华为sip学习文档下载

第1章 SIP协议总体概述............................................................................................................1 1.1 SIP协议定义..........................................................................................................................1 1.2 SIP协议支持多媒体通信的五个方面......................................................................................1 1.3 SIP协议优点..........................................................................................................................2 第2章 SIP协议主要概念模型....................................................................................................3 2.1 实体模型概述........................................................................................................................3 2.2 相关概念................................................................................................................................4 第3章 SIP协议主要消息............................................................................................................6 3.1 SIP消息分类..........................................................................................................................6 3.2 SIP消息结构..........................................................................................................................6 3.3 消息格式................................................................................................................................6 3.3.1 请求消息格式..............................................................................................................6 3.3.2 响应消息格式..............................................................................................................8 第4章 SIP协议主要响应码......................................................................................................11 4.1 响应码分类..........................................................................................................................11 4.2 1xx类消息............................................................................................................................11 4.3 2xx类消息............................................................................................................................12 4.4 3xx类消息............................................................................................................................12 4.5 4xx类消息............................................................................................................................12 4.6 5xx类消息............................................................................................................................14 4.7 6xx类消息............................................................................................................................15 第5章 SIP协议主要流程..........................................................................................................16 5.1 呼叫模型概述......................................................................................................................16 5.2 基本呼叫建立流程...............................................................................................................17 5.3 基本呼叫拆除流程...............................................................................................................18 5.4 经过代理的呼叫建立流程....................................................................................................19 5.5 经过代理的呼叫拆除流程....................................................................................................20 第6章 SIP协议在软交换SoftX3000的实际应用举例...............................................................22 6.1 SIP用户局内互通组网说明..................................................................................................22 6.2 SIP协议在软交换SoftX3000流程图....................................................................................22 6.3 对应主要消息说明...............................................................................................................24 6.3.1 INVITE......................................................................................................................24 6.3.2 100 TRYING.............................................................................................................26 6.3.3 407 Proxy Authentication.........................................................................................27 6.3.4 ACK..........................................................................................................................28 6.3.5 INVITE......................................................................................................................29 6.3.6 100 TRYING.............................................................................................................31 6.3.7 INVITE......................................................................................................................32 6.3.8 180 RINGING...........................................................................................................34 6.3.9 200 OK.....................................................................................................................35 6.3.10 ACK........................................................................................................................36 6.3.11 OPTION..................................................................................................................37 6.3.12 BYE........................................................................................................................38

mgcp呼叫流程文档

This section shows and describes a call flow for a successful call using the Cisco ATA and MGCP.This section shows and describes a call flow for a successful call using the Cisco ATA and MGCP.This section shows and describes a call flow for a successful call using the Cisco ATA and MGCP.This section shows and describes a call flow for a successful call using the Cisco ATA and MGCP.

中国VoIP发展研究报告

VoIP并不是一项新技术，早在2000年前后，国内的电信运 营商开始提供以H.323方式为主的VoIP业务。那时的VoIP主要针 对长途电话服务，将传统PSTN的长途接续转化成IP连接，由此 降低资费。而2004年以来，随着国内宽带接入的不断普及和宽 带接入资费的不断降低，基于SIP的VoBB开始成为应用的主流， 由此形成了对传统话音业务的严重威胁。

RTP协议 PDF 资料

RTP 为交互式音频、视频等具有实时特性的数据提供端到端的传送服务。在IP 网络上，一般是在UDP 之上运行RTP 协议。