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How quiet should a quiet line test be?

lunarjetman
Grafter
Posts: 59
Registered: 31-07-2007

How quiet should a quiet line test be?

If I dial, from a corded phone, 17070 and select option 2 for the quiet line test I do hear a gentle background hiss. I realise that without hearing it it's hard to say but would that be deemed quiet or noisy?

I did the test on a second phone line that doesn't have ADSL on it as I was wondering whether noise in my second line could impact the SNR on my primary line which does have ADSL on it.