nbn migration - how does it affect carpark emergency phones?

As a result of the national nbn rollout – emergency telephony services operating on carpark ticketing machines will need to be upgraded as they will lose connection during power outages and network interruptions. 

The nbn (National Broadband Network) is replacing the vast majority of existing fixed phone and internet networks throughout Australia. This migration will affect a parking ticket machine’s emergency phone making it inoperable during an nbn outage, either caused by a power failure or a network issue. The nbn™ does not guarantee 100% up-time of their network.  

The emergency telephone line is an essential feature of your carpark ticketing system, enabling motorists to call for help in the event of an emergency or notify of any malfunctions with your bollard and boom gate operation. If your emergency phone is not operational 24/7, it is likely your carpark will not comply with statutory regulation. 

Emergency telecommunication systems operating over the nbn network must be connected to a secondary communications technology – such as a mobile network connection with a battery backup included. Your emergency phone must automatically operate during a power outage affecting the nbn.

FTTP (Fibre to the Premise), FTTN (Fibre to the Node) & HFC (Hybrid-Fibre Coaxial) connections will NOT work in the event of a power failure. Premises with these connection types must upgrade their emergency telephone technology.

If you have FTTP (Fibre to the Premise) with a battery backup, you may still be out of compliance unless your emergency phone line is being actively monitored.

To register your emergency telephone lines with the nbn, click here. Alternatively, you can check when nbn will be ‘ready for service’ in your area.

The DET (Duress & Emergency Telephone) service provides a cellular, battery powered backup for your emergency telephony during an nbn outage.

Using dual SIM connectivity, the DET unit emulates the reliability of your traditional copper connection. The DET unit comes standard with twelve hours of battery backup, powering the unit in the event of a network outage.


  • Each unit replaces up to four PSTN lines
  • Option to attach other critical lines requiring redundancy (such as security lines, freezer alarms, gas lines, etc.)
  • Unique facility enabling the call centre to identify which one of up to four emergency lines is calling & dial out to those lines
  • Remote, proactive monitoring of critical functions (signal strength, battery voltage, fault line, etc.)
  • Periodic heartbeat to monitoring centre to confirm system health and functionality
  • Comprehensive maintenance service
  • Remote configuration of all settings & updating of hardware’s software
  • On board storage of custom voice messages

Your emergency telephony services need to be updated now to ensure compliance

Our DET service delivered by VoIP and Telstra is the worry-free solution to ensure 100% up-time for your emergency services. Ask us for a service scope today!


Download the DET fact sheet below!


Download the DET hardware sheet below!