I know faxing over voip can be unreliable. However, I was able to send the occasional fax using my PAP2T and
voip.ms. However, I have not been able to get my OBi to send a fax at all!
I have line 1 set to
voip.ms and line 2 set to GV. I can't get a fax to go out over either of them.
For those that have had sucess with sending faxes, did you have to adjust any settings to make it work?