Cisco Cisco ONS 15310-MA SONET Multiservice Platform Manuale Tecnico

Introduction
 Prerequisites
      Requirements
      Components Used
      Conventions
 SDH Analysis
      The SDH Link
      STM1 Frames
      STM1 SOH
      VC4 Concatenation
      SDH Hierarchy
      SDH Maintenance Interactions
      Alarms and Detection Criteria
      STM1 SOH, HO−POH and LO−POH Bytes
 Related Information

This document provides an overview of Synchronous Digital Hierarchy (SDH) represented in images.

There are no specific prerequisites 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.

These sections provide an overview of SDH in graphical format.

This diagram shows what an SDH link looks like.