I've tried a variety of things that I have found on the net that supposedly worked for other equipment combinations on Freephoneline, all without success, don't remember all the details now, and have turned everything back to factory defaults since nothing that I have tried worked.
I am not trying to receive faxes at this point, only send. There is another way to receive them that I will work on later, but now I am concentrating on sending only. Freephoneline does not provide support for faxing, but I have read that it can be done with their system, they just won't help if there is a problem. I have not seen any information on how to do it with an OBi 202, so I think I am in uncharted territory.
Unfortunately I am only hacking as I don't have a PhD in faxology, lol.
When I tried faxing, I got the ring, the handshake, and it looked like it was going to work. Then it hesitated for a while (maybe a minute) and then gave me a communication error, don't remember the number, but always the same error.
I will try the suggestions from Shale and sdb- and report back, thanks for the suggestions.