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所在平台: Udemy |
课程主页: https://www.udemy.com/course/voice-logic-a-5-day-journey-into-voice-technology-and-sip/
课程评论：没有评论
课程名称：语音逻辑：深入语音技术与SIP的5天之旅 课程概述：本课程介绍语音技术和VoIP（语音互联网协议）。讲解语音技术、VoIP、SIP及相关术语的定义。阐述VoIP与传统电话服务的区别，并回顾语音技术和VoIP的发展历史。探讨VoIP的优点，如节省成本、灵活性、可扩展性和集成度，同时也分析使用VoIP所面临的挑战，包括带宽、安全性、兼容性和质量问题。 课程中深入解析VoIP的协议和标准，解释VoIP如何工作的技术细节，例如语音数据包在互联网上的传输。介绍支持VoIP的主要协议和标准，如TCP、UDP、RTP、SIP和SDP等。 重点讲解SIP的定义、在VoIP及多媒体通信中的重要性，以及使用SIP的优缺点。列举SIP应用及其功能。解释SIP的基本概念及组成部分，包括SIP地址、消息、会话、事务、对话等，并说明如何建立、修改和终止SIP会话。对比SIP和其他协议（如H.323）。 课程还将介绍SIP消息的类型和格式，包括请求和响应的目的与功能，SIP消息的格式结构（如开始行、首部和主体）以及常见SIP首部的示例。分析SIP服务器（如代理服务器、重定向服务器、注册服务器等）的角色与功能，说明SIP消息在不同服务器和终端之间的路由方式。 此外，将探讨SIP组件的识别与认证，定义SIP域和领域的概念，描述SIP地址或URI的格式和结构。解释SIP如何与其他网络协议和服务（如DNS、DHCP、NTP、RTP、RTCP、SDP）协同运作。 课程内容还涉及B2BUA和SIP中继的定义及其功能，呼叫流程的基本概念，信令与媒体在VoIP和多媒体会话中的区别，分析SIP的信令和媒体机制，以及常见呼叫流程场景，如呼叫分叉、转接、保持和恢复等。 最后，课程将介绍现代VoIP中的术语和组件，如媒体网关（GW）、会话边界控制器（SBC）和私人分支交换机（PBX），理解VoIP中的NAT问题及如何利用交互式连接建立（ICE）框架，学习媒体旁路的相关内容。 通过本课程，学员将全面了解语音技术及其应用，掌握VoIP和SIP的核心知识与实际操作技能。
Introduction to voice technology and VoIP. Define voice technology, VoIP, SIP and other related terms. Explain the difference between VoIP and traditional phone services. Give an overview of the history and evolution of voice technology and VoIP.Benefits and challenges of VoIP. Discuss the advantages of using VoIP, such as cost savings, flexibility, scalability and integration. Identify the challenges of using VoIP, such as bandwidth, security, compatibility and quality.VoIP protocols and standards. Explain the technical aspects of how VoIP works, such as the transmission of voice packets over the internet. Describe the main protocols and standards that enable VoIP, such as TCP,UDP, RTP, SIP, SDP and others.What is SIP and why is it important? Define SIP and explain its role and function in VoIP and multimedia communication. Describe the benefits and challenges of using SIP. Provide some examples of SIP applications and features.How does SIP work? Explain the basic concepts and components of SIP, such as SIP address, SIP message, SIP session, SIP transaction, SIP dialog, etc. Illustrate the process of establishing, modifying and terminating a SIP session. Compare and contrast SIP with other protocols, such as H.323.What are the types and formats of SIP messages? Identify the two types of SIP messages: requests and responses. Explain the purpose and function of each type of SIP request and response. Describe the format and structure of a SIP message, including the start line, headers and body. Provide some examples of common SIP headers and their values.Explain the role and function of different types of SIP servers, such as proxy server, redirect server, registrar server, etc. Illustrate how SIP messages are routed between different SIP servers and endpoints.How are SIP components identified and authenticated? Define and explain the concept and function of SIP domains and realms. Describe the format and structure of a SIP address or URI.Explain how SIP works with other network protocols and services that are essential for VoIP and multimedia communication, such as DNS, DHCP, NTP, RTP, RTCP, SDP, etc.Discover B2BUA & SIP Trunks.Define and explain the concept and function of call flow in SIP. Describe the difference between signaling and media in VoIP and multimedia sessions. Explain the benefits and challenges of analyzing call flow in SIP.Explain the process and mechanism of signaling in SIP, such as SIP requests, responses, transactions, dialogs and sessions. Describe the types and formats of SIP requests and responses, such as INVITE, ACK, BYE, OK, etc. Illustrate the basic call flow for a SIP session establishment, modification and termination.Explain the process and mechanism of media in SIP, such as RTP, RTCP, SDP, codecs, etc.Discuss some common call flow scenarios in SIP, such as call forking, call transfer, call hold, call resume, etc. Describe the purpose and function of each scenario. Illustrate the message sequence and ladder diagram for each scenario. Compare and contrast the signaling and media aspects of each scenario.Discover modern terminologies & Components used in VoIP like Media Gateways (GW), Session Border Controllers (SBC) and Private Branch Exchange (PBX).Understand NAT Issue with VoIP and how Interactive Connectivity Establishment (ICE) Framework is used and Learn about Media Bypass.
