If you use an Obihai device, I highly recommend that you setup a new Google voice account for it, separate from your main Gmail account, for just this reason.

If you use an Obihai device, I highly recommend that you setup a new Google voice account for it, separate from your main Gmail account, for just this reason. You still get an extra phone line that you can make and receive calls on, and you don't need to worry about your Gmail session intercepting your phone calls.