Prior to NBN, a PSTN (Public Switched Telephone Network) phone line had a measurable voltage coming down the line from the local Telephone Exchange.
If we used a Multimeter to do so , we would see the following
With the changeover to NBN these voltages either no longer exist or the initial voltage is low due to coming via Electronic Switching equipment, not the Telephone exchange line.
For the Solution 6000 we have a couple of settings we can activate to assist with Alarm transmission via NBN.
We can see these via Installer Codepad Programming and also in the Solutionlink programming software.
In Installation programming through the codepad under Menu 522 Phone Line Options we see:
Digital Line
Low Voltage Line Note these 2 settings are not enabled by default
In Solutionlink Panel programming under Comms / Properties/ Phone Line Options we see
Digital Line
Low voltage Line again these 2 are not enabled by default
Latest Panel Firmware V2.30.10 has these settings in panel programming.