Thanks for the reply. I guess it is not just the T.38, because I had already tried what you are suggeted and it did not resolve the issue. I was not sure if that was all that was required to disable T.38.
I am surprised you have not heard of this issue before, since I have seen many people talking about about problems faxing with OBI202 and Google voice, but sadly I have never found any responses/solutions.
As I said, with the same Googgle voice account, from the same internet connection, same ethernet and phone line cable as well, and it works fine with the OBI100, but when I put in the OBI202, phone works fine but I cannot fax. Whereas on the OBI100 FAX works flawlessly.
I have even tried disabling all codecs on the OBI202 except the 711u, but I am not sure if I did that correctly. Because it still did not work... Faxing did not work with the old frimware nor with the current firmware...
It is sort of a pain, I am stuck using the old OBI100 instead of using the OBI202. I have two OBI202, and both have the same issue... I also have an OBI200, but I have not tested it yet, but I expect the same result as with the OBI202... All units where purchased new.
Any further suggestions would be appreciated. Thanks for your help so far.