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- Aus telephone voltages and frequencies
Re: Aus telephone voltages and frequencies
I should explain that I worked for Telstra for 23 years as an analog
For those exchanges the battery backup consisted of the batteries
being 'floated' across the power supply. The batteries were 24 x 2
volt hence a nominal 48 volts, but the power supply was set at 52.8
to maintain the battery charge.
The ring voltage is/was 80 volts AC which when added to the 50 volts
gives 130 volts peak.
Its enough to give a non lethal shock.