本文第一章论述了企业级即时消息系统的研究背景和意义。
Chapter describes the need and the background of developing enterprise Instant Messaging platform.
在对目前的即时消息系统进行了研究之后，提出了一种新的即时消息系统结构。
After doing research on present instant messaging system, author brings up a new architecture of instant messaging system.
目前约有三分之二的中国互联网用户使用腾讯的即时消息系统。该公司出售的Q币已被其它公司接受为支付手段，并被用来出售换取实体货币。
Tencent's messaging system is used by an estimated two-thirds of Chinese Internet users and its QQ Coins have been accepted as payment by other companies as well as sold for legal tender.
另一种可能性是使用即时消息传递客户机作为更友好的数据库系统界面，在这种系统中，参与信息交换的一方是数据库代理，而不是人。
Using an instant messaging client as a friendlier interface into database systems, where one of the parties in the exchange is a database agent rather than a human, is yet another possibility.
这类用户需要基本的办公功能(如电子邮件、即时消息传递、公司门户、浏览器以及对文件和打印系统的访问)来完成日常工作。
These users require basic office functionality, such as email, instant messaging, company portals, browsers, and access to file and print systems, to do their daily jobs.
Jabber是比JXTA简单得多的P 2 P系统；它的设计主要用于即时消息传递。
Jabber is a much simpler P2P system than JXTA; it is primarily designed for instant messaging.
通过介绍分析SIP技术优势以及存在和即时消息服务的实现机制，提出了如何在一般的SIP会议系统中实现存在和即时消息服务。
By analyzing technique advantage of the SIP and presence instant message's implementing, a functional model in the SIP conference for presence and instant messaging is presented.
通过介绍分析SIP技术优势以及存在和即时消息服务的实现机制，提出了如何在一般的SIP会议系统中实现存在和即时消息服务。
By analyzing technique advantage of the SIP and presence instant message's implementing, a functional model in the SIP conference for presence and instant messaging is presented.
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