内容简介：
This completely revised version of the bestselling first edition offers updated information on current trends in technology development including SDH/SONET transmission, BISDN and ATM technology, and HDTV. It contains new material covering emerging technologies including broadband subscriber networks, synchronous optical transmission and network survivability, TCP/IP, wireless and IEEE highspeed LANs, data services in ATM networks, highspeed and real-time protocols, and information infrastructures.