Detective Scandal's Investigation of the Brooklyn Homicide

Detective Scandal went on with his investigation, obviously seeing if there was anything around the area that could aid him. He also looked at phone records to see if there had been any emergency calls placed from this address in the months before the body is found. The call just goes silent, like what was happening? Why did the call just end when it did? We do know this entire case began with a 911 call to a Brooklyn dispatcher. Investigators were trying to determine why a patrol car was never dispatched,. Could that have made a difference in this homicide?