SSRD0PCXL412

SSRD0PCXL412 is a Huawei system control and cross-connect board for the OSN 1500B. It combines two jobs that larger shelves keep separate: running the shelf, meaning configuration, alarms, management access and the timing reference everything locks to, and switching the traffic between the cards.

The cross-connect is the part that sets the ceiling for the whole node. Everything the tributary and line boards carry passes through it, so its capacity, not the slot count, is what decides how much traffic the shelf can actually handle. A node can run out of cross-connect capacity while the slots and the boards appear to have room left, and that is a confusing thing to diagnose if you are not expecting it.

Check whether this configuration is protected. The cross-connect is a single point of failure for the whole node, so where it is unprotected a failure takes down every circuit in the shelf rather than one card’s worth. That is an acceptable risk in some positions and an unacceptable one in most, and it is a decision better made at order time than after an outage.

The optical interface class is L-4.1, a long haul interface at around 1310 nm with a reach of about 40 km. That class comes from an ITU standard, and the classes are not interchangeable: a short-haul interface will not reach a long-haul distance, and a long-haul transmitter on a short fibre overloads the far-end receiver and produces errors that look exactly like a fault. Match the class at both ends to the fibre you have, and attenuate where the run is short.

What to confirm. The subrack this is going into, the software release, and whether you need lower-order switching as well as higher-order. Tell us the shelf, the release and the mix of traffic the node has to groom, and we will confirm this board matches, including whether the capacity covers what you intend to populate rather than only what runs today.

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 1500B equipment is worth doing. Send us the platform, the subrack and the software release and we will come back with a straight answer.