Fax line used for outgoing calls when incomming fax not coming in?

Question

So is there a way to do this? Can I route the 1 FXO to FXS for incomming calls (and plug fax into FXS) or something like this and then use that line as an outgoing line when not in use?
I don't need step but steps but the basics of how something like this could be configured would be awesome!!!

Answer 1

I'm not sure if I understand. I set this up, so I understand phone systems enough to do this, but I don't really don't know the terminoligy.
Let me back up.
Currently our business has 2 lines and a fax line. Right now the two lines are plugged into 2 FXO ports and the fax line is just plugged into the fax machine--not the UC320. We're in mixed mode, not pbx specifically. We get one or two faxes a day and we send two or 3 faxes a day. We'd like to be able to use the fax line for outgoing calls when it's not being used for fax.
So I need to be able to control the in and the out of the fax line. I need all incomming calls for the fax number routed to what I assume would be the FXS port (with the fax machine plugged into the FXS port), and none of the other lines routed in this way (the other lines would go to the attendant).
Then I need if we send a fax, we need for when the fax machine opens the line for it to automatically be routed to the fax line. Then the fax machine can dial and send faxes. I think we send few enough faxes that we're not too worried about what happens if we try to send a fax and the phone is busy, but it would be nice to be able to look at a phone and tell if the fax line is in use.
I don't really care if the Fax line is part of a shaed FXO, it can be a seperate choice on the phone for making outgoing calls (one of the buttons next to the screen or something).
Is all this possible? Is it only possible in PBX style or is mixed ok?