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High Order Path layer Trail Termination Function (HPT): Sn_TT_Sk
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J1:
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G1[1–4]: The REI information is recovered.
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G1[5]:
•
C2:
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B3:
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High Order Path layer Adaptation to Low Order Path layer (HPA): Sn/Sm_A_Sk
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VC–4 disassembly.
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TU pointer interpretation.
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LOP detection.
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TU–AIS detection.
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C2:
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H4:
e )
Low Order Path layer:
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Low Order Path Overhead Monitoring Function (LPOM)
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Low Order Path Overhead Trail Termination: Smm_TT_Sk
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J2:
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V5[8]:
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V5[3]:
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V5[5–7]: Signal Label Monitoring ––> VC–AIS detection.
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V5[1,2]: VC–m BIP–2 Errored Block Count ––>Ex–BER, Signal Degrade alarm
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AIS or SSF detection––>SSF alarm
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TSF insertion (used for SNCP switch)
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Low Order Supervisory Unequipped Termination (LSUT)
–
Low Order Supervisory Unequipped Trail Termination: Sms_TT_Sk
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V5[5–7]: signal label is recovered from the VC–m. 000 (unequipped) is expected.
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J2:
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V5[1,2]: BIP–2 is recovered.
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V5[3]:
•
V5[8]:
ED
02
Path Trace information is recovered ––> TIM detection.
Path Status monitoring ––>HP–RDI detection.
UNEQ detection.
VC–4 BIP–8 Errored Block Count ––> Ex–BER, Signal Degrade alarm
HP–SLM (signal label mismatch) detection.
LOM (Loss of Multiframe) detection.
Trace Identifier Monitoring.
RDI information is recovered and reported.
REI bit is recovered and the derived performance primitives are reported.
trail trace identifier is recovered.
REI bit is recovered and the derived performance primitives is reported.
RDI information is recovered and reported.
3AL 91669 AA AA
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