Roger AckerleyRoger Ackerley (AFIMA, MSc, BA(Oxon)) is one of the UK's leading performance engineers. He obtained his Masters degree in Telecommunications Engineering and has applied his skills to a wide range of applications for over 20 years working for BT wherehe currently leads the Critical Solutions team within BT Exact's Performance Engineering Department. Roger is known internationally in his field through his participation at conferences both as presenter and session chair and through his standards work. His papers cover a range of subjects from hysteresis effects in networks to overall grade-of-service. Read More Read Less