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Enhanced Call Verification Enhanced Call Verification (ECV) is an industry wide initiative which requires the central station to make a second call to a second telephone number before requesting a dispatch from law enforcement agencies to a citizen’s alarm activation.  Studies have shown that when a dealer implements enhanced call verification, 40-50 percent of alarm signals that traditionally would have been dispatched under premise verification were not because the signal was verified as not valid on the second call.   Overview >>   Benefits >>   Implementation Guide >>