Your Chicago Building Has Analog Lines Nobody Can Account For — and Some of Them Are Code

Most Chicago buildings are paying for analog phone lines nobody can identify. A fax line for a machine thrown out in 2015. A modem line for a system that was replaced twice. An alarm circuit that went cellular three vendors ago. And somewhere in that same list, usually, the elevator emergency phone and the fire alarm panel — which carry code obligations and an annual inspection.

That matters more this year than last, because the copper those lines run on is being retired, and when it goes the code requirement does not go with it.

I’m Robert Harney. I’ve been running phone systems for Chicago businesses since I started Open One Solutions in 2009, and a growing share of my week is now spent walking buildings and opening closets. I have never done a line audit for a building where the count was right. Not once. There is always something on that bill that nobody can explain, and there is often something critical that nobody knew was exposed.

Not sure what's on copper?Talk to a real engineer

Why is this landing on building owners now?

Carriers are retiring copper, and in March 2026 the FCC removed most of the procedural steps that used to slow that down. Carriers can now grandfather legacy voice service by notifying customers, discontinuance applications are granted automatically after thirty-one days if unopposed, and state rules that conflicted are preempted.

The practical effect for a building is simple and unforgiving: the window between a carrier deciding to retire your wire center and your lines going dark is now measured in months. You will get a notice. It may go to an accounts-payable address. It will not say “your elevator will fail its next inspection.”

Related: The Copper Sunset: Why POTS Lines Are Going Away

Start with the count, not the quote

Every vendor selling POTS replacement will quote you per line. Almost none of them will tell you how many lines you actually need.

On a building bill of eight analog lines, it is common to find two or three that can simply be shut off. At Chicago copper prices, that is real money before you have replaced anything. It is also the only way to know which of the remaining lines carry a code obligation and which are merely convenient.

So the order matters. Count first. Rank by risk. Then quote. A vendor who quotes before walking the building is quoting a number you gave them, not a number they found.

Which lines in your building are the problem?

Not the phones on desks. The lines that were never really phones.

The first two carry code obligations. The rest range from important to pure waste. Which is exactly why the inventory comes before the quote.

What does ASME A17.1 actually require for an elevator phone?

The code requires a means of two-way communication between the elevator cab and a location staffed to respond to emergencies. In practice that means four things:

• It dials out automatically. A passenger presses one button. No dialling, no instructions.
• Someone answers. The receiving location has to be staffed and able to respond — not a voicemail box, not an unmonitored extension.
• It is monitored, and the line verifies itself. The code expects automatic line verification — the system checks itself and reports, rather than everyone assuming it works between inspections.
• It has battery backup. The code specifies a duration; confirm the edition your jurisdiction enforces.

Inspectors test the emergency phone as part of the annual elevator inspection. A non-functional elevator phone is a failed inspection, and in many jurisdictions a failed inspection means the elevator comes out of service until it is corrected. For a residential building, that is a very short path to angry owners.

Codes are adopted locally. Confirm the edition your Authority Having Jurisdiction enforces before buying anything — the AHJ, not the vendor, decides what passes.

Does each elevator need its own phone line in Chicago?

Chicago requires every elevator to have its own dedicated phone line. Shared lines are not permitted. That single rule changes the economics of a building retrofit, because the consolidation savings available elsewhere in the building do not apply to your elevators — each cab needs its own path, full stop.

We are working through this right now with a Chicago manufacturer whose freight elevator — well over a hundred years old — failed its inspection because it had no dedicated phone line at all. The elevator company is installing, we are in final testing on the new emergency line, and once it passes the freight elevator goes back into service. Until then it does not run.

That is what a failed inspection actually looks like. Not a fine. A piece of equipment your business depends on, sitting idle until somebody fixes a phone line nobody had thought about in decades.

And what about the fire alarm panel?

NFPA 72 governs how a fire alarm panel communicates with its monitoring center, and the devices carrying that signal generally need to be listed for the purpose.

Here is the part that surprises people who have been doing this a long time: two copper lines have not satisfied NFPA 72 dual-path requirements for more than a decade. Redundancy under the current code means two genuinely different transport paths, not two of the same wire running to the same central office. If your building still has a pair of POTS lines feeding the fire panel and you believe that is your redundancy, it has not been for years.

What do most buildings get wrong about POTS replacement?

Somebody already sold this building a solution.

In our site surveys we regularly find well-intentioned facility managers who have a POTS replacement in place that does not meet federal, state, and local guidelines. Nobody set out to be non-compliant. They bought something described as POTS replacement, it produced a dial tone, the elevator phone rang through on the test call, and everyone moved on.

A device that makes a dial tone is not the same as a device that passes inspection. A generic VoIP adapter plugged into a fire panel or an elevator handset is the cheap answer and the wrong one.

Four questions that separate a real solution from a box

Ask those four of any vendor, including us. A provider who answers them quickly and specifically is telling you something useful about how they build.

Why does the local part matter more than the box?

There are good national products in this category, and several of them work well. What a national vendor cannot do is stand in your machine room, walk your building, or sit in the coordination calls with your elevator company while the retrofit happens.

Codes are adopted locally, and Chicago has requirements the national guides do not mention — the dedicated-line rule above being the obvious one. A device certified to a national standard is necessary. It is not sufficient.

What we do is the part that happens before and after the box. We walk the building and find the lines. We coordinate directly with the building owner or their representative and with the elevator company, who are the ones dealing with the inspector. And we supply the certification documentation for our equipment whenever it is asked for, rather than leaving you to chase it.

Four questions, one auditGet your building's real compliance status

What does a compliant replacement actually look like?

Our solution runs on a cellular connection, with the option to use the building’s existing internet service — coax or fiber — as an additional path. We provide battery backup on the cellular connection, and we typically deploy 8 or 16 hours of backup against a code minimum of four. Where a building needs longer, we add battery storage.

The whole system is proactively monitored. If the battery backup is not performing correctly, it sends us an alarm code and we investigate. That matters more in a building than anywhere else — the alternative is discovering the problem during an inspection, or during an emergency.

Your existing hardware stays where it is. The elevator handset, the fire panel, the callbox — none of it changes. Only the path changes. We deploy TelCloud equipment, which has well over ten thousand installations in the field and was built by founders who came out of the fire alarm industry. In most cases it works with your existing fire alarm panel, provided that panel itself meets current local codes.

The certifications, since somebody will ask

The equipment is UL Listed, conforms to ASME A17.1, and is permitted under NFPA 72. It is approved for fire and life-safety applications including elevators and alarm systems, and it has been tested and accepted by the major fire and burglar panel manufacturers. It is also HIPAA and PCI compliant, and FCC certified.

For whatever it is worth as a signal: the same equipment is approved by the New York City Fire Department and the California State Fire Marshal, two of the least forgiving authorities in the country. We can provide the certification documentation on request.

Who is responsible — the owner, the management company, or the tenant?

This is the question that causes the most delay, and I am not going to pretend it has one answer. It depends on your management agreement, your leases, and in a condo on your declaration.

One thing we can settle immediately: we coordinate the work. We deal with the building owner or their representative and directly with the elevator company, so the vendor scheduling that property managers dread is not left with you.

What I can tell you is how it usually plays out. The code obligation attaches to the building. An inspector does not much care which entity pays the phone bill — they care whether the emergency phone works. So the practical sequence is:

• Find out what exists before deciding who pays for it. The inventory is cheap and it ends most of the argument.
• Check the management agreement for who is responsible for life-safety systems and code compliance.
• Check the leases if any of the lines serve tenant spaces.
• Get it on a board or ownership agenda early. A planned capital item is a different conversation from an emergency assessment after a failed inspection.

The buildings that handle this well are the ones that started before the notice arrived.

What does it cost?

A certified POTS replacement line that meets the mandatory guidelines typically runs $50 to $75 per line per month, plus the associated taxes and fees. Compare that against copper, which is now routinely billed at $150 to $1,200 a month per line — I have seen individual lines as high as $1,800, plus taxes and fees.

There is a one-time deployment charge based on what the audit finds. Typical deployment runs $499 to $999, more if specialized cabling is required. After the audit you get exact numbers rather than a range.

What one Chicago condo association saved

A Chicago condo association was paying over $1,200 a month for POTS service. We came in with a deployment charge of $995 and ongoing charges of about $395 a month — a saving of over $800 a month, more than $9,600 a year.

The savings were the smaller part of the win. The bigger one: proactive monitoring, plus a complete log of all communications with the fire panel. That log is exactly the documentation you want in hand when an inspector asks how you know the panel has been reporting.

What to do before your next inspection

1. Pull a full phone bill and list every analog line the building pays for.
2. Walk the building with that list. Closets, roof, garage, elevator machine room, fire panel. Expect to find lines nobody can account for.
3. Rank by risk. Elevator and fire first. Everything else after.
4. Cancel what nobody uses. Immediate savings, zero risk, and it usually pays for a chunk of the replacement.
5. Confirm your AHJ and code edition before purchasing anything.
6. Migrate the life-safety lines, with certified equipment and the compliance documentation supplied as part of the job rather than chased afterward.

That sequence takes a couple of hours of someone’s time. Done before a carrier notice arrives, it is a planned project. Done after, it is a scramble against an inspection date you do not control.

What to do next

We perform a complete on-site building audit — every analog line, what is on the end of it, and what code requires of it. The charge is typically $199, and we apply it toward the deployment if you move forward with our recommendations.

Either way you end up with a written report covering what is required for genuine compliance and what needs completing from a facilities perspective. Plenty of buildings have used that report simply to cancel lines they were not using and to have something to show their board.

Frequently asked questions