Data cabling for a small business.

When we fit out a shop or office in Box Hill, Ringwood or Nunawading, the conversation usually starts the same way: "we'll just use Wi-Fi." Sometimes that's right. More often, six months later we get the call — the EFTPOS terminal drops out at the counter, the phone calls crackle, the security camera feed freezes — and we end up pulling cable anyway, this time around furniture and stock.

Here's what I'd tell any small business owner before the fit-out starts, not after.

Wi-Fi is the last hop, not the backbone

Wi-Fi is excellent for phones, laptops and anything that moves. It's the wrong answer for anything fixed and important:

• EFTPOS terminals and POS systems — a dropped transaction at the counter costs you a sale and your patience.
• Desktop computers doing anything heavy — design files, accounting databases, medical imaging.
• Security cameras — Wi-Fi cameras are the first thing to stutter when the network is busy, and they're the thing you most need to work.
• Wi-Fi access points themselves. This is the one people miss: good Wi-Fi in a commercial space comes from ceiling-mounted access points, and those access points need a cable run to them anyway. Better Wi-Fi starts with better cabling.

The rule of thumb: if it doesn't move and it matters, give it a cable. Wi-Fi handles everything else.

What structured cabling actually means

A proper small-business cabling setup has three parts:

Outlets where you need them — a data point at each desk, behind the counter, at the printer, where the cameras mount, in the ceiling for access points. Think about where the business will be in five years, not just where the desks are today. A couple of spare outlets in a vacant corner cost almost nothing during a fit-out and a fortune afterwards.

A central cabinet with a patch panel, where every cable in the building terminates. This is the bit that separates a professional install from a tangle. Every run lands on a labelled port, and connecting any outlet to the switch is a five-second patch lead, not a crawl through the ceiling.

Cable run properly — supported along its route, kept clear of electrical cabling (the standards require separation between data and 230V circuits, and it's not bureaucratic fuss: mains cable induces noise into data runs), and never kinked or stretched around tight corners.

The result is a network you can actually manage. When something stops working, you know which cable goes where, and a fault is a ten-minute fix instead of a detective novel.

Cat6 or Cat6a?

Cat6 handles gigabit speeds comfortably over the distances found in any small shop or office, and for most businesses it's the sensible choice.

Cat6a is thicker, better shielded and supports 10-gigabit over full distances. Worth it if you're moving large files between machines all day (design, video, medical), if cable runs are long, or if you're cabling a building you expect to occupy for a decade or more — the labour is the same either way, so the cable grade is a small premium for a lot of headroom.

Whatever the grade, every run should be tested with a proper cable certifier after installation, not just "the link light came on." A certification report tells you each run actually meets the standard, and it's the document you want when a fault shows up later.

PoE: one cable, data and power

Power over Ethernet (PoE) is the quiet reason modern cabling earns its keep. A PoE switch pushes low-voltage DC power down the same data cable, which means:

• Security cameras mount anywhere a cable reaches — no power point needed at the camera.
• Ceiling Wi-Fi access points live where they work best, not where there's a GPO.
• VoIP desk phones run off the network and keep working through a power point shortage.

It also means one electrician-and-cabler visit instead of two trades — the camera or access point doesn't need its own 230V supply run.

Who's allowed to do the work

This one surprises people: in Australia, cabling that connects (or can connect) to the telecommunications network is regulated work. It must be done by a cabler registered with an ACMA-accredited registrar, working to the cabling installation rules — not just anyone handy with a punch-down tool. It's a separate registration from an electrical licence, and the two often come together on a fit-out: the electrician handles the 230V work, and the cabling is done (or supervised) under a cabling registration.

Ask your installer about their cabling registration the same way you'd ask an electrician for their licence. A registered cabler knows the separation requirements from electrical work under the Wiring Rules, labels everything, and leaves you with test results. An unregistered one leaves you with cable that "mostly works" and no comebacks.

Planning around the NBN

Your NBN connection lands wherever the carrier's equipment is — often a back wall or a comms cupboard that made sense to somebody in 1995. Part of any cabling job is deciding where the NBN service enters and how it reaches the cabinet. Sometimes that's as simple as a modem in the cabinet and a couple of patch leads; sometimes it means having the NTD relocated, which goes through NBN Co's processes and takes some lead time. Sort it during the fit-out, when the walls are open — not after the plasterer's been.

What an install looks like

For a typical small shop or office — say ten to twenty outlets, a wall cabinet, a camera or two and a ceiling access point — the work runs like this:

1. Walk-through and outlet plan. We mark every outlet, camera and access point location with you, including the spares for later.
2. Rough-in. Cables run while walls and ceilings are open, or surface-run in neat trunking if the fit-out is finished.
3. Fit-off. Outlets, patch panel, cabinet, switch and access points installed; every run labelled at both ends.
4. Testing. Every run certified, results handed over with the outlet schedule.

A job that size is usually one to two days at rough-in and a day at fit-off, staged around the other trades if it's a new fit-out.

The mistakes we get called to fix

Same handful, over and over. Cables draped over ceiling tiles and fluorescent fittings instead of supported on their own fixings. Data runs zip-tied to mains cable for forty metres, which is how you get a network that's mysteriously slow whenever the compressor kicks in. Outlets punched down by whoever was handy, so only seven of the eight wires are connected and gigabit negotiates itself down to a crawl. And no labels anywhere, so every fault means tracing cables by hand through a dusty ceiling.

None of it costs much to do properly the first time. All of it is miserable to fix later.

The short of it

Cable the things that don't move, run everything back to a labelled patch panel, use PoE for cameras and access points, and use a registered cabler. Do it while the walls are open and you'll never think about your network again — which is exactly how a network should be.

Fitting out or upgrading a premises in the eastern suburbs? Get in touch for an outlet plan and quote, or read about our data cabling and commercial data cabling work.