We’ve covered most of the types of NBN Node, but the “Micronode” isn’t something we’ve looked at. Micronodes are “satellites” that hang off a larger Nokia ISAM and act as NBN FTTN DSLAMs.
In NBN documentation these are referred to as “Compact Sealed DSLAMs” or CSDs, and in Nokia/Alcatel documentation these are called Sealed Expansion Modules (SEMs) – Regardless of what you call them, they act as 48 port VDSL capable DSLAMs like rest of the Nokia / Alcatel ISAM family that are used for FTTN.
They are similar in concept to the NBN FTTC program, except these units are not reverse powered, and they have a higher subscriber count.
They’re housed in the green cabinets that were used for the HFC / Pay TV networks installed in some locations underground.
The CSD are a Nokia 7367 ISAM SX-48V (White box with the heat sink on the left of the photo below) which is connected directly back to the nearest exchange.
There is also an internal PSU with batteries powered from the incoming unmetered AC supply and a PSU is supplied by Alpha technologies in the photo on the right (With the spider).
On the flip side of the unit is where the copper pairs come in, and the DSLAM X-Pairs go out, and a small fibre splice tray.
Here’s some links:
https://convergedigest.com/alcatel-lucent-intros-fixed-access