TNW1HUNS303

TNW1HUNS303 is a Huawei line service processing board for the OSN 580, carrying 40 Gbit/s. This is the board that takes the shelf’s traffic and puts it onto the fibre as a coloured DWDM wavelength, so it is the boundary between your network and the optical line system.

Launch power is -7 to 2.3 dBm.

This is SDH-generation equipment, and SDH is a legacy transport technology. The industry moved to packet and to OTN years ago, and the OSN 580 is not a platform anyone is designing a new network around in 2026.

That is not the same as saying it is useless. A great deal of SDH is still in service carrying E1 and STM-n circuits that work perfectly well, in utilities, rail, broadcast, defence and government networks where the circuits outlive the fashion in transport technology. If that is what you are maintaining, this keeps it running. If you are being offered SDH for something new, push back.

Three things to confirm before ordering. The subrack, because a line board in a shelf with no electrical cross-connect will never carry traffic and some Huawei subrack variants have none. The software release, because board support is gated by release as well as by slot. And the FEC and rate of the board at the far end, because the two ends have to match. Send us the shelf type, the release and what is at the other end of the span and we will confirm this board works in that combination.

Green Code Technologies supplies Huawei transmission hardware, including line and tributary boards, cross-connect and control cards, optics and the shelves they go in. 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 OSN 580 equipment is worth doing. Send us the platform, the subrack and the software release and we will come back with a straight answer.