Depending where you live, you can set up a list of 12 to 15 numbers you want to have forwarded to a different phone. When someone calls from a number on your list, you'll hear a short ring, and the call will be forwarded.
You can't answer incoming calls from forwarded numbers. (They're transferred before you can pick up the phone.) If you decide you no longer want a certain number forwarded, you will need to delete the number from your forward list or turn Selective Call Forwarding OFF.
Incoming calls that aren't on your list will ring through to your home phone and can be answered. You can continue to make outgoing calls as you always do.
The number receiving your forwarded calls will ring normally.
If you forward calls to a long distance or toll number, you'll be charged any applicable rates.