I am having the same issue since the last firmware update.
Here is a copy of the email I just sent to support:
" I am having a problem when making outgoing calls on my 110 with GV. When I make a call, probably every other time i dial, I cant hear the person I am calling. This only happens when I make outgoing calls from my regular telephone plugged into the 110.
BUT, When I initiate an outgoing call from within Google voice with the call button and have it ring the 110, I do not have this problem.
I have reset the 110 and my router numerous times and also set the 110 back to default settings with no luck.
I have read that I cant back to a previous firmware because I have the latest update.
Any help would be appreciated."
If I get a response I will post here, also if anyone has suggestions please post.
Thank you,
j