At present we would have to answer this with a no.
There is no security panel manufactured that can guarantee a clean signal is received when using VOIP. Line seizure is a problem as VOIP doesn't seize and release for the alarm system, this means that if your phone is in use the security panel cannot communicate with the central monitoring station.
VOIP is great for reducing your monthly phone bill. Our recommendation is to reduce your existing landline to the very basic, no thrills service. This will guarantee communication to the central station when you need it as well as give you an extra back up phone for other emergencies or in the event of an extended power failure. You will still save money on the long distance advantages of VOIP.
Your other alternative is to use a cellular back-up for your alarm system. The up front cost for this will run you $500.00 to $600.00 dollars and an increase in your monthly monitoring fees. Our experience tells us that you are still better off to maintain a very basic land line phone service.
With the growing use of VOIP the technology will come for security systems to utilize this service. We will update this when we have confirmed a reliable working control panel utilizing VOIP and still provide the security measures we now enjoy.