I have the OBI 202 and using Google Voice. When on a call, about once per minute, the listener cannot hear my voice for about 5 seconds. I have no issues hearing them. My internet upload rate is about 2 to 5 times faster than the download.
It does not matter which party initiates the call and it happens on all calls at any time. My internet cable is connected directly to the OBI202 and the wireless router is connected on the out of the OBI202.