Obi202 works fine except in one specific situation: When I call my father, the phone rings and I hear it and he hears it. But when he answers, I hear white noise kind of like a fax machine. If my father calls me back, everything works fine. If I call him from my computer using the same Google Voice number registered to my Obi202 it works fine. If I call him from my Comcast landline or cell phone it works fine. I do not seem to have any problem calling any other numbers from my Obi202 excepts my father's Comcast digital voice phone number. Please help.
UPDATED November 3, 2018
Thank you for all your replies.
The problem still remains. It appears that it happens intermittently and changing the FaxDetectionMethod parameter did not fix it. Perhaps the most useful thing I can say is that the problem occurs only when I use my Obi202 with Google voice to call only my father's phone number. I have another phone line that uses Comcast digital voice and can call my father's number and the problem never occurs. There is an HP all-in-one printer with a fax line attached to my father's phone line and he has set the fax to pick up only after 6 rings, but when I call on my Obi line, the answer happens after the first couple of rings and I get the static sound that seems like a fax machine. I have asked him to disconnect the phone cord from his printer (and there is no answering machine attached), but I cannot confirm whether this was successfully done. He is elderly and it is difficult for him to reach and see behind the fax machine and he may not have properly disconnected the right phone cord (since there are two.)
I tried an experiment to see whether my Obi 202 would complete the call to my father if I called out on a different number. Like my phone 1, my phone 2 is also a Google Voice number. The main difference in set up is that phone 1 uses CallCentric for incoming calls so I can get callerID. To access my phone 2 number, I use the command **3 + the number I want to dial out to. When I call my father using phone 2 the call connects normally. But, one minute later, when I called using phone 1 when my father answered the call all I heard was the static white noise like a fax machine. I am not sure what this experiment proves. I wanted to see whether the Obi 202 and Google Voice services were the sources of the problem and it appears they are probably not. The only remaining variable would seem to be the unique Google Voice number associated with my phone 1. I would appreciate any insights forum member might share. Thanks!