Glossary
SONET/SDH Application
449
SDH Numbering Convention
SDH Numbering Convention
As per ITU G.707, the high order paths are defined using a 2 to 5 level
convention E,D,C,B,A depending on the rate of the STM-n used.
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E: the AUG-64 are numbered 1 to 4
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D: the AUG-16 are numbered 1 to 4
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C: the AUG-4 are numbered 1 to 4
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B: the AUG-1 are numbered 1 to 4
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A: the AU-3 are numbered 1 to 3
So for the naming is as follows for each of the following rate:
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[E,D,C,B,A] for STM-256
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[D,C,B,A] for STM-64
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[C,B,A] for STM-16
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[B,A] for STM-4
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[0] for AU-4 in STM-1
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[A] for AU-3 in STM-1
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[A] for the AU-3 in STM-0e, A=0.
Содержание FTB-8100 Series
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