You can never be too safe. My upbringing has instilled in me a constant fear that I am always vulnerable to becoming a victim. As a result, I take up (sometimes obsessive) habits that (I think) help keep me safe. It can't hurt, right? If you're at home with an alarm system and a landline, check out this tip for keeping wanna-be burglars off the endlessly ringing trail.
Usually, installing a home alarm system and keeping an at-home landline go hand-in-hand. You can use this home tech linkup to your advantage when it comes to keeping your abode safe in your absence.
Ask your alarm guy if he can rig up your home so that when you leave the house and arm your alarm's "away" mode, it automatically disconnects the phones in the house. This way, your phones won't give away that nobody's-home incessant ringing.
When you return to the house and deactivate the alarm, your phones will turn back on as normal. It's easy, inexpensive and a small step to take for home safety.