1) SDP
会议描述协议
2) session description protocol
会话描述协议
3) SDP
会话描述协议
1.
Firstly outlines the origin,working mechanism and types of NAT;then analyzes the problem of NAT traversal in P2PSIP system;and proposes an STUN+TURN scheme based on the research of several NAT traversal methods,while describes it in detail on the foundation of extension of SDP.
首先概述了NAT的由来、工作原理及NAT的各种常见类型;然后阐述了系统中信令穿越NAT和媒体流穿越NAT所面临的问题;随后分析了当前各种NAT穿越方法的优缺点,在此基础下提出一种P2PSIP结点穿越NAT的方案:STUN+TURN方式,并在扩展会话描述协议SDP的基础上对该方案进行了详细设计。
2.
By importing the Simple Traversal of UDP through NAT(STUN) protocol, the mapped relation of IP addresses and ports are obtained, and the content in SIP and Session Description Protocol(SDP)messages are changed to ensure the communication connection, and then to realize the NAT traversal.
该方案通过引入UDP对NAT的简单穿透(STUN)协议,获得IP地址和端口的映射绑定关系,修改SIP和会话描述协议(SDP)消息中的内容来保证通信连接,从而实现了对NAT的穿透。
4) protocol description
协议描述
1.
The idea of hierarchy protocol description is proposed.
移动IPv6协议是一种庞大的分布式协议 ,这为协议描述和测试生成带来了困难 。
2.
However, it is less to model and evaluate the field communication systems by Petri Nets, and there is no example about both realizing field communication and evaluating its system performance by the protocol description of Petri Nets.
但目前采用Petri网对现场通信系统建模和评价还很少,通过Petri网协议描述实现现场通信和评价系统性能双重功能更无先例。
5) protocol specification
协议描述
1.
The basic concepts of protocol specification and verification are presented briefly, and the basic ideas are given by means of examples with respect to the construction of specifications for implementation and protocol verification.
简要说明了协议描述和验证的基本概念，示例性地介绍构造实现描述和协议验证的基本思想，最后以Ｐｅｔｒｉ网形式给出了ＡＢ协议一例。
6) protocol description unit
协议描述单元
补充资料：太平洋地区标准会议标准(见太平洋地区标准会议)
太平洋地区标准会议标准(见太平洋地区标准会议)
standards of PASC: see Pacific Area Standards Congress; PASC
Ta iPingyang Diqu Bioozhun Hu呼ib沁幻Zhun太平洋地区标准会议标准(s切md田心sofR巧C)见太平洋地区标准会议。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条