第6章接入网应用 ●6.1IP分组多媒体通信 ●62行业应用 Dr Zhanqi Xu, access to him at: 202l/1/27 webxidian.edu. cn/zqxu, Xidian University
2021/1/27 1 第6章 接入网应用 ⚫6.2 行业应用 ⚫6.1 IP分组多媒体通信 Dr. Zhanqi XU, access to him at : web.xidian.edu.cn/zqxu, Xidian University
Multimedia communication Based on packet Network Architecture, Protocols, Progress O Overview ● Protocols(H.323&SP IP Telephone Architecture 202l/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University
2021/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University 2 ⚫ Overview ⚫ Protocols (H.323 & SIP) ⚫ IP Telephone Architecture MultiMedia Communication Based on Packet Network Architecture, Protocols, Progress
Overview ● Features Multimedia Communication(MMC)means more than one set of forms comprising still moving images, graphic, text, and sound are reproduced on an intelligent terminal iMplementation of MMC Transmission media Wireless( Radio, Microwave, Satellite, optical, .. Wired( Twisted Pair, Cable, Optic Fiber,) 202l/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University
2021/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University 3 ⚫Features Multimedia Communication (MMC) means more than one set of forms comprising still/moving images, graphic, text, and sound are reproduced on an intelligent terminal ⚫Implementation of MMC –Transmission media • Wireless ( Radio, Microwave, Satellite, optical, …) • Wired ( Twisted Pair, Cable, Optic Fiber,…) Overview
-Switching Circuit-switched( traditional CS, fast CS,...) Packet-switched (ATM, MPLS, Ethernet, FR oken ring, Token bus), X25,.) -Media processing Sampling(8Khz, 16Khz Coding( G.711 A/u-law for voice, Compressing /Decompressing(G723.1, G729A, for voice: H 261/H 263, JPEG ( Joint Photographic Experts Group), MPEG-4(Motion Picture Experts Group) for Video Storing, editing, 202l/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University
2021/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University 4 –Switching • Circuit-switched ( traditional CS, fast CS,…) • Packet-switched (ATM,MPLS , Ethernet, FR , Token ring, Token bus), X.25,…) –Media processing • Sampling ( 8Khz, 16Khz, …) • Coding( G.711 A/-law for voice, …) • Compressing / Decompressing ( G723.1, G729A, for voice; H.261/H.263, JPEG (Joint Photographic Experts Group) , MPEG-4 (Motion Picture Experts Group) for Video • Storing , editing,…
OMMC network architecture PSTN Computer 5/N0.7,N0.1 PSTN Integrated CATV Telephone Access Fiber/ Cable modem Cable XDSL CO Coppey/optical LyLu PSTN Tel Cable moder 會 Cable tel IP Tel IP Tel LAN LAN LAN 202l/1/27 Dr. Zhanqi XU, National Key lab on ISN, Xidian University
2021/1/27 Dr. Zhanqi XU, National Key Lab on ISN, Xidian University 5 ⚫MMC network architecture Integrated Access Computer Net CATV Modem V5/ No.7, No.1 PSTN xDSL CO. LAN LAN Copper/Optical LAN PSTN Telephone Fiber/ Cable Cable IP Tel Cable Tel Cable Modem IP Tel PSTN Tel