Walter GoralskiWalter Goralski has more than 30 years of experience in the data communications field, including 14 years with AT&T. He is currently a Senior Course Developer and instructor at Juniper Networks(R). Walter has spent 15 years as an Adjunct Professor atPace University Graduate School, where he designed and deployed their graduate program in telecommunications. Walter is a longstanding member of the IEEE, has written articles in numerous industry publications, and is the best-selling author of SONET, Second Edition and several other books on ADSL, VoIP, ATM and frame relay. Read More Read Less