【正文】 9) IEEE Std （ 1998）介質(zhì)訪(fǎng)問(wèn)控制（ MAC）橋協(xié)議 10) IEEE （ 1999）局域網(wǎng)二層 QoS/CoS 協(xié)議 11) IETF RFC 3435(20xx）媒體網(wǎng)關(guān)控制協(xié)議 (MGCP) 12)DXJS102120xx中國(guó)電信集團(tuán)企業(yè)標(biāo)準(zhǔn)《中國(guó)電信光纖到戶(hù)（ FTTH）工程設(shè)計(jì)規(guī)范（暫行）》 3 術(shù)語(yǔ)和定義 1) 無(wú)源光網(wǎng)絡(luò)：由光纖、光分路器、光連接器等無(wú)源光器件組成的點(diǎn)對(duì)多點(diǎn)的 網(wǎng)絡(luò)，簡(jiǎn)稱(chēng) PON。 為了充分發(fā)揮無(wú)源光網(wǎng)絡(luò) (PON)的效益，便于日常維護(hù)，在網(wǎng)絡(luò)建設(shè)的同時(shí)應(yīng)建立相應(yīng)的維護(hù)管理系統(tǒng)。 無(wú)源光網(wǎng)絡(luò)中的光纜線(xiàn)路設(shè)計(jì)應(yīng)統(tǒng)籌考慮，網(wǎng)絡(luò)應(yīng)具有安全性、靈活性，應(yīng)與通信業(yè)務(wù)的發(fā)展相適應(yīng)，并適度超前。 本規(guī)范規(guī)定了 PON 系統(tǒng)的架構(gòu)、無(wú)源光器件的性能指標(biāo)要求，并對(duì) ODN的拓?fù)浣Y(jié)構(gòu)，以及 ODN 設(shè)計(jì)原則等提出了要求和建議。 本規(guī)范作為 基于 EPON 技術(shù)的 光纖到戶(hù)（ FTTH）工程設(shè)計(jì)依據(jù)，適用于光纖到戶(hù) (FTTH)、光纖到桌面、光纖到辦公 室 (FTTO)等采用 PON技術(shù)的光纜線(xiàn)路的新建、擴(kuò)建、改建工程。湖北電信光纖到戶(hù)（ FTTH）工程設(shè)計(jì)規(guī)范（試行） 第 1 頁(yè) 共 41 頁(yè) 湖北電信光纖到戶(hù)（ FTTH）工程設(shè)計(jì)規(guī)范（試行） 湖北電信光纖到戶(hù)（ FTTH）工程設(shè)計(jì)規(guī)范（試行） 第 2 頁(yè) 共 41 頁(yè) 目 錄 前 言 ...........................................................................................................................................................................4 1 總 則 ......................................................................................................................................................................5 2 引用標(biāo)準(zhǔn) ...............................................................................................................................................................5 3 術(shù)語(yǔ)和定義 ...........................................................................................................................................................6 4 縮略語(yǔ) ....................................................................................................................................................................7 5 無(wú)源光網(wǎng)絡(luò)系統(tǒng)架構(gòu) .........................................................................................................................................9 網(wǎng)絡(luò)參考模型 ..............................................................................................................................................9 PON 系統(tǒng)對(duì) ODN 的基本要求 ................................................................................................................ 10 PON 系統(tǒng)的保護(hù) ....................................................................................................................................... 11 光分配網(wǎng) (ODN)組成和基本功能 .......................................................................................................... 12 6 EPON 設(shè)備配置要求 ........................................................................................................................................ 13 業(yè)務(wù)承載能力 ........................................................................................................................................... 13 設(shè)備接口要求 ........................................................................................................................................... 13 業(yè)務(wù)承載方式和性能指標(biāo)要求 ............................................................................................................ 14 功能要求 .................................................................................................................................................... 16 網(wǎng)管要求 .................................................................................................................................................... 18 環(huán)境要求 .................................................................................................................................................... 20 電源要求 .................................................................................................................................................... 20 7 無(wú)源光器件基本要求 ...................................................................................................................................... 21 無(wú)源光器件的選擇原則 ......................................................................................................................... 21 光纖光纜 .................................................................................................................................................... 21 8 ODN 拓?fù)浣Y(jié)構(gòu)及組網(wǎng)原則 ............................................................................................................................. 22 ODN 基本結(jié)構(gòu) ........................................................................................................................................... 22 ODN 的組網(wǎng)原則 ....................................................................................................................................... 23 9 設(shè)備安裝設(shè)計(jì) ................................................................................................................................................... 25 設(shè)備組網(wǎng)原則 ........................................................................................................................................... 25 容量測(cè)算 .................................................................................................................................................... 27 帶寬測(cè)算原則 ........................................................................................................................................... 27 VLAN 劃分原則 ......................................................................................................................................... 30 IP 地址規(guī)劃原則 ..................................................................................................................................... 30 OLT 設(shè)備安裝設(shè)計(jì) .................................................................................................................................. 30 機(jī)房位置選擇原則 .................................................................................................................................. 31 機(jī)房要求 .................................................................................................................................................... 31 機(jī)房裝修要求 ........................................................................................................................................... 32 ONU 設(shè)備的安裝設(shè)計(jì) .....................