【正文】 ..............................................79 ONU 認(rèn)證功能 ...................................................................80 ONU 的靜默機(jī)制 .................................................................83 用戶認(rèn)證及用戶接入線路（端口）標(biāo)識(shí).............................................83 廣播安全.......................................................................84 其他安全功能...................................................................84 異常發(fā)光 ONU 檢測與處理功能.....................................................8412 組播功能 ...........................................................................85 組播實(shí)現(xiàn)方式...................................................................85 組播協(xié)議.......................................................................86 分布式 IGMP/MLD 方式功能要求....................................................86 組播控制.......................................................................89 組播性能要求...................................................................96 組播相關(guān)的擴(kuò)展 OAM 功能要求.....................................................96 10GEPON 和 1GEPON 的組播共存 ..................................................9713 系統(tǒng)保護(hù) ...........................................................................97 光鏈路保護(hù)倒換功能.............................................................97 設(shè)備主控板 1+1 冗余保護(hù)........................................................103 OLT 上聯(lián)口雙歸屬保護(hù) ..........................................................103 配置恢復(fù)功能..................................................................103 電源冗余保護(hù)功能..............................................................10314 光鏈路測量和診斷功能 ..............................................................104 總體要求......................................................................104 OLT 光收發(fā)機(jī)參數(shù)測量 ..........................................................104 ONU 的光收發(fā)機(jī)參數(shù)測量 ........................................................104 ONU 的光收發(fā)機(jī)參數(shù)越限告警 ....................................................10515 ONU 軟件升級(jí) ......................................................................105 概述..........................................................................105 ONU 軟件下載的消息交互流程 ....................................................106 激活和 Commit 軟件鏡像的消息交互流程...........................................10716 告警 ..............................................................................10917 性能統(tǒng)計(jì) ..........................................................................116 OLT 和 ONU 的性能統(tǒng)計(jì)要求 ......................................................116 性能統(tǒng)計(jì)參數(shù)越限告警..........................................................11718 節(jié)能要求 ..........................................................................118 總體要求......................................................................118 ONU PON 口節(jié)能機(jī)制 ............................................................118 節(jié)能參數(shù)要求..................................................................12019 語音業(yè)務(wù)要求 ......................................................................12120 TDM 業(yè)務(wù)要求 ......................................................................121III / 21221 時(shí)間同步功能 ......................................................................12122 業(yè)務(wù)承載性能指標(biāo)要求 ..............................................................122 以太網(wǎng)/IP 業(yè)務(wù)性能指標(biāo)要求 ....................................................122 語音業(yè)務(wù)性能指標(biāo)要求..........................................................123 ARP/ND Proxy 功能要求 .........................................................124 電路仿真方式的 n64Kbit/s 數(shù)字連接及 E1 通道的性能指標(biāo) ..........................124 時(shí)鐘與時(shí)間同步性能指標(biāo)要求....................................................125 可靠性要求....................................................................12523 操作管理維護(hù)要求 ..................................................................125 OLT 的操作管理和維護(hù)功能要求 ..................................................125 網(wǎng)元管理系統(tǒng)（EMS）要求.......................................................126 ONU 的遠(yuǎn)程管理功能 ............................................................138 ONU 本地管理系統(tǒng)要求 ..........................................................14224 設(shè)備硬件要求 ......................................................................143 ONU 指示燈要求 ................................................................144 ONU 開關(guān)與按鈕 ................................................................145 Dying Gasp 及掉電保持時(shí)間 .....................................................145 設(shè)備標(biāo)簽......................................................................14525 其它要求 ..........................................................................145 環(huán)境要求......................................................................145 電源要求......................................................................146 電氣安全要求..................................................................146附　錄　 A （規(guī)范性附錄） 1000BASEPX20+物理媒質(zhì)相關(guān)（PMD）子層要求...................148 1000BASEPX20+類型定義 ...........................................................148 PMD 功能規(guī)范 .....................................................................149 （1000BASEPX20+）D 和（1000BASEPX20+）U 收發(fā)器 PMD 到 MDI 的光特性 ..............149 1000BASEPX20+收發(fā)器在 TP1 到 TP4 點(diǎn)的抖動(dòng)（參考性規(guī)定） ...........................152附　錄　 B （規(guī)范性附錄） EPON 系統(tǒng) LLID 工作模式相關(guān)要求 ..............................153 EPON 系統(tǒng) LLID 工作模式的基本要求 .................................................153 EPON 系統(tǒng) LLID 工作模式協(xié)商過程 ...................................................153附　錄　 C （規(guī)范性附錄） 擴(kuò)展 OAMPDU 中操作對(duì)象的實(shí)例索引 TLV.........................156 概述 .............................................................................156 操作對(duì)象實(shí)例索引 TLV 的格式 .......................................................156 操作對(duì)象實(shí)例索引 TLV 中的 LEAF 值 ..................................................156 ONU 端口編號(hào)實(shí)例索引 .............................................................157附　錄　 D （規(guī)范性附錄） OAM 管理對(duì)象 ................................................158 標(biāo)準(zhǔn)屬性 .........................