Google Voice

Very interesting about how Google is getting investigated too. It'd be nice if this led to some actual freedom on how we use these devices. That would probably mean that prices would go up because the phone companies wouldn't want to subsidize them any longer. I wonder how the American public would react to that. source

I use it, being in the military means lots of transfers and an ever rotating home phone number. But to answer your question I'm not sure there is a way to forward a call you already answered. My understanding is that you need to just change who it rings before the call. Also don't know if your jailbroke or not but there is an app available in Cydia if you want to look into that, I use it and it serves it's purpose well enough. source

If we didn't have our phone service included with our FiOS package we wouldn't even have a home phone anymore. If our home phone rings it's usually a sales call so we never answer it even when it does wring. The only use it serves is if someone can't get through on our cells, they leave a message on the machine. source

I use it, being in the military means lots of transfers and an ever rotating home phone number. But to answer your question I'm not sure there is a way to forward a call you already answered. My understanding is that you need to just change who it rings before the call. Also don't know if your jailbroke or not but there is an app available in Cydia if you want to look into that, I use it and it serves it's purpose well enough. source

I don't believe they have an invite system set up for this service. I've had it since it was Grand Central and have never seen invites, so just do what Hostile recommends. source