I'd like to share my experience with preparing a distribution frame (ODF) for installation. We try to buy pull‑out or swing‑frame ODFs, because if something goes wrong, it's much easier to replace a damaged adapter or resplice a pigtail.
The model shown in the photo isn't the best design — when you pull the frame out, it drags the cable along with it. It's much better when the cable stays fixed and only the module tray moves.
In that respect, NAG's swing‑frame ODFs are pretty good — but they have a drawback too: you can't recess the frame slightly into the enclosure, so there's a risk of damaging connectors when closing the cabinet door.
On the left side of the photo, you can see some mounting brackets taken from other wall‑mount ODFs and splice closures — these were salvaged from unused cable entry ports. You can end up with quite a collection of these over time :)
To fit these "new" brackets, we had to do a bit of modification — drill a few extra holes. They're marked with blue and red arrows in the photo.
And here's what we ended up with:
Next, we insert the adapters, label them, install the pigtails, route them, and trim them to fit the cassette. We often don't number the pigtails — instead, we use a visual fault locator during splicing to identify the right pigtail.
Here's a photo without the cassette for clarity:
And with the cassette in place:
We're planning to route the cable along the back wall of the frame from right to left, with the modules feeding directly into the cassette. I already visited the installation site beforehand to figure out the best way to bring the cable into the frame.
But really, repositioning the mounting brackets and pigtails shouldn't be a problem.
This article is a translation of the original Russian-language post.My journey of learning GPON