aded connector, 72-73 Worldcom, 205-206 timed token protocol, 120 token frame, 120 token holding timer, 120 token rotation timer, 120 total internal reflection, 53-54, 56 x-rays, 26, 29, 100 transmission capacity, 8-9 transmission window, 64-66 traversing burning, 49-50 transmitter, 78-79 tunable laser, 8, 96-97 zero-dispersion wavelength, 64 Tyndall, John, 48 T1, 143-144, 160, 189-190 T3, 143-144 Numbers 1/f noise, 101 4B/5B coding, 111-114, 118 8B/10B coding, 131 UHF, 27 10BASE-F, 126 ultra high frequency (see UHF) 10BASE-FB, 126-127 ultraviolet, 31-32, 100 10BASE-FL, 126-127 10BASE-FP, 126-127 100BASE-FX, 127-128 100BASE-T, 124 1000BASE-LX, 132 valence band, 82, 99 1000BASE-SX, 131-132 valence shell, 82 1000BASE-T, 133 About the Author Gilbert Held is an internationally recognized author and lecturer who specializes in the application of computer and communications technology. The author of over 40 books covering personal computers, data communications, and business trade topics, he is the only person to twice win the competitive Karp Interface Award. A winner, as well, of the American Publishers Institute and numerous other industry awards, Mr. Held was selected by Federal Computer Week as one of the top 100 persons in government, industry, and academia who has made a dif- ference in the acquisition and use of computer systems. Among his other books are Voice Over Data Networks; Cisco Security Architecture; Cisco Router Performance Field Guide; and Voice/Data Internetworking) all from McGraw-Hill. Thomas G. Muth Functional Structures in Networks Thomas G. Muth Functional Structures in Networks AMLn - A Language for Model Driven Development of Telecom Systems With 191 Figures Springer Dipl.-Ing. Thomas G. Muth Frimans vägen 13 141 60 Huddinge Sweden thomas.muth@telia.com www.amln.se Library of Congress Control Number: 2004116863 ISBN 3-540-22545-5 Springer Berlin Heidelberg New York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically 