false alarms. Based on a standard called CP-01-2000, developed by the American National Standards Institute and Security Industry Association, the new generation of keypad control panels takes aim at user error by building in extra precautions that minimize unwarranted dispatch of emergency responders. Some of the features of CP-01 keypads include a progress annunciation function that emits a different sound during the last 10 seconds of delay, which hastens exit from the premises. Also, the exit time doubles if the user disables the pre-warning feature. Other "rules" address failure to exit premises, which results in arming all zones in Stay Mode and a one-time, automatic restart of exit delay. However, if there is an exit error, an immediate local alarm will sound. Audio and video verification Alarms that utilize audio, video, or combination of both audio and video verification technology give security companies, dispatchers, police officers, and property managers more reliable data to assess the threat level of a triggered alarm. Audio and video verification techniques use microphones and cameras to record audio frequencies, video signals, or image snapshots. The source audio and video streams are sent over a communication link, usually an Internet protocol (IP) network, to the central station where monitors retrieve the images through proprietary software. The information is then relayed to law enforcement and recorded to an event file, which can be used to plan a more strategical and tactical approach of a property, and later as prosecution evidence. An example of how this system works is when a passive infrared or other sensor is triggered a designated number of video frames from before and after the event is sent to the central station. A second video solution can be incorporated into a standard panel, which sends the central station an alarm. When a signal is received, a trained monitoring professional accesses the on-site digital video recorder (DVR) through an IP link to determine the cause of the activation. For this type of system, the camera input to the DVR reflects the alarm panel's zones and partitioning, which allows personnel to look for an alarm source in multiple areas. The United States Department of Justice states that legislation requiring alarm companies to verify the legitimacy of an alarm, before contacting law enforcement (commonly known as "verified response") is the most effective way to reduce false burglar alarms. The Department of Justice considers audio, video, or an