Lift Emergency Phone Compliance: 4G VoLTE Requirements

What lift emergency phones must do

Every passenger lift in Australia requires an emergency communication system under the AS 1735 series. The phone must auto-dial a 24/7 monitoring centre when a passenger presses the emergency button — no number to dial, no mobile phone needed, no action beyond pressing the button.

The core requirements have not changed. Two-way voice communication between the trapped passenger and a staffed monitoring centre. Auto-dial on activation. Battery backup so the system works during a power failure. What changed is the network: the copper PSTN lines that most lift phones relied on no longer exist, and 3G cellular — used as an early replacement in some buildings — has also been decommissioned. As of mid-2026, every lift emergency phone operates on 4G VoLTE cellular or landline SIP.

This is an ongoing compliance obligation. The PSTN transition is finished. The question for building owners and facility managers is whether the system remains compliant — connection active, monitoring current, testing documented.

How the system works

A compliant lift emergency phone system has three components working in sequence.

The in-car emergency phone sits inside the lift car, typically behind the operating panel or in a dedicated recess. Pressing the emergency call button triggers an auto-dial — the passenger does not need to do anything else.

The 4G VoLTE cellular module connects the phone to the mobile network. The module is usually installed in the lift controller cabinet at the top of the shaft or in the machine room, with a SIM card providing the cellular connection. Signal strength inside the shaft must be adequate — external antennas are sometimes required in buildings with poor reception.

The 24/7 monitoring centre receives the call. The centre must be staffed around the clock and able to identify the specific building and lift, communicate with the trapped passenger, and dispatch emergency services if needed. The monitoring arrangement is contractual — if the contract lapses, the phone is non-compliant even though the hardware still works.

For a broader view of how emergency phones fit within the Australian lift standards framework, including building compliance and disability access layers, see the full standards guide.

Who is responsible

The compliance obligation sits with the person conducting a business or undertaking (PCBU) — in practice, the building owner, strata managing body (owners corporation in NSW and Victoria; body corporate in Queensland), or facility manager acting on behalf of the owner.

The PCBU must ensure three things: the emergency phone hardware is installed and functional, the 4G VoLTE connection is active, and the monitoring contract is current. This obligation does not automatically transfer to the lift maintenance contractor. Unless the lift maintenance contract explicitly includes emergency phone monitoring as a scope item, the building owner retains responsibility.

Each lift in a building requires its own independent emergency phone and connection. A single monitoring contract can cover multiple lifts, but each phone must function independently.

What to verify — a practical checklist

Facility managers should verify these items monthly and document the results.

Press the emergency button in each lift. Confirm it connects to the monitoring centre. Verify two-way voice — speak and listen. Ask the operator to confirm your building address and lift number.

Check the 4G module. Locate the VoLTE unit in the controller cabinet. Confirm it is powered and showing a connected status. If it displays signal strength, note the reading. Report any fault indicators to your monitoring provider or lift service company.

Test the battery backup. During scheduled maintenance, simulate a power interruption and verify the emergency phone still connects. Battery backup must sustain the phone for at least one to three hours depending on the installation.

Verify your monitoring contract. Confirm it is current, paid, and the centre is staffed 24/7. A lapsed contract means the phone calls nothing — this is a common compliance gap in buildings where the monitoring provider changed and the new contract was never activated.

Keep records. Record each test — date, time, result, tester name. Under Australian lift standards, inspection records should be retained for at least five years.

Common compliance gaps

Three issues come up repeatedly during inspections and audits.

Lapsed monitoring contract. The most common gap. The original provider changed, a new contract was set up, but activation was never completed. The phone hardware works fine — it just has nowhere to call. Verify the monitoring centre actually answers when you press the button.

3G module still installed. Some buildings had their lift phones converted from PSTN to 3G during the early stages of the network transition. With 3G networks now decommissioned alongside the copper network, these modules no longer function. If your lift phone does not connect when tested, a 3G-to-4G module swap may be needed — a relatively straightforward job for a lift service technician.

No battery backup testing. The phone connects fine during normal operation, but has never been tested during a power failure. Battery backup is a compliance requirement, and batteries degrade over time. If the backup battery has not been tested or replaced within its rated lifecycle, the system may fail precisely when it is most needed — during a power outage that also traps passengers.

How this fits into routine maintenance

Emergency phone compliance is a standing item in any well-structured lift maintenance programme. Under a comprehensive maintenance contract, the service provider typically tests the emergency phone during each routine visit.

The testing obligation remains with the PCBU regardless. Even if the maintenance contractor tests the phone, the building owner must verify tests are happening and results are recorded. Review maintenance reports for emergency phone test entries.

During a lift modernisation project — replacing controllers, doors, or drive systems — the emergency phone system is usually upgraded as part of the scope. Modern controllers integrate the 4G VoLTE module directly. The monitoring arrangement must be confirmed before the modernised lift returns to service.

For buildings on non-comprehensive contracts (parts and callouts billed separately), emergency phone testing may not be included. The PCBU must arrange testing independently — through the monitoring provider or a separate service agreement.

If you need to verify your lift emergency phone system or upgrade to a compliant 4G VoLTE setup, get free quotes from qualified lift service providers who can assess your current installation.