OBi200 and Hangouts/Voice Cost and Questions

[talkinggoat]

I am thinking of getting an OBi200, to have my Google Hangouts number on an actual phone, rather than using the app. There are a couple questions I have, before I buy it though, that I want to get clear.

I already have a Google Hangouts/Voice number.
Am I correct that I have to set up an account, through OBi?
Does it cost me anything through OBi?
Will I be able to make/receive phone calls, using my Google number, on my handheld (landline) phone or will I have to get secondary service through another SIP provider?

[SteveInWA]

I am thinking of getting an OBi200, to have my Google Hangouts number on an actual phone, rather than using the app. There are a couple questions I have, before I buy it though, that I want to get clear.

I already have a Google Hangouts/Voice number.
Am I correct that I have to set up an account, through OBi?  Yes.
Does it cost me anything through OBi?  No.
Will I be able to make/receive phone calls, using my Google number, on my handheld (landline) phone or will I have to get secondary service through another SIP provider?  Yes, that is the point of having an OBi device;
it acts as a Google Chat client, and you can forward inbound Google Voice calls to it, and make outbound calls,
using your Google Voice account.