A business fiber install usually takes more than one visit: a site survey to plan the route, sometimes cabling work to extend the demarc to your suite, and then the install itself, where a technician mounts the carrier's equipment, connects the fiber, tests with the carrier's network operations center and hands you a working port. When an install fails, it is far more often because of access, power or a missing cable run than because of the fiber.
How long the whole process takes is a separate question, and our guide to fiber installation timelines covers it. This article is about the visits themselves: who comes, what they do, what they need from you, and what you should have in hand when they leave.
The visits, in order
| Visit | Who comes | What happens | What you provide |
|---|---|---|---|
| Site survey | Carrier engineer or contractor | Plans the route from the street to your suite and checks space and power | Building access, a contact who knows the telecom room |
| Construction or riser work (if needed) | Carrier construction crew | Brings fiber into the building or up the riser | Landlord approvals, permits handled by the carrier |
| Demarc extension (if needed) | Carrier, building contractor or your cabling vendor | Runs cable from the main telecom room to your suite | Agreement on who does it and who pays |
| Install and turn-up | Carrier field technician, with the carrier's NOC on the phone | Mounts equipment, connects fiber, tests, hands off the port | Access, space, power, someone for your side of the network |
| Your cutover | Your IT person or managed provider | Connects the firewall and moves traffic onto the new circuit | The IP details and a planned window |
In a building where the carrier is already lit and the cabling to your suite exists, several of these collapse into one visit. In a building that needs construction, each can be a separate appointment weeks apart.
The site survey
The survey is where most install problems are found, which is exactly why it exists. The surveyor typically looks at:
- How fiber enters the building, and whether the carrier already has a presence in the main telecom room.
- The route from there to your floor: the riser, any conduit, and whether there is room for another cable.
- Where the carrier's equipment will live in your suite, and whether there is wall or rack space, power and some ventilation.
- The distance from the handoff point to your own equipment, which decides what kind of cable the last stretch needs.
- Any building rules: approved contractors, work hours, escorts and insurance paperwork.
Ask for the survey findings in writing, including anything the carrier expects you or the landlord to do before install. A survey note that says "customer to provide demarc extension" is easy to miss and is one of the commonest reasons an install date slips. Our article on the demarc and inside wiring explains what that line means.
Getting ready: the week before
- Confirm the appointment date and window, and the name of the person meeting the technician.
- Tell building management and security, and send any certificate of insurance the building requires for contractors.
- Make sure the technician can reach the main telecom room and your equipment location, including keys and any escort.
- Check there is a free power outlet where the carrier's equipment will go, ideally on a battery backup.
- Clear a space on the wall or in the rack the surveyor identified.
- Get the IP details the carrier has issued to whoever configures your firewall.
- Confirm the handoff type, copper or fiber, and that your firewall or switch has a matching port and, for fiber, the right optic.
On the day
Check-in and access
The technician usually checks in with building security or management first, then goes to the main telecom room. If nobody can open it, the day can end there. Many buildings only allow contractors at certain hours or with an escort, so this is worth confirming the day before rather than discovering at 8am.
Fiber to the demarc
In a lit building, the technician connects the carrier's fiber in the main telecom room and patches it toward your suite, either over an existing cable run or one installed earlier. If the carrier's equipment goes in the telecom room rather than your suite, the handoff to you happens there and a demarc extension carries it up to your floor.
Mounting the equipment
The carrier installs its device at the demarc. Depending on the product, that might be a network interface device for a dedicated circuit, an optical network terminal for shared fiber, a cable modem for coax, or a carrier-managed router. It needs power, and it is labelled with the circuit ID. Leave it where the technician mounts it, and do not plug it into a power strip someone is likely to switch off.
Turn-up and testing
With the equipment connected, the technician works with the carrier's network operations center to bring the circuit up. That usually involves checking light levels on the fiber, confirming the circuit is visible from the carrier's network, and running tests. On Ethernet circuits, many carriers run a structured performance test, such as one based on RFC 2544 or Y.1564, that checks throughput, delay and loss at the ordered speed. Ask for the results. They are useful evidence if you ever need to prove the circuit has degraded.
The handoff to your side
The technician's job generally ends at the carrier's port. They will confirm it passes traffic, often by plugging in a laptop or connecting to your firewall and checking that it can reach the internet with the issued IP details. They will not usually configure your firewall, your Wi-Fi or your phones. That is your IT person's work, which is why it helps to have them present or on call.
Shared fiber, coax and wireless installs
Not every install looks like the one above. Shared fiber and coax installs are often a single visit to connect an existing line and set up a modem or terminal, and some are partly self-install. Fixed wireless installs involve roof work: mounting an antenna, aligning it with the provider's site and running cable down to your suite, which needs roof access and landlord approval. Either way, the same basics apply: access, power, a contact on site and the IP details ready for your side.
A worked example
A hypothetical install day, with invented times, to show the sequence.
- 8:00 Technician arrives, checks in with security, and is escorted to the basement telecom room.
- 8:20 Fiber is patched from the carrier's panel to the riser cable installed the previous week.
- 9:00 On the 9th floor, the technician mounts the carrier's device in the office comms cabinet and powers it from the battery backup.
- 9:30 Light levels checked; the NOC confirms it can see the device.
- 10:00 Performance test runs at the ordered 500 Mbps; results are emailed to the office manager.
- 10:45 The office's IT provider connects a spare firewall port and confirms internet access on the new IP block.
- 11:15 Technician leaves with the circuit marked as delivered. The office keeps its old circuit live and plans the full cutover for Friday evening.
The work was done in three hours because the riser run and the power were sorted out a week earlier. Without the riser run, this would have been a failed visit and a new appointment.
Before the technician leaves
Collect these while someone who knows the answers is still on site:
- The circuit ID, written on the equipment and in your own records.
- The carrier's repair number and how to open a ticket.
- The IP block, gateway and any DNS details, confirmed working.
- Which port on the carrier's device is the handoff, and a photo of the cabling.
- The turn-up test results, if the carrier ran them.
- A note of the date and time the circuit was marked delivered, because billing usually starts then.
Then run your own wired tests before moving anything important onto the line. Our guide to testing business internet speed shows how. For moving services across without an outage, see how to switch business internet providers without downtime.
If the install does not finish
Sometimes the visit ends without a working circuit: the room was locked, the cable run was not there, the equipment had nowhere to go, or a fault turned up on the carrier's side. Get the technician to tell you, and write down, exactly what blocked the work and what has to happen before the next visit. Ask the carrier for the new date in writing. Some contracts allow a charge for a visit that fails because the customer site was not ready, so ask about it before the day rather than after.
Questions to ask your provider
- Will there be a site survey, and can I have the findings in writing?
- Who is responsible for the cabling from the main telecom room to my suite?
- What equipment will you install, how much space and power does it need, and where will it go?
- What is the handoff: copper or fiber, and what speed and connector?
- Will the technician run a performance test, and can I have the results?
- When does billing start, and what counts as the circuit being delivered?
- What happens, and what does it cost, if the visit cannot be completed?
Let someone else chase the details
Most install days go well when the survey findings, the landlord, the cabling and your IT person are lined up beforehand. Coordinating that is part of what we do: Phil Morales follows the order from quote to turn-up and stays on the account afterwards. Several carriers bid on your address, the carrier pays us, so there is no markup, and the quote is free with no obligation. Read about dedicated internet access, send us your address, call 478-758-8091 or text (347) 870-0965.
