What do you mean "service tones"? Dial tone?
From the OBiTALK portal page, click on the gear icon to get to the OBi 100's settings, and then get into Expert mode. Go to the Status section, System status, and look at the firmware level. What is it?
Log into your Google Voice account, go to the settings page, on the Phones tab, and take a screenshot. Redact (black out) all personal information but the last 4 digits of any phone numbers and post it here.