Data Communications and Networking Forouzan Fourth Edition Chapter 17 广域网SONET/SDH 17.1 Copyright The McGraw-Hill Companies,Inc.Permission required for reproduction or display
17.1 Chapter 17 广域网SONET/SDH Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display
Note SONET由ANSI制定； SDH由TU-T制定. SONET(Synchronous Optical Network,同步光纤网络) SDH(Synchronous Digital Hierarchy,同步数字体系) 17.2
17.2 SONET由ANSI制定; SDH由ITU-T制定. Note SONET (Synchronous Optical Network,同步光纤网络) SDH (Synchronous Digital Hierarchy,同步数字体系)
17-1体系结构 首先介绍SONET系统的体系结构：信号、设备和连 接。 Topics discussed in this section: 信号Signals SONET设备SONET Devices 连接Connections 17.3
17.3 17-1 体系结构 首先介绍SONET系统的体系结构：信号、设备和连 接. 信号 Signals SONET设备 SONET Devices 连接 Connections Topics discussed in this section:
Table17.1 SONET/SDH速率 STS oc Rate (Mbps) STM STS-1 0C-1 51.840 STS-3 0C-3 155.520 STM-1 STS-9 0C-9 466.560 STM-3 STS-12 0C-12 622.080 STM-4 STS-18 OC-18 933.120 STM-6 STS-24 0C-24 1244.160 STM-8 STS-36 0C-36 1866.230 STM-12 STS-48 0C-48 2488.320 STM-16 STS,synchronous transport signal,同步传输信号 OC,optical carrier,光载波 STM,synchronous transport module,同步传输模块
17.4 Table 17.1 SONET/SDH速率 STS,synchronous transport signal,同步传输信号 OC,optical carrier，光载波 STM,synchronous transport module,同步传输模块
Figure17.1使用SONET设备的简单网络 ADM:Add/drop multiplexer R:Regenerator STS MUX:Synchronous transport signal multiplexer T:Terminal STS DEMUX:Synchronous transport signal demultiplexer STS ADM STS MUX DEMUX Add YDrop Section Section Section Section Section Line Line Path 17.5
17.5 Figure 17.1 使用SONET设备的简单网络