Carriers are retiring the copper networks that carry traditional analog phone lines, known as POTS lines, and the lines that remain have often become more expensive and slower to repair. Replacing them is usually simple for ordinary phones and fax, but alarm panels, elevator emergency phones and other life-safety equipment have code requirements. Plan those with your alarm vendor, your elevator company and the local authority having jurisdiction before anything is disconnected.
POTS stands for "plain old telephone service": an analog line on a copper pair from the phone company's central office, with power supplied down the line itself, so it keeps working when the building loses power. That one feature is why so much safety equipment was designed around it, and it is why replacing it takes more thought than porting a number.
General information, not legal or code advice. Timelines, rules and code editions vary by carrier, state and jurisdiction, and they change.
Why this is happening now
The large local phone companies have spent years moving customers from copper onto fiber and wireless networks. FCC rule changes over the past decade have made it easier for them to stop offering some legacy copper services and to retire copper facilities after giving notice. In many areas carriers have announced or applied to discontinue copper-based services, and businesses that still have analog lines often receive notices, see price increases, or wait longer for repairs. The timing differs a great deal by carrier, state and area, and state regulators have a say in some places. Treat the dates in any notice you receive as the ones that matter, and assume the direction of travel is the same everywhere.
Find every line first
The hardest part is often knowing what you have. Plenty of businesses pay for analog lines nobody can identify. Before talking to anyone about replacements:
- Pull the phone bills and list every line number, including any billed on a separate account. Our guide to reading a telecom bill helps here.
- Walk the building with someone who knows it: telephone rooms, the fire alarm panel, the elevator machine room or controller, the security panel, the fax machine, card terminals, gate and door entry, and any modems on building systems.
- For each line, write down what it connects to, who maintains that equipment, and whether it is life-safety equipment.
- Call any number you cannot place and listen. A modem tone, a fax tone or silence each tells you something.
- Mark which lines serve equipment that must keep working during a power cut.
What usually depends on a POTS line
| Equipment | Why it used a POTS line | Common replacement paths | Who should sign off |
|---|---|---|---|
| Fire alarm panel | Reports alarms to a monitoring center and works in a power cut | Cellular or IP alarm communicators, often on two paths, or a listed replacement device | Alarm vendor, monitoring company, local fire authority |
| Elevator emergency phone | Two-way voice from the car to help, required by code | Cellular or IP elevator communication systems built for the purpose | Elevator company, elevator inspector or local authority |
| Security and burglar alarm | Reports to a monitoring center | Cellular or IP communicator | Alarm vendor, monitoring company, sometimes your insurer |
| Fax | Analog tones | Cloud fax, online fax, or a fax-capable adapter | You, plus any rules for regulated records |
| Card terminals and older point of sale | Dial-up authorization | Internet or cellular terminals | Payment processor |
| Main business lines | Calling | Hosted phones or SIP trunks, with numbers ported | You |
| Gates, door entry, emergency call boxes | Dialing out to a phone or a center | Cellular devices designed for the job | The equipment vendor; the local authority for some |
The replacement options
Hosted phones for ordinary calling
Your business numbers can move to a hosted phone system or SIP trunks; the steps are in porting business phone numbers. Plan for two things. First, 911 location information, covered in E911 rules for business phones. Second, what happens in a power or internet outage, since cloud phones depend on both. A backup connection, discussed in do you need backup internet, and battery power for the network equipment cover most of that.
POTS replacement devices
Several manufacturers make devices that plug into existing analog equipment and carry it over a cellular network, sometimes with a wired internet connection as a second path, and with a battery for power cuts. They are marketed specifically to replace copper lines for alarms, elevators, fax and similar equipment. Some are listed or certified for particular life-safety uses and some are not, so a product description alone is not enough. Ask the equipment vendor which devices they support, and confirm with the authority that inspects the equipment.
Purpose-built communicators
Fire and security alarm panels can often take a cellular or IP communicator that replaces the phone line entirely. Fire codes typically specify how many communication paths are needed, what kind, and how they are supervised, so the alarm vendor should specify what your panel and your jurisdiction require. Some older panels cannot accept modern communicators and need upgrading.
A plain adapter on your internet line
An analog telephone adapter on a VoIP service will run a fax machine or a simple phone. It is usually the wrong answer for life-safety equipment, because it depends on your internet connection and your building's power, and fax over ordinary VoIP can be unreliable without fax-specific settings.
Elevators and fire alarms need extra care
Elevator emergency phones are governed by the elevator safety code your jurisdiction has adopted, and newer editions add requirements beyond voice, such as ways to communicate with passengers who cannot hear or speak. Which edition applies, and what it requires, depends on where the building is. Fire alarm communication is governed by the fire code your jurisdiction adopted, with the fire marshal or equivalent acting as the authority having jurisdiction. In both cases the replacement should be specified by the company that maintains the equipment, may need a permit or inspection, and should be tested before the copper line is disconnected. Your vendors and inspectors make the call for your building.
Power, signal and supervision
A copper line carried its own power. Its replacement will not. Every device that must work in a power cut needs a battery or a connection to the building's emergency power, and someone needs to own the job of checking those batteries. Ask how long each device runs on battery, what it reports when the battery or the cellular signal is weak, and who receives that alert. Check signal strength where each device will sit: elevator machine rooms and basements are often poor spots for cellular coverage, and an external antenna may be needed.
A worked example
Hypothetical: the building and its lines are invented to show the method.
A four-story office building receives a notice that its copper lines will be discontinued. The bill shows nine analog lines. The walk-through finds four lines for the main phones and fax, two for the fire alarm panel, one for each of two elevators, and one nobody can identify. Called, the mystery line answers with a modem tone. It turns out to be an old boiler monitoring connection, replaced years ago and still being billed.
- The phones move to a hosted system and the numbers are ported. Fax moves to a cloud fax service.
- The fire alarm vendor installs a dual-path communicator listed for the panel, and the monitoring company and fire marshal's office confirm what inspection is needed.
- The elevator service company replaces the car phones with a system that meets the code edition the city enforces, with battery backup and an external antenna in the machine room.
- The mystery line is cancelled.
Each change is tested before its copper line is disconnected. The order matters: life safety first, disconnects last.
Timing the switch
Do not wait for the final disconnect date. Alarm and elevator vendors can have lead times for equipment and inspections, permits take time where they are needed, and number porting usually takes a few weeks on its own. A sensible sequence is:
- Inventory the lines and identify the owner of each piece of equipment.
- Get written recommendations from the alarm and elevator vendors, and ask the local authority what it needs to see.
- Order and install the life-safety replacements, then have them tested and inspected while the copper lines are still live.
- Move ordinary phones and fax, and port the numbers.
- Disconnect each copper line only after its replacement has been confirmed working, and check the next bill to make sure it has gone.
Keep a simple record of what replaced each line, who installed it and when it was tested. The next inspector, insurer or building buyer will ask.
Questions to ask
- Your carrier: which of our lines are affected, by when, and what are you offering in their place?
- Your alarm vendor: which communicators or devices does our panel support, and what does our jurisdiction require?
- Your elevator company: which code edition applies to our elevators, and what replacement meets it?
- The local authority: is a permit or inspection needed for the change?
- Every vendor: how long does the device run on battery, and how are failures reported?
Plan it with one agent
We price the telecom side of a copper retirement: hosted phones, number porting, internet and backup connections, and bundles through SMB services. For alarm and elevator equipment, we coordinate with your vendors rather than guess at what your code requires. Carriers pay FiberX, so there is no markup, the consultation is free, and you usually hear back the same day. Phil Morales is your one point of contact. Send us your line list, call 478-758-8091 or text (347) 870-0965.
