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ATIS 0900105.01

Synchronous Optical Network (SONET) – Automatic Protection Switching

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Organization: ATIS
Publication Date: 1 March 2000
Status: active
Page Count: 106
scope:

This document describes the protection switching protocols and algorithms for optical interfaces referred to as SONET. The SONET optical interface standard is specified in American National Standard for Telecommunications - Digital hierarchy - Synchronous Optical Network (SONET) - Basic description including multiplex structures, rates, and formats, T1.105-1995. In its initial version, this standard addresses protection switching for linear 1 + 1 and 1:n topologies, and bidirectional line-switched ring network topologies. Nested protection is for further study.

SONET automatic protection switching schemes utilize two bytes, K1 and K2, to implement a bit-oriented protocol for time critical switching operation. Other operations channels, including the Section and Line Data Communications Channels, may also provide non-time critical (e.g., > 50 ms) protection switching functions.

Independent protection of overhead channels, such as the DCC, are beyond the scope of this standard. Any special considerations pertaining to the use of wave-division multiplexing or directional couplers for transmitting multiple signals over the same fiber are beyond the current scope of this standard.

Document History

ATIS 0900105.01
March 1, 2000
Synchronous Optical Network (SONET) – Automatic Protection Switching
This document describes the protection switching protocols and algorithms for optical interfaces referred to as SONET. The SONET optical interface standard is specified in American National Standard...
March 1, 2000
Synchronous Optical Network (SONET) – Automatic Protection Switching
This document describes the protection switching protocols and algorithms for optical interfaces referred to as SONET. The SONET optical interface standard is specified in American National Standard...
March 1, 2000
Synchronous Optical Network (SONET) - Automatic Protection Switching
This document describes the protection switching protocols and algorithms for optical interfaces referred to as SONET. The SONET optical interface standard is specified in American National Standard...
January 1, 2000
Synchronous Optical Network (SONET) - Automatic Protection
A description is not available for this item.
January 1, 2000
Telecommunications - Synchronous Optical Network (SONET) - Automatic Protection Switching
A description is not available for this item.
January 1, 1995
Telecommunications - Synchronous Optical Network (SONET) - Automatic Protection Switching
A description is not available for this item.

References

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