Digital upgrades for your existing lift communications without costly replacements

Replace PSTN lines with non-disruptive, compliant digital upgrades for existing lift phone systems in under 1 hour. Avoid costly breakdowns with real-time monitoring and notifications from your lifts ensuring maximum uptime and public safety.

Tabs Bar

Obtain compliance in under 1 hour

ControlFreq rapid-retrofit upgrades suit new and existing lift auto-diallers. Replace existing analogue PSTN lines with digital 4G-VoLTE communications in literally minutes, ensuring full compliance with BS EN 81-28:2022 (Feb 2025 update). LANDLINE-4G offers an instant replacement of your PSTN phone lines. Complete with inbuilt remote monitoring of mains power, battery and live fault status brings any lift up to current compliance standards. The upgrade is non-disruptive, requiring no replacement of existing auto-dialler parts or wiring, meaning lifts stay operational throughout the simple upgrade process.

Always-on mobile connectivity with inbuilt multi‑network resilience

Reliability built-in with multi-network IoT mobile network technology. If the mobile network connected drops, the system automatically scans for and connects to the next best keeping emergency communication live when it matters most. With full online event logging and instant maintenance team notifications, never miss a beat with ControlFreq digital lift communications. Crystal-clear 4G-VoLTE voice quality and global visibility mean every lift in your portfolio is connected and safe.

Service you can trust — cloud monitored mains & battery backup

ControlFreq delivers realtime monitoring of the power source to every lift. Upgrade to uninterrupted performance with 4.5 hours hours of battery backup and over one hour of talk-time, standard. In the event of a power disruption, automated mains fail & restore alerts are sent, while the battery backup is monitored in real time via WebAlarm™.

Rapid retrofit, not costly replacement

The ControlFreq digital upgrade solution is compatible with all new and existing lift phone systems, eliminating the need for major hardware changes or costly replacements. The digital upgrade hardware is supplied pre-configured in a plug&play format to allow easy installation by your existing lift maintenance team. Our support team is always on hand to remotly test and support on-site teams with whatever they need. Upgrade installations typically take less than 1 hour, allowing engineers to complete upgrades quickly across multiple sites with zero disruption.

Real-time visibility with WebAlarm™

ControlFreq devices connect real-time data & analytics to WebAlarm™, giving on-site maintenance, lift engineers and building management teams complete visibility of lift status, power and connectivity, across their entire portfolio. Real-time voice, SMS, push or email notifications speed up resolution and cloud dashboards simplify compliance. ControlFreq offer 7-day technical support to ensure remote assistance is always available when it really counts.

70% of building managers don’t realise they are legally responsible if lift emergency phones fail after the PSTN switch-off.

94% of passengers trapped in a lift say the working emergency phone is their only reassurance of safety.

Up to £5,000 fines per lift can be issued for non-compliance with BS EN81-28:2022.

Emergency lift phone solutions built for compliance and reliability

With PSTN phone lines on the way out, upgrading to a digital alternative is essential to remain compliant with BS EN81-28:2022. ControlFreq provides future-ready solutions that combine reliable 4G connectivity, monitored backup, and cloud reporting to keep emergency lift phone connectivity completely visible and operational at all times.

build

Plug & Play Installation

Pre-configured hardware for easy installation and remote support by ControlFreq engineers.

battery_full

Monitored Battery Backup

Cloud monitored battery back up for over 4 hours without mains ensuring lift phones stay connected.

verified

Meet BS EN81-28:2022 Compliance

Meet the latest lift alarm standards with monitored backup, logged test calls, and compliance reporting.

computer

Real-time Monitoring

Monitors mains power, battery, emergency calls, and faults with instant notifications to stakeholders.

schedule

1 Hour Talk-Time

Provides 1 hour talk-time on battery when mains power is unavailable.

cloud

Cloud Visibility & Logging

Logs real-time alarm events, lift faults and test calls with WebAlarm Cloud – complete event history.

support_agent

7-Day Tech Support

UK-based technical support available seven days a week for installers and operators.

cell_tower

Multi-Network Connectivity

Automatic carrier failover with a UK multi-network IoT SIM for maximum uptime.

signal_cellular_alt

4G-VoLTE Digital Audio Technology

Crystal clear digital audio for effective, reliable emergency communications with any call centre

+
Installed in a lift motor control room
+
Installed in a control cabinet in an MRL environment
+
Our LANDLINE-4G digital audio communicator replaces a BT landline for monitored communications

The Landline Replacement 4G-VoLTE Digital Audio Communicator

Upgrade any new or existing lift phone auto-dialler with a universally-compatible 4G-VoLTE voice call communicator. LANDLINE-4G provides a seamless replacement for traditional BT phone lines in emergency lift phone installations without the need to replace the existing auto-dialler. Paired with WebAlarm cloud monitoring ensures full compliance with current lift safety standards BS EN81-28:2022.

Built-in multi-network redundancy.

Book a demo Explore hardware

Universal compatibility with all lift phone manufacturers simplifies the upgrade

LANDLINE-4G, put quite simply, replaces the BT landline. Out of the box it provides an instant communication path for any equipment plugged into a PSTN phone socket. If your lift alarm is connected to a landline socket now is the time to upgrade to a 4G-VoLTE digital solution to remain compliant. dd the benefits of real-time monitoring that traditional analouge phone systems do not provide.

  • Avire Memcom

    Avire Memcom

    Telephones installed in elevators for emergency communication, used to call maintenance or emergency services on breakdowns or entrapments.

  • Safeline

    Safeline

    Alarms for fire detection, intruder alerts, and other security monitoring systems that use PSTN to transmit signals to monitoring centers.

  • Windcrest

    Windcrest

    Systems used for access control in residential and commercial buildings, allowing communication between entrances and occupants.

WebAlarm™ | Real-time Cloud Monitoring, Communication & Control for Lift Phones

WebAlarm™ is our proprietary ‘OEM white-label’ cloud-based platform that adds real-time monitoring, communication and global visibility to your lift phone systems with virtually no effort whatsoever. It provides monitored battery back up to ensure lift safety compliance and provides realtime insight into an estate of any size.

Emergency Lift phones
Mains power
Battery back up
Mobile network connectivity
Lift faults
Event logging
BS EN81-28:2022 compliance

Instant alerts

Receive immediate notifications via voice call, email, SMS, or push alerts whenever an issue occurs, ensuring rapid response maintenance teams before critical failures escalate for maximised operational continuity.

Real-time visbility

Monitor your lifts effortlessly with a real-time overview from a central online dashboard. Gain full visibility and control to maintain operational reliability, optimise performance and compliance at all times.

Upgrade your lifts to digital communications – speak to an expert today.

Send us a message to arrange a call with a digital communications speacialist and take the hassle out of upgrading your estate with our full solution and support.

Frequently asked questions

  • The Public Switched Telephone Network (PSTN) is being phased out in the UK. Older lift emergency phones that rely on analogue PSTN lines will stop functioning. To avoid service interruption, these systems must be upgraded to a digital alternative, such as GSM ie: ControlFreq LANDLINE-4G or IP-based communication. Non-compliant lift phone systems may result in the lift being taken out of service.

  • To comply with EN81-28:2022, an emergency lift communication system must include:

    • Two-way voice communication between the lift car and a rescue service.

    • Remote dial-in communication for the monitoring service to dial back into the lift if cut off

    • Physical testing of the lift alarm every 3 days, using a method equivalent to a user raising a genuine emergency call alarm

    • Monitored battery backup for both the autodialler and, if used, the GSM gateway with 1 hour standby and 15 mins talk time.

    • Automated alarm transmission with confirmation from the rescue service, with no user input required once an alarm is triggered.

    • Automatic identification of the lift’s location and ID to the rescue service.

    • Visual and audible indicators inside the lift car, including green and yellow pictograms and an adjustable tone to indicate call progress and status.

  • Upgrading to a ControlFreq LANDLINE-4G ensures compliance with the BS EN81-28:2022 standard. Upgrading to a GSM gateway that does not meet the standard would not the issue of PSTN shutdown. The upgraded system must also meet the standard’s requirements for monitored battery backup, 15-min talk time on battery, self-testing, alarm verification, and passenger indicators. A GSM upgrade must be part of a wider compliance strategy.

  • Yes. The LANDLINE-4G meets and exceeds the requirments with 8 hours standby and 1 hour talk time on battery back up. All other GSM gateway requirements are also met or exceeded.

  • The building or lift owner is ultimately responsible for ensuring that lift communication systems are compliant with BS EN81-28:2022. LANDLINE-4G ensures saftey compliance by meeting all the requirements of the standard. Installation is a simple plug&play process without the need to replace existing lift auto-dialler hardware. By fitting the LANDLINE-4G, compliance is met. Simply power the device locally to the lift auto-dialler and connect the BT connection to the LANDLINE-4G. Job done!

  • Since February 2025 the lift alarm safety standard BS EN81-28:2022, states the system must be tested every 3 days using the same method as. areal alarm call to simulate a real world scenario.

  • Yes. We offer digital upgrades which replace legacy PSTN lines that allows you to leave existing lift phone equipment in place and simply upgrade the communication path from analogue to digital. We offer a managed service including an initial consultation, detailed proposal, pilot trial and measured results prior to a controlled phased rollout.

  • Yes. Pilot trials are offered to prove functionality and suitability for the application before committing to a phased rollout.