Elevator Communication Modernization: An Industry Guide to POTS Replacement

Communication is the elevator’s lifeline

The elevator industry operates where technology, infrastructure, and safety meet. Timely, effective communication systems are the lifeline of every elevator — the vital connection between passengers, building operators, and emergency services. When someone presses the help button in a stalled car, everything downstream of that button has to work: the phone, the line, the connection to a monitoring center, and the ability of an authorized person to respond.

What’s often overlooked is that a modern elevator’s line does more than carry a voice call:

• Two-way emergency voice — the passenger-to-responder conversation that code requires.
• Ringdown / auto-dial — the line automatically connects to the monitoring center when the help button is pressed.
• Modem data — many elevators use the line for remote diagnostics and controller telemetry, letting service companies monitor equipment health and dispatch efficiently.

Any replacement for the copper line has to support all three, or it isn’t really a like-for-like solution.

The challenge: copper is failing the elevator industry

The elevator industry is enduring escalating expenses, limited accessibility, inadequate support, and constantly changing regulations tied to traditional PSTN/POTS lines. As carriers retire copper:

• Recurring line costs climb, multiplied across every elevator in a portfolio.
• Support and repair windows lengthen as copper is deprioritized.
• Compliance obligations continue to evolve — most notably the two-way and accessibility requirements introduced in ASME A17.1-2019.

For a property manager with dozens of elevators, or an elevator service company maintaining thousands across many buildings, this is a structural cost and risk problem — not a one-off repair.

What elevator code requires

Under ASME A17.1/CSA B44, an elevator’s emergency communication system must provide monitored, two-way communication to authorized personnel, automatic daily line verification (a self-check without placing a test call), and backup power. The 2019 edition expanded requirements to include visual/text communication for passengers who are deaf, hard of hearing, or speech-impaired, and video communication for elevators with a rise of 60 feet or more.

Crucially, the code permits communication means other than a telephone line — including cellular — as long as the replacement meets those functional requirements. That’s what makes a purpose-built cellular appliance a compliant path off copper.

For the deep-dive on compliance specifics and a real deployment, see our companion posts:

• Elevator Emergency Phones After Copper: Staying Compliant — the code requirements in detail.
• Keeping Elevator Emergency Phones Online After Copper — connectivity and continuity.
• Elevator Emergency Communication: The POTS IN A BOX® Solution — a commercial real estate case study.

The solution: POTS IN A BOX® for the full elevator line

DataRemote’s POTS IN A BOX® is an IP and cellular appliance that seamlessly substitutes traditional PSTN POTS lines and supports all the communication an elevator needs — modem data, ring-down, and voice — ensuring emergency calls and diagnostics transmit with efficiency and reliability.

Because it presents the same analog interface the elevator phone and controller already expect, it’s a drop-in replacement: no new car station, no re-permitting, and no disruption to the diagnostics the elevator company relies on.

Why it fits the elevator industry

Capability	Building owner benefit	Elevator OEM / service company benefit
Voice + ringdown + modem data	One line replacement covers every elevator communication need	Diagnostics and telemetry keep flowing, no separate data path
Up to 48-hour battery + UPS	Exceeds code backup-power minimums	Fewer outage-driven service calls
Automatic line verification	Meets daily self-check requirement	Confidence the monitored path is healthy
Remote monitoring & alerts	Portfolio-wide visibility	Proactive dispatch; near-real-time loss-of-comms notifications
Drop-in analog interface	No re-permitting or car-station swap	Faster, lower-disruption installs

The 90X1 (5G) and 90X2 (LTE) are the typical choices, with centralized fleet visibility through Ara — including notifications by local alert, API, email, and text if communication to an elevator is lost.

Benefits

• Nationwide coverage over cellular/IP where service is available.
• Cost savings versus escalating legacy POTS charges, multiplied across a portfolio.
• Cellular and battery backup for outage resilience.
• Network visibility, control, management, and reporting through Ara.

Regulatory considerations

• UL-62368-1 & UL-60950-1 equipment safety standards.
• ASME compliance for elevator emergency communication.
• Carrier and regulatory approvals: AT&T, Verizon, T-Mobile, FCC, PTCRB.
• E-911 verification support.
• Loss-of-communication notifications by local alert, API, email, and text.

See the DataRemote Trust Center for the current, authoritative certification list.

Rolling it out across a portfolio

1. Inventory every elevator line and note whether it carries voice only, or voice plus modem data.
2. Confirm the rise of each elevator to identify where 2019 video requirements apply.
3. Coordinate with the AHJ and your elevator service provider on the replacement plan.
4. Deploy the appliance behind the demarc, preserving the existing car station and diagnostics.
5. Centralize monitoring in Ara so any loss of communication triggers an immediate alert.

Modernize elevator communication with confidence

DataRemote’s POTS IN A BOX® provides reliable communication pathways for elevator voice, ringdown, and diagnostics — ensuring safety and regulatory compliance while retiring the costly copper beneath them. It’s a win for building owners and elevator companies alike.

For campus and public-safety emergency phones — red phones, blue-light stations, and ringdown circuits — see our companion guide on elevating safety standards for emergency communication lines.

To brief your team, download the elevator communication flyer (PDF), or contact us to plan a portfolio-wide rollout.