Document ID: 28081
This document provides an overview of Synchronous Optical Network (SONET), represented in images.
Note: Tables and diagrams courtesy of JDS Uniphase Corporation
There are no specific requirements for this document.
This document is not restricted to specific software and hardware versions.
Refer to Cisco Technical Tips Conventions for more information on document conventions.
This section provides an overview of SONET in a graphical format.
Figure 1 shows what a SONET link looks like.Figure 1 – A SONET Link
Figure 2 shows the Synchronous Transport Signal level 1 (STS-1) frame structure.Figure 2 – STS-1 Frame Structure
Figure 3 shows the STS-1 Transport and Path Overhead (SONET Overhead).Figure 3 – STS-1 Transport and Path Overhead
Figure 4 looks at OC-12 concatenation.Figure 4 – OC-12 Concatenation
Figure 5 displays the SONET hierarchy.Figure 5 – SONET Hierarchy
Figure 6 shows how SONET maintenance interactions appear.Figure 6 – SONET Maintenance Interactions
Table 1 lists what the alarms mean, and their detection criteria.Table 1 – Meaning of Alarms and their Detection Criteria
Figure 7 – SOH Section Overhead
Figure 8 – LOH Line Overhead
|Updated: Feb 06, 2005||Document ID: 28081|