A two way voice home security system is the only way to insure you can get a police response in most metropolitan areas like Las Vegas. If you do not have two way voice when you security system goes off, the monitoring company must call you to ask if there is a problem. If you don't know or no one answers the phone the only thing the monitoring company can do is send a guard. The guard can take anywhere from 15 min to 2 hrs to show up and them call the police if a burglary has occurred. Two way voice systems basically have a telephone built in to the alarm. So instead of calling your phone, the monitoring company calls the alarm panel it's self though a land line connection and can hear if a break-in in in progress. This mean they can call the police now instead of waiting for a guard to verify.
Now a days land lines are disappearing at a rate of 700,000/month. This causes a foreseeable problem with two voice in the future. But not to worry a land line is no longer necessary for two way voice communication. 2gig, First Defense Security's equipment provider has built all of our home security systems with two way voice over GSM. What does this mean for you? This means no land lines. Two way voice can be anywhere you can make a cell phone call. A burglar could completely rip the panel off the wall without disabling the two way voice feature. The panels battery backup will keep the panel going for hours without power.
