【正文】 or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. 目錄 6 附錄 1 概述 2 注冊流程 3 基本呼叫 5 IP 短消息 4 SRVCC Page 29 Slide title :3235pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :2022pt Bullets level 25: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Top right corner for fieldmark， customer or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. 注冊流程 ? IP短消息是需要 核心 網(wǎng)引入 網(wǎng)元 IPSMGW來支持，并且需要 VoLTE終端在 IP_SM_GW上進行注冊后，才能發(fā)起 IP短消息業(yè)務(wù) . ? 因為注冊消息都是 SIP請求和響應(yīng)消息，因此都承載在 QCI5之上，在空口能看到的 SIP消息有 2條：用來指示 UE支持 IP短消息業(yè)務(wù)的 Register請求消息，和用來對其進行確認的 200 OK響應(yīng)消息 . ? IP短消息業(yè)務(wù)不牽涉 QCI1等專有承載 . Page 30 Slide title :3235pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :2022pt Bullets level 25: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Top right corner for fieldmark， customer or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. IP短消息流程 ? 從 UU口來看， IP短消息流程包括 4步： 造 MESSAGE請求發(fā)送給 PCSCF(proxycall session control function)， PCSCF通過頭部構(gòu)造后轉(zhuǎn)發(fā)給 SCSCF( servingcall session control function). MESSAGE后將消息內(nèi)容轉(zhuǎn)發(fā)到 SMSC短消息中心，并且回復 202 Accept響應(yīng) . SMSC短消息中心收到短信內(nèi)容后，構(gòu)造 MESSAGE請求給 UE，指示短消息發(fā)送成功 . 200 OK給 IPSMGW確認 . Page 31 Slide title :3235pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :2022pt Bullets level 25: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Top right corner for fieldmark， customer or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. 實例 ? IP短消息實例及關(guān)鍵信元： Page 32 Slide title :3235pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :2022pt Bullets level 25: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Top right corner for fieldmark， customer or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. 目錄 5 IP 短消息 1 概述 2 注冊流程 3 基本呼叫 6 附錄 4 SRVCC Page 33 Slide title :3235pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :2022pt Bullets level 25: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Top right corner for fieldmark， customer or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. CSFB VoLTE 選擇 ? 支持 CSFB或 VoLTE的 UE在選擇 EUTRAN或 UTRAN、 GREAN駐留時，通過 Attach Request消息中的下列字段來進行判斷和選擇： A) UE39。s usage setting (1) 該字段為 0，表明是 Voice centric. (2) 該 字段 為 1， 表明 是 Data centric. B) Voice domain preference for EUTRAN (1) 該 字段為 0，表明是 CS voice only . (2) 該 字段為 1，表 明是 IMS PS voice only (3) 該 字段為 2，表明是 CS voice preferred, IMS PS voice as secondary. (4) 該 字段為 3，表明是 IMS PS voice preferred, CS Voice as secondary. ? 本頁流程圖為當 UE能力為 “prefer IMS PS Voice with CS Voice as secondary”時， UE進行聯(lián)合注冊和網(wǎng)絡(luò)選擇行為。 Page 34 Slide title :3235pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :2022pt Bullets level 25: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Top right corner for fieldmark， customer or partner logotypes. The following nine groups of colors are an example of how our design colors can be used， please take note that you should only use one design color group per slide. For specific usage details， refer to the “Typesetting Standard”. 附錄 – VoLTE網(wǎng)絡(luò)到 2/3G網(wǎng)絡(luò)的語音呼叫 TMGW1 TMGW2 Other Domain I/S CSCF 1 PCSCF/ SBC 1 4G Network 2G/3G Network I/S CSCF 2 PCSCF/ SBC 2 4G Network TMSS MGCF 2 HLR/HSS/UPCCENS/IMSHSS 2 STP1 HLR/HSS/UPCCENS/IMSHSS 1 2G/3G Network S/P GW GGSN MME/SGSN