Dear all, I hope someone can help me with this question

1) We have two lines coming into the house.
2) We have a prime number and wish to install line hunt so that if that line is busy, it automatically goes to the other line.
3) The other line has a duet function on it which means that the same line has two phone numbers attached to it; one for voice and one for fax.
4) Installing line hunt means that we will lose the duet function and therefore the fax number.

Question: given these circumstances would fax streaming be any good for us, or is there a way in which incoming fax’s could be turned into emails using our ADSL line? Then we would only need to turn our fax machine on when we want to send a fax and it wouldn't interfere with our line hunt.

Thanks in advance

Terry