Alcatel 1850 TSS-320 Technical Handbook page 75

c) Multiplex Section Layer
• Multiplex Section Layer Trail Termination: MSn_TT
MSn_TT_Sk
B2:
M1, M0:MS-REI recovery (M0 significant for STM-64 only)
K2[6-8]:MS-RDI detection
K2[6-8]:MS-AIS detection
D4-D12:MS data communication (DCCM) extraction
S1:
TSD insertion on MS-DEG (Signal Degrade) detection
TSF insertion (on MS-AIS detection)
MSn_TT_So
B2:
M1, M0:MS-REI insertion (M0 significant for STM-64 only)
K2[6-8]:MS-RDI insertion
K2[6-8]:MS-AIS insertion
D4-D12MS data communication (DCCM) insertion
S1:
• Multiplex Section Sub-layer protection function:
–
Multiplex Section Layer Adaptation to the Multiplex Section Protection Sub-layer: MSn/MSnP_A
MSn/MSnP_A_Sk
MSn/MSnP_A_So
–
Multiplex Section Protection Sub-layer Termination: MSnP_TT
MSnP_TT_Sk
MSnP_TT_So
• Multiplex Section Layer Adaptation to the high Order Path Layer: MSn/Sn_A
MSn/Sn_A_Sk
AU-3/4 Pointer interpreter
Standard concatenation management (AU4-4c/AU3-12C; AU4-16c/AU3-48C; AU4-
64c/AU3-192C)
SSF insertion (on LOP and AU-AIS detection)
MSn/Sn_A_So
AUG assembly and byte interleaving
AU-3/4 Pointer generator
AU-AIS generator
PJE (Pointer Justification Events) generated count (SDH only)
d) Path Layer
Technical Handbook Common
Functional Description
BIP-24N Errored Block count
SSM message extraction
BIP-24N calculation and insertion
SSM message insertion
the K1-K2 (extended to K0) information (APS protocol) is recovered
SSF insertion (on TSF detection)
SSD insertion (on TSD detection)
generation of K1-K2 information (APS protocol - extended to K0).
SSF detection
TSF insertion (on SSF detection)
no information is inserted
Alcatel 1850 TSS-320 Rel. 1.1
8DG 07734 AAAA Edition 01 73/270