GB/T 15941-2008Requirements for Synchronous Digital hierarchy (SDH) Optical Fiber Cable Line Systems (English PDF)

6.2 ATM signals are mapped into the VC-n 17

Method 6.3 Ethernet signals are mapped into VC-n or VC-n-Xv 17

7 System components and device type 17

7.1 System components 17

7.2 Device Type 17

8 Optical Interface Specification 17

8.1 Optical interface standardization purposes 17

17 8.2 Classification of optical interfaces

8.3 Optical interface parameters 18

9 Power Interface Specification 22

9.1 PDH tributary of the electrical interface parameters 22

9.2 155520kbit/s electrical interface parameters 22

13.1 Definition of availability 31

Availability goals 13.2 32 Unavailable time allocated 13.3 32

14 NMS 32

14.1 system technical requirements 32 14.2 subnet management system functional requirements 32

14.3 Element Management System functional requirements 32 14.4 local maintenance terminal 32 14.5 operations, administration and maintenance interface 32

15.2 User Interface 33

15.3 33 room environment conditions

15.4 Supply conditions 33

Appendix A (Informative Appendix) SDH maintenance and engineering error reference index 34

A. 1 international channel and multiplex section 34 maintenance indicators A. Channel Indicators 34 1.1 Maintenance A. 1.2 MSP maintenance indicators 34 A. 2 Current Channel Error Indicators domestic SDH engineering 35 A. 2.1 SDH network throughout the end 27000km hypothetical error performance reference channel 35 A. Long-term indicators 2.2 digital channel 35 A. Short-term indicators 2.3 digital channel 35 A. 3 to ITU-TG. Channel Error Indicators 828 domestic SDH-based engineering design 36 A. 3.1 SDH network throughout the end 27000km hypothetical error performance reference channel 36 A. Long-term indicators 3.2 digital channel 36 A. Short-term indicators 3.3 digital channel 36 A. Digital error indicators paragraph 4 domestic SDH engineering 37 A. Long-term Target 4.1 digital section 37 A. 4.2 Digital current short-term indicators section 37 A. 5 to ITU-TG. 829 and M. 2101-based engineering design domestic SDH multiplex section error indicators 37 A. Long-term Target 5.1 MSP 37 A. 5.2 Multiplexing section 38 of the short-term indicators Error performance Annex B (informative) regenerator section 39 B. 1 stage regeneration BER performance and light-noise ratio 39 B. 2 regenerator section error indicators 39 B. 3 stage regeneration error indicators for occasions 39 Annex C (informative) receiver sensitivity deterioration amount and explain more than 40 degrees C. 1 Overview 40 C. 2 receiver sensitivity deterioration amount (Y) 40 C. 3 receiver sensitivity margin (X) 40 C. 4 illustrates on EOLa, EOLITU, BOL, X and Y 40

Figure 1 China's domestic standards longest HRP 2

Figure 2 SDH digital section and multiplex section 2

Figure 3 STM-N frame structure 5

Figure 4 STM-1 Section Overhead 6

Figure 5 STM-4 section overhead 6

Figure 6 STM-16 overhead paragraph 7

Figure 7 STM-64 overhead paragraph 7

Figure 8 STM-256 section overhead 8

Figure 9 K4 multiframe structure (b1) of 15 bits

Figure 10 Basic multiplexing structure 16

11 System components 17 12 position optical interface (optical amplifiers) 18 13 optical interface position (no light amplifier) \u200b\u200b18

Figure 14 STM-1/STM-4/STM-16/64 optical transmission signal eye mask 19

Figure 15 CMI code binary "0" pulse mask 22

Figure 16 CMI code binary "1" pulse template 23

Figure 17 STM-1 interface points eye mask 23

Figure C. 1 About EOLa, EOLITU, BOL, X and Y illustrate 41

Table 1 SDH bit rates 5

Table 2 J0 16-byte frame format 8

Table 3 S1 byte b5 ~ b8 10 bits defined

Table 4 Simplified SOH functional interface 10

Table 5 C2 byte code mapped 12