Can we transfer a phone number to another line in the house?

My wife and I have 2 phone lines into our house. One line is the family line and has alot of features as well as being our Sympatico highspeed dsl line. We are 2 months into a 2 year contract with Sympatico which makes it difficult to cancel this line. This line is registered in my name. The second line is my wife's home business line. It is just a simple phone line and has no contracts attached to it and it is registered in my wife's name.

Here is our question: We want to move the phone number from my wife's business line over to the family line. Then we want to cancel the service for my wife's business line. Is this possible?