Alcatel 1660SM Technical Handbook page 210

c ) Multiplex Section layer :
•
Multiplex Section layer Trail Termination (MST): MSn_TT_Sk
•
B2:
•
M1:
•
K2[6–8]: MS–RDI detection.
•
K2[6–8]: MS–AIS detection.
•
Multiplex Section Sub–layer Protection function (MSP):
– Multiplex Section layer
MSn/MSnP_A_Sk
•
the K1–K2 information (APS protocol) is recovered .
•
AIS or SSF insertion
– Multiplex Section Protection Sub–layer Trail Termination: MSnP_TT_Sk
•
AIS or SSF detection
•
TSF insertion (on SSF detection)
•
Multiplex Section layer Adaptation to the High Order Path layer (MSA): MSn/Sn_A_Sk
•
AU–4 Pointer interpreter.
•
LOP detection
•
AU–AIS detection
•
AIS or SSF insertion (on LOP and AU–AIS detection)
•
PJE (Pointer Justification Event) count.
d ) High Order Path layer:
•
High Order Path Overhead Monitoring Function (HPOM)
– High Order Path Overhead Trail Termination: Snm_TT_Sk
•
J1:
•
G1[1–4]: The REI information is recovered.
•
G1[5]:
•
C2:
•
B3:
•
TSF insertion
•
TSD insertion
TSF and TSD are used for SNCP switch
•
High Order Supervisory Unequipped Termination
– High Order Supervisory Unequipped Trail Termination (HSUT): Sns_TT_Sk
•
J1:
•
G1[1–4]: The REI information is recovered.
•
G1[5]:
•
C2:
•
B3:
ED
02
BIP–24N Errored Block count ––>Ex–BER, Signal Degrade alarm
MS–REI recovery.
to the Multiplex Section Protection Sub–layer Adaptation:
Path Trace information is recovered.
Path Status monitoring ––> HP–RDI detection.
Signal Label Monitoring ––> UNEQ and VC–AIS detection.
VC–4 BIP–8 Errored Block Count ––> Ex–BER and Signal Degrade alarm
Path Trace information is recovered.
Path Status monitoring ––>HP–RDI detection.
Signal Label Monitoring ––> UNEQ and VC–AIS detection.
VC–4 BIP–8 Errored Block Count.
3AL 91669 AA AA
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