It was originally developed as a framework to support instant messaging and presence applications within enterprise environments.

它最初作为一个框架研发，以支持企业环境内的实时消息传递和联机状态(presence)应用程序。

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They will offer mobile VoIP as a premium service with additional features such as instant messaging and “presence” information.

因为到那时，他们会把移动网络语音通讯作为一个附加收费业务，如即时短信和“现场”信息一样提供给消费者。

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The services defined by OMA are built on top of IMS infrastructure, such as Instant Messaging (IM), Presence service, and Group Management service.

oma定义的服务构建于IMS基础设施之上，如即时消息传递(Instant Messaging, IM)、在线状态服务和组管理服务等。

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The second phase, which is scheduled for the second half of 2011, will add in the remaining Skype features, including video, instant messaging and presence (an indicator of whether a person is available for a conversation).

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As a result, operators can more effectively ensure a carrier-grade quality of experience for end users of High Definition voice and video, Web conferencing, instant messaging and presence, and other broadband-intensive mobile applications that go beyond the reliability of Skype, Apple FaceTime and other services suited for consumers but inadequate for the rigors of enterprise use.

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