SLESSFPK05

SLESSFPK05 is an enhanced small form-factor pluggable module over a rated reach of 10 km. It is the part that turns electrical signals into light at one end of a fibre and back at the other, and it is the component most often got wrong on an order, because two modules can look identical and be entirely incompatible.

This is a single-mode module and needs single-mode fibre. It will not work usefully over multimode, and the reverse is also true, so the fibre type has to be confirmed rather than assumed, particularly inside buildings where both are often present in the same riser.

It is specified for CPRI, the interface between a radio base station’s baseband and its radio heads. CPRI is far less tolerant of delay and delay variation than ordinary Ethernet, because the radio protocol’s timing depends on it, so a fronthaul link has constraints that a transport engineer used to data services will not expect. Confirm the latency budget as well as the loss budget.

The RTN 380 is a Huawei microwave platform, and its lifecycle status is genuinely unclear. Huawei’s RTN line as a whole is still an active product family, but the position of this particular model could not be established: Huawei’s lifecycle database sits behind a login and model-level end-of-sale and end-of-support dates are not published openly.

So this page will not tell you the platform is current and will not tell you it is finished, because neither can be checked from outside. If that distinction matters to your purchase, and on microwave it often does because licensed-band links tend to live for a decade, ask us to confirm it with Huawei before you commit.

One thing to raise before you order. Huawei transmission equipment generally expects Huawei-coded optics, and a module without the right vendor coding may be refused outright or raise a persistent alarm even when it is electrically identical to the correct part. We supply coded modules for that reason. Tell us the platform, the port, the fibre you have and the distance, and we will confirm this is the right module or point you at the one that is.

Green Code Technologies supplies Huawei optical modules alongside the transmission equipment they fit. We are a supplier of Huawei alongside HPE, Dell, Cisco, Samsung and Netgear, and we would rather confirm a part against Huawei’s own documentation than sell you the wrong one, which on RTN 380 equipment is worth doing. Send us the platform and port at each end, the fibre you have and the distance and we will come back with a straight answer.