Service 03
Inside plant design, where the route finally lands.
Inside plant is everything behind the door: the hut, the cabinet, the central office, the equipment room in a building. The outside route is only useful once it terminates somewhere that was designed to receive it.
ISP is not the internet provider
Worth saying once, because the abbreviation is overloaded. In this industry ISP means inside plant — the equipment, racking, cabling and power inside a structure. It is the counterpart to OSP, outside plant, which is everything between structures.
Most projects need both, and the handover between them is a real seam: a splice count that works on the route has to match the terminations the frame was built for.
Where this work happens
Equipment huts, shelters and outdoor cabinets
Central offices and headends
Telecom rooms in commercial buildings and MDUs
Co-location spaces and equipment rooms
What a package covers
Scope varies with the site, but a typical inside plant package includes:
Floor plans and equipment layouts — what goes where, and whether it fits with the clearances the space actually has
Rack and frame elevations — unit-by-unit placement, so a crew installs once
Fiber distribution — frame layout, port and position assignment, splice and termination schedules
Cable routing — ladder rack and tray runs, penetrations, bend radius and fill
Power — DC plant, rectifier and battery arrangement, breaker and fuse assignment, load against available capacity
Grounding and bonding — the part that is cheapest to design and most expensive to retrofit
Where it meets the rest of the work
The field survey establishes what the space already holds — existing racks, spare positions, available power, where the entrance conduit lands. The OSP design decides what arrives at the building. The inside plant package reconciles the two, and the as-built records what was actually installed.
Taken separately, those four steps tend to disagree with each other. Taken together they do not.
What we will and will not commit to
Drawing turnaround and revision cycles are ours, and we will put dates against them.
What we will not do is design around equipment nobody has confirmed. If the hardware list, the power budget or the available rack space is still moving, say so early — a frame elevation built on an assumption is worse than no elevation at all.
Often paired with
Bring to the first call
The site, the equipment list if you have one, and whether the space is new or already in service.
Start
Send the site.
A floor plan, a photograph of the room, or an address is enough to scope it.
Can you work in a room that is already live?
Usually, and it changes the design rather than preventing it. A space in service constrains where you can route, what you can de-energise and when the work can happen — which is exactly why the survey matters more, not less, on a live site.
Tell us it is live at the start. A package drawn as though the room were empty will not survive contact with it.