ETS 300 746 : 20001
Current
The latest, up-to-date edition.
TRANSMISSION AND MULTIPLEXING (TM) - SYNCHRONOUS DIGITAL HIERARCHY (SDH) - NETWORK PROTECTION SCHEMES - AUTOMATIC PROTECTION SWITCH (APS) PROTOCOLS AND OPERATION
Hardcopy , PDF
English
Foreword
1 Scope
2 Normative references
3 Abbreviations
4 Definitions and classifications
4.1 General definitions
4.2 Ring definitions
4.3 Protection classifications
5 Multiplex section trail protection protocols
5.1 Multiplex section trail linear protection
5.2 2-fibre multiplex section trail shared protection
ring
5.3 4-fibre multiplex section trail shared protection
ring
5.4 2-fibre multiplex section trail dedicated protection
ring
6.1 LO/HO trail protection
6.2 LO/HO SNC protection
Annex A (normative): Squelching mechanism in MS-Shared
Protection Rings
A.1 Squelching of HO traffic
Annex B (informative): Examples of protection switching
in an MS shared protection ring
B.1 Unidirectional signal fail (ring)
B.2 Bi-directional signal fail (ring)
B.3 Unidirectional signal degrade (ring)
B.4 Detection and clearing of a unidirectional
SF-R in presence of another unidirectional
SF-R on a non-adjacent span
B.5 Unidirectional SF-R pre-empting a
unidirectional SD-R on a non-adjacent span
B.6 Unidirectional SD-R pre-empting a
unidirectional MS-R on an adjacent span
Annex C (informative): Bibliography
History
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