I have my cellphone setup to use google voice for voicemail. I recently setup my new Obi200 on my google voice number which seems to be working great for my home phone. The only issue is when somebody calls my cellphone it is ringing for a really long time before voicemail picks up. My assumption is it's ringing my cell first, then my home phone then finally going to voicemail after neither picks up. Is there a way around this?