget from 20 km at 1:32 — state both numbers in the inquiry.
Access networks live on sparing discipline: one class per segment type, documented. If the inquiry names the existing fleet, the quotation aligns with it instead of adding a third variant to the shelf.
Design the worst segment first. If the worst segment's budget fits C+ with margin, standardise on C+. If any segment needs D, many operators standardise the fleet on D for sparing simplicity — the price difference is small against truck rolls. The budget table in your inquiry settles it.
The family is HiSilicon-based and documented as such; host compatibility is confirmed per OLT model in writing. Name the platform — this is the single most important line in a module inquiry.
Yes, per-port — and the family's combo modules exist for ports that must serve both generations. The GPON fleet and the XGS-PON fleet are separate shelves of the same family for exactly this reason.
Send the model name, the distance, the fiber type and the quantity. We will confirm the matching transmitter/receiver pairing, the optical module and the full specification of the exact model in writing before you pay.