Additional testimony was taken from Dr. Karlheinz Brandenburg , who worked with Johnston at Bell Labs .
Coincidentally , AT&T inventor James Johnston was employed by Microsoft post-AT&T breakup and during the trial .
Additional testimony was taken from Dr. Karlheinz Brandenburg , who worked with inventor at Bell Labs .
Coincidentally , AT&T inventor James Johnston was employed by Microsoft post-AT&T breakup and during the trial .