Replace Your Telephone Lines the Right Way

Elevator Phone Line Replacement

A trend in the communications space is the elimination of analog lines, or plain old telephone service (POTS), as rising costs and deteriorating networks have increased the desire to eliminate dependency on analog lines. The Bureau of Labor Statistics shows a 27% price increase on POTS lines from 2005 to 2020 while wireless costs have gone down 50% over the same time period.

The cost-efficiency of going with VoIP makes sense for buildings nationwide but carries serious risks for emergency phones. VoIP is short for Voice Over Internet Protocol, or, in other words, using the Internet as your regular phone service. Dependence on strong internet connections to keep emergency phones live is unreliable. Customers risk losing communications during power outages or internet disruptions – two common scenarios. Additionally, placing emergency phones on VoIP networks in publicly accessible locations like elevators opens the door to a building’s network.

The solution? Industries that are required by code to have reliable communication systems can turn to cellular-based solutions to achieve POTS replacement. Why is that? While other internet-based solutions simply aren’t dependable, these code requirements are in perfect harmony with cellular LTE solutions.

More about the basics of VoIP vs. landlines and other phone line information >>

Ditch the Landlines, Go Cellular Today

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What to Consider When Switching Your Emergency Phones to Cellular

Using emergency phone without landlines

However, all cellular emergency phone solutions are not created equal. There is more to it than replacing those lines. Those concerned with an efficient response to emergency phone calls using cellular phones, need to be aware that the lack of regulation regarding cellular communicators within the elevator industry has led to low quality, non-code compliant devices. Two specific areas where this comes into play are battery backup and phone line verification. ASME code dictates the elevator phone provide a “means of communication for at least four hours”. The confusion comes when that four hours of talk time is translated into standby time. The difference could have significant impact if you are trapped in an elevator and this is your only means of communication.

You Can’t Contact Help With Inoperable Connections

The other issue is phone line verification. ASME also outlines specifically how the elevator cab must be able to verify the operability of the phone line. Ideally (and to meet code), when the phone line connected to your elevator is down, your phone line verification system (PLV) should send a visual and audible signal to notify whoever is onsite. Unfortunately, not all systems are equipped to do this. 

Our Skyline Cellular Solution: The Best Choice for POTS Line Replacement

When seeking out POTS replacement, you need a solution specifically designed for emergency use if you want a reliable response for any emergency call placed from your emergency device. Enter Kings III’s Skyline Cellular Solution. 

Skyline completely eliminates dependency on POTS lines by leveraging the mobile network. For elevators, our solution uses a traditional ADA-compliant hands-free phone in each elevator cab. The cellular transceiver is located outside of the concrete & steel-lined shaft.


Kings III’s cellular solution utilizes commercial strength equipment, created with the sole purpose of meeting the unique needs that come with emergency communication.

In a rush to meet customers’ needs, many other available cellular solutions are designed for personal, residential use but oftentimes make their way into commercial spaces as properties seek additional ways to save money. While they may work, they aren’t always designed with cellular emergency response in mind, creating a less reliable experience.


There’s been a lack of regulation regarding cellular communicators that has led to non-code compliant devices. Our cellular devices:

  • Have over 4-hour battery backup
  • Can trigger phone line verification via a line verification alarm system
  • Support multiple phones on one line while remaining code compliant

Many other solutions don’t have the capabilities mentioned above and therefore cannot comply to ASME standards.


Kings III’s cellular solution that more than 25,000 current customers know and trust for their emergency communications now has an optional added benefit. The Kings III M90 cellular dialer is currently the sole FirstNet Ready® emergency phone. FirstNet is the only nationwide communications network built with and for first responders, enhancing reliability and security when disaster strikes. FirstNet embedded solutions go through extensive review, and approved devices meet the highest standards for reliability, security, and performance.

FirstNet and the FirstNet logo are registered trademarks of the First Responder Network Authority. All other marks are the property of their respective owners.

Ditch the Lines: Some Commonly Asked Questions About Phone Line Replacement

What is the difference between POTS and VoIP?

POTS service requires a fixed landline to make phone calls and voice is converted into an electrical signal, whereas VoIP (Voice Over Internet Protocol) requires the Internet as a transmission medium to make calls, and voice is converted into a digital signal.

Can you still get a POTS line?

Yes, you can still get a POTS line, but as a trend, most businesses are opting for phone line replacement.

What does the POTS line stand for?

POTS stands for Plain Old Telephone Service.

What are POTS lines?

POTS lines, or analog lines, service the Public Switched Telephone Network (PTSN) by making a connection through copper wiring by transmitting voice signals into electronic signals or pulses. It has been the standard system across the globe since the 1880s. Think poles strung with wires. Profits from POTS lines have been steadily declining and with new technologies, it doesn’t make sense to invest more money in what is becoming an outdated system – we certainly cannot blame the telecommunication giants for their logic here.

Should I have my elevator POTS lines replaced?

While your emergency phones can function on analog lines, we recommend you replace these phone lines with a less outdated and less costly solution.

Eliminate dependency on costly elevator lines with our all-inclusive cellular solution.