Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño
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Overhead Mapping
The individual SONET overhead byte designations are laid out in Table 2-4.
Table 2-4: SONET Transport and Path Overhead Byte Designations
Transport Overhead
Path Overhead
Framing Trace
Trace
A1 A2
J0/Z0
J1
BIP-8
B1/undefined
Orderwire
E1/undefined
User
F1/undefined
BIP-8
B3
Section DCC
Signal Label
Section
D1/undefined D2/undefined D3/undefined
C2
Pointer
H1
Pointer
H2
Pointer Action
H3
Path Status
G1
BIP-8
B2/undefined
APS
K1/undefined
APS
K2/undefined
User Channel
F2
Line DCC
Indicator
D4/undefined D5/undefined D6/undefined
H4
Line DCC
Growth
D7/undefined D8/undefined D9/undefined
Z3
Line DCC
Growth
D10/undefined D11/undefined D12/undefined
Z4
Line
SSM
S1/Z1
REI-L
M0 or M1/Z2
Orderwire
E2/undefined
Tandem Connection
Z5