Aus telephone voltages and frequencies

StrandElectric · 2010-10-09T00:52:21+00:00

Anyone here know the Australian standards fora) DC voltage on a quiescent telephone line.b) voltage (peak and RMS) and frequency of ring current . Is it a pure sine wave?c) are the standards maintained throughout the Aus system, regardless of the exchange type and manufacture, eg Ericcson AXE etc.?Many thanks. I have Googled for hours without sucess. There must be an Australian standard somewhere!

Oct 09, 2010 21 Replies

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atec77 15 years ago

not in the same manner if you don't know don't bother

X-No-Archive: Yes

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Barry 15 years ago

Do you know what back EMF is and when and why it occurs?

Feel free to ask.

That won't work there. Ask someone you trust.

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