20/year gets you;
Free incoming all year
Free comwave to comwave calling all year
250 minutes a month (If you use these minutes in the month, then you will still have free incoming and c to c calling)
You are with rogers, so I will assume you know
This is for the PB. If you want to have full service then go to Home Phone and Long Distance | VoIP Internet Phone | Comwave Telecom Canada
and search for residential service or voip service.
Long distance is charged at their special rate (Don't use their long distance plan(s), so I cannot comment)
I would e-mail their support staff and ask questions before signing up.