Gary C. Kessler is Director of Information Technology at Hill Associates (http: //www.hill.com), a training and consulting firm in Colchester, Vermont, specializing in telecommunications and computer networking. He is a frequent speaker at industry conferences, has written many papers for industry publications, and is coauthor, with D. A. Train, of Metropolitan Area Networks: Concepts, Standards, and Services, also published by McGraw-Hill. Besides ISDN and B-ISDN, Gary's areas of interest are TCP/IP and the Internet, network and computer security, electronic commerce, LANs and LAN interconnection, packet switching and X.25, telecommunications standards and history, and emergency medicine. His e-mail address is kumquat@hill.com.
Peter V. Southwick is a Senior Member of the Technical Staff at Hill Associates. He is an active member of the Vermont chapter of the IEEE, and has presented SS7 and ISDN Seminars for ICA/Supercom. Peter's previous positions with GTE Government Systems and Champlain Telephone Company total 20 years of telephony experience. His e-mail address is pvs@hill.com.
