Kings III Emergency Communications, Communication, Coppell, TX
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Replace Your Telephone Lines the Right Way

Elevator Phone Line Replacement

A trend in the business 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 cellular 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, short for Voice Over Internet Protocol, uses the Internet as your regular phone service. Services that depend on managed strong internet connections to keep emergency phones live are 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.

Takeaway standouts:

POTS line replacement correlates with your phone services costs
  • Desire to eliminate dependency on analog lines and increasing desire for POTS phone replacement due to rising costs and the deteriorating networks associated with telephone lines (Report)

  • There has been a 27% price increase on POTS lines from 2005-2020 (Bureau of Labor Statistics)

  • Cellular costs have gone down 50% over the same time period (Bureau of Labor Statistics)

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 services simply aren’t dependable, these code requirements are in perfect harmony and efficiently managed with cellular LTE solutions.

What’s Your Phone Line Replacement Strategy?

“Now, there is little the FCC can do to protect consumers when companies decide to retire their copper infrastructure. When this happens it means that people who rely on copper lines to monitor their health, protect their schools and homes, and participate in society are not protected from a downgrade in quality of service in these essential communications.” – Source

The FCC order doesn’t draw a clear picture of when providers will decommission your analog lines, just that they have the permission to do so. Do you have a plan in place for when this happens?

Items You Should 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 a Phone That Has 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 so the issue can be managed. Unfortunately, not all systems are equipped to do this. 

Our Broad Skyline LTE 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 LTE 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.


Utilizing commercial strength equipment, our cellular solution was created with the sole purpose of meeting the unique needs that come with emergency communication.

Other available cellular solutions are designed for consumer/personal use but make their way into commercial spaces. While they may work for a typical call, they aren’t designed with emergency response in mind. When seconds count, it’s imperative to have the proper equipment for a reliable response.


As POTS replacement increases a lack of regulation regarding cellular communicators has led to the use of improper equipment in more specialized use cases. To meet elevator code, devices must include:

  • A 4-hour battery backup in case of a power outage
  • A communication alert triggering a phone line verification alarm system
  • Caller location identification without aid from the caller

The Kings III Cellular Solution exceeds these code requirements where other devices often lack the capability to comply with these ASME elevator code standards.


Kings III’s LTE cellular solution, currently deployed in over 75,000 customer emergency phones (and growing), now has an optional added benefit. The Kings III M90 cellular dialer is  FirstNet® Capable.

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 Landlines, Go Cellular Today

Now is the time to go cellular. We make it easy with our best-in-class emergency monitoring.

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Ditch the Lines: Some Commonly Asked Questions

  • What is the difference between POTS and VoIP?
    POTS service requires a fixed landline (i.e. a fax line) 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.
  • What does the POTS line stand for?
    POTS stands for Plain Old Telephone Service.
  • Can you still get a POTS line?
    Yes, you can still get a POTS line, but this is something you may want to replace. As a trend, most businesses are opting for phone line replacement, or POTS replacement.
  • What are POTS lines?
    POTS lines, or analog lines, service the Public Switched Telephone Network (PTSN) and allow users to make a call 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 reliable LTE cellular solution, managed and operated by a specialized company.
  • Do you offer Verizon POTS line replacement for emergency phones?
    Yes, we offer POTS line replacement options for all carriers, including Verizon.

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