You can have the phone line set up thru your local telco to "hunt" to your main line. But make sure the main lines don't "hunt" or rollover to your direct lines. The only other real option to not get a busy signal would be to place voicemail from your provider on the line. Which seems like a waste of money seeing that you already have VM.

[This message has been edited by mminelli (edited April 29, 2005).]