[it認(rèn)證]cablemodem交流-wenkub
2023-02-28 23:56:49 本頁(yè)面
【正文】 c. 3 話音 企業(yè)用戶 VPN服務(wù) 視頻 電子商務(wù) 新一代服務(wù)商多業(yè)務(wù) nVOD (準(zhǔn) VOD) 視頻會(huì)議 遠(yuǎn)程教學(xué) 如何適應(yīng)新的業(yè)務(wù)？ 169。 169。 2022, Star Systems, Inc. 4 傳統(tǒng)的最后一公里接入技術(shù)（窄帶） ? PSTN 56Kbps ? ISDN 2B channels 128Kbps ? Wireless GSM/TDMA/CDMA/CDPD Application bandwidth requirements grow over time, legacy last mile access methods may not be adequate in the near future 169。 2022, Star Systems, Inc. 議題 ? 介紹 ? 相關(guān)技術(shù) ? 解決方案 ? 相關(guān)接入 ? 成功案例 169。 2022, Star Systems, Inc. 12 169。 2022, Star Systems, Inc. 16 數(shù)字調(diào)制技術(shù) QPSK QAM16 QAM64 Q I Q I Q I 01 11 00 10 169。 2022, Star Systems, Inc. 20 下行載噪比 Downstream Channel EIA CH 111, MHz PAL Video Signal CH 114, MHz CM needs 15 to +15 dBmV. QAM64 needs 30 dB C/N QAM256 needs 35 dB C/N Adjust QAM signal to 010 dB below peak video levels 169。 2022, Star Systems, Inc. 24 CM1 CM2 CM1 CM3 CM4 CM5 Time, t Frequency (MHz) 42 5 Modulation: QPSK / QAM16 Symbol Rates: Msps Channel Bandwidth: MHz Upstream FDMA/TDMA 169。 2022, Star Systems, Inc. 28 uBR7246 Cat 2912 節(jié)目源 uBR924B uBR924A RF US DS Up stream fr: 40MHz FE DHCP、TFTP、 CNR Server HFC網(wǎng)絡(luò) 上變頻器 C8U 混 合 器 …... 鎖定參數(shù) 時(shí)間同步 配置文件 獲得地址 數(shù)據(jù)傳輸 CM工作流程 169。 2022, Star Systems, Inc. 議題 ? 介紹 ? 相關(guān)技術(shù) ? 解決方案 ? 相關(guān)接入 成功案例 169。 2022, Star Systems, Inc. 36 Tier 3: Small MSO/ISP Tier 1: Large MSO/ISPs 性能及密度 MSO Network Size Small Large Medium Robust Functionality uBR7xxx uBR7246 uBR7223 Tier 1 and 2: Medium/Large MSO/ISPs uBR7200 產(chǎn)品定位 169。 2022, Star Systems, Inc. 40 前端設(shè)備特性 ? New Product Leadership World Class BGP Routing Full DOCSIS Compliance RF Ruggedized Chassis Modular Rack Mount Package ? Solid and Proven Foundation Standard Cisco 7200 Base Cisco IOS Software Foundation ? Best In Class Support Training, Consulting, CCIE 24x7x365 Multilevel Support uBR 7246 Universal Broadband Router Voice Data Video 169。 2022, Star Systems, Inc. 44 uBR7223 ? Smaller version of uBR7246 ? Two modem card slots, 1 port adapter ? Targeted at small MSOs, ISPs, Institutional ? Designed to be price petitive at low end 169。 7120 ? Compact size: 2 Rack Units uBR7100 特點(diǎn) 1. Low cost－ 價(jià)格低 2. Low maintenance – 最小的固定配置 3. Low learning curve – 容易學(xué)習(xí) runs IOS, based on other Cisco products 4. High interoperability – DOCSIS amp。 2022, Star Systems, Inc. 48 uBR7246VXR 優(yōu)勢(shì) ? Higher performance ? Same familiar form factor as uBR7246 ? Enables large scale IP telephony solutions with support for legacy fax and analog modem calls ? Enables video on demand solutions 169。 DOCSIS (Annex B) uBRMC16S 6 1 Software amp。 2022, Star Systems, Inc. 51 產(chǎn)品線 Cable Modem 合作伙伴 Reference Partners
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