1
Provide a frame alignment pattern 提供帧定位类型 A1 = 11110110 A2 = 00101000
Format: 3N 格式: 3N
A1
A1
A1
A2
A2
A2
J0
F1
D3
B1
D1
E1
D2
H1
H2
H3
B2
K1
K2
J1
B3
C2
G1
F2
H4
F3
K3
N1
D4
D7
D10
S1
D5
Z1
Z2
D8
D11
D6
D9
D12
M1
E2
Framing Bytes A1, A2
帧定位字节
2
Transmits a fixed pattern repetitively 反复传送一个固定类型
Used by the section receiver to verify its continued connection to the intended transmitter 用于段接收机向发送机确认它的继续连接性
Format: 1 格式: 1
A1
A1
A1
A2
A2
A2
J0
F1
D3
B1
D1
E1
D2
H1
H2
H3
B2
K1
K2
J1
B3
C2
G1
F2
H4
F3
K3
N1
D4
D7
D10
S1
D5
Z1
Z2
D8
D11
D6
D9
D12
M1
E2
Regenerator Section Trace J0
中继段跟踪
3
Provides an 8-bit wide bit- interleaved even parity check for error performance monitoring at the regenerator section level 在中继段级别上,为误码性能监测 提供8个比特位的偶校验
The parity check puted for all bytes of the previous STM-N frame after scrambling 对扰码后的前个STM-N所有字节 进行奇偶校验
puted value is placed in this byte before scrambling 在扰码前将检验结果存于该字节
Format: 1 格式: 1
A1
A1
A1
A2
A2
A2
J0
F1
D3
B1
D1
E1
D2
H1
H2
H3
B2
K1
K2
J1
B3
C2
G1
F2
H4
F3
K3
N1
D4
D7
D10
S1
D5
Z1
Z2
D8
D11
D6
D9
D12
M1
E2
8-bit Parity Check B1
8比特奇偶校验
4
Provide a local orderwire channel for munication 为语音通信提供本地公务信道
E1 may be accessed by regenerators 中继器可以访问E1
E2 may be accessed by multiplexers 复用器可以访问E2
Format: 1 格式: 1
A1
A1
A1
A2
A2
A2
J0
F1
D3
B1
D1
E1
D2
H1
H2
H3
B2
K1
K2
J1
B3
C2
G1
F2
H4
F3
K3
N1
D4
D7
D10
S1
D5
Z1
Z2
D8
D11
D6
D9
D12
M1
E2
Orderwire Channels E1, E2
公务信道
5
Allocated for user’s purposes 为用户目的分配的信道
Terminated at all regenerator section-level equipment 在所有的中继段级别设备终止
Format: 1 格式: 1
A1
A1
A1
A2
A2
A2
J0
F1
D3
B1
D1
E1
D2
H1
H2
H3
B2
K1
K2
J1
B3
C2
G1
F2
H4
F3
K3
N1
D4
D7
D10
S1
D5
Z1
Z2
D8
D11
D6
D9
D12
M1
E2
User Channel F1
用户信道
6
Provide a message-based munications channel, including admin
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