Physical Characteristics Of Stm-N Optical Interface; Interface Of Sdh Ne Clock (Sec); Error Bit Rate Of Sdh Link - Zte ZXA10 S300 Technical Manual

Interface
2,048 kbit/s
8,448 kbit/s
34 368 kbit/s
139 264 kbit/s
Note 1: Only used for codirectional interfaces.
Note 2: For the 2,048 kbit/s and 8, 448 kbit/s interfaces, the Qualcomm
shutdown frequency is 700 Hz (replace 18 kHz) and 80 kHz (replace 3 kHz)
respectively. The values in the table can be used for interconnection of different
networks. Alternatively, the two parties can follow other conventions.
Note 3: 64 kbit/s 1 UI = 15.6 µs
2048 kbit/s
8448 kbit/s
34 368 kbit/s
139 264 kbit/s 1 UI = 7.18 ns
Physical Characteristics of STM-N
Optical Interface
Comply with ITU-T G.957 recommendations.

Interface of SDH NE Clock (SEC)

The allowed maximum output jitter index at the synchronization
interface is 0.05 UI.

Error Bit Rate of SDH Link

This equipment simulates the 280 km HRDS. The test data
should be consistent with the index in Table 12.
1 2 − 2 8 0
T N
A B L E K M U M B E R
Rate
2048
(kbit/s)
ESR
< 6.16 ×
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Test Bandwidth
–3 dB frequencies (Hz)
20 to 100 k
18 k to 100 k (Note 2)
20 to 400 k
3 k to 400 k (Note 2)
100 to 800 k
10 k to 800 k
200 to 3.5 M
10 k to 3.5 M
1 UI = 488 ns
1 UI = 118 ns
1 UI = 29.1 ns
S E B
E C T I O N R R O R I T
139264/155
34368
520
< 1.155 × < 2.464 × 10-
Chapter 2 Technical Indexes
Peak-to-peak amplitude
(UIpp) (Note 3)
1.5
0.2
1.5
0.2
1.5
0.15
1.5
0.075
I
N D E X
622080
*
2488320
*
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