Dane County 911 Call Center officials said the volume of the recorded 911 call from made by a slain University of Wisconsin-Madison student sometime before she was killed in April could have been different from the actual call.
WISC-TV found that’s because recorded calls and those at dispatcher consoles can have different volume levels.
At issue nine months after the slaying of Brittany Zimmermann, 21, is why a former 911 dispatcher didn’t hear “sounds of an emergency” on the April 2 call from Zimmermann’s cell phone when police and others did hear sounds of a struggle.