GBT51242-2017······1

1 總則······10

2 術(shù)語和符號(hào)······11

2.1 術(shù)語······11

2.2 符號(hào)······12

3 傳輸模型及功能要求······16

3.1 傳輸模型······16

3.2 系統(tǒng)速率與復(fù)用結(jié)構(gòu)······17

3.3 功能要求······19

4 網(wǎng)絡(luò)組織······20

4.1 規(guī)模容量的確定······20

4.2 網(wǎng)絡(luò)結(jié)構(gòu)及網(wǎng)絡(luò)組織······20

4.3 網(wǎng)絡(luò)安全及保護(hù)······21

5 傳輸系統(tǒng)設(shè)計(jì)······24

5.1 接口設(shè)計(jì)······24

5.2 中繼段設(shè)計(jì)······34

5.3 光纖類型與工作波長(zhǎng)選用······36

6 輔助系統(tǒng)······37

6.1 網(wǎng)絡(luò)管理系統(tǒng)······37

6.2 網(wǎng)同步設(shè)計(jì)······37

6.3 公務(wù)聯(lián)絡(luò)系統(tǒng)和輔助信道······38

7 通路組織和網(wǎng)絡(luò)互通······39

7.1 通路組織······39

7.2 光/電接口轉(zhuǎn)接······40

7.3 網(wǎng)絡(luò)互通······40

8 設(shè)備選型及設(shè)備配置······41

8.1 設(shè)備選型······41

8.2 設(shè)備配置······41

9 局站設(shè)備安裝及布線要求······43

9.1 局站通信系統(tǒng)······43

9.2 機(jī)房平面布置與設(shè)備排列······43

9.3 設(shè)備安裝······44

9.4 布線要求與線纜選擇······45

10 傳輸系統(tǒng)性能指標(biāo)······47

10.1 誤碼性能指標(biāo)······47

10.2 抖動(dòng)和漂移······51

10.3 以太網(wǎng)、RPR 、ATM性能指標(biāo)······61

10.4 可用性目標(biāo)······63

11 電源系統(tǒng)與接地······64

12 機(jī)房環(huán)境條件······66

13 維護(hù)工具及儀表配置······67

附錄A 光接口參數(shù)規(guī)范······68

附錄B SDH設(shè)備的抖動(dòng)性能······87

本規(guī)范用詞說明······94

引用標(biāo)準(zhǔn)名錄······95

附:條文說明······98

3 傳輸模型及功能要求······101

3.1 傳輸模型······101

3.2 系統(tǒng)速率與復(fù)用結(jié)構(gòu)······101

4 網(wǎng)絡(luò)組織······102

4.1 規(guī)模容量的確定······102

4.2 網(wǎng)絡(luò)結(jié)構(gòu)及網(wǎng)絡(luò)組織······102

4.3 網(wǎng)絡(luò)安全及保護(hù)······106

5 傳輸系統(tǒng)設(shè)計(jì)······107

5.1 接口設(shè)計(jì)······107

5.2 中繼段設(shè)計(jì)······108

6 輔助系統(tǒng)······111

6.1 網(wǎng)絡(luò)管理系統(tǒng)······111

6.2 網(wǎng)同步設(shè)計(jì)······111

6.3 公務(wù)聯(lián)絡(luò)系統(tǒng)和輔助信道······115

7 通路組織和網(wǎng)絡(luò)互通······116

7.2 光/電接口轉(zhuǎn)接······116

7.3 網(wǎng)絡(luò)互通······116

8 設(shè)備選型及設(shè)備配置······117

8.1 設(shè)備選型······117

8.2 設(shè)備配置······117

9 局站設(shè)備安裝及布線要求······118

9.2 機(jī)房平面布置與設(shè)備排列······118

9.3 設(shè)備安裝······118

9.4 布線要求與線纜選擇······118

10 傳輸系統(tǒng)性能指標(biāo)······124

10.1 誤碼性能指標(biāo)······124

10.3 以太網(wǎng)、RPR 、ATM性能指標(biāo)······126

11 電源系統(tǒng)與接地······129

12 機(jī)房環(huán)境條件······131