Today, we'll wrap up our summer series on the evolutionary history behind unified communications and collaboration (UC&C) with a quick topical recap, some analysis of what brought each of the five elements into the UC&C portfolio, and a brief look at what we expect to be the most dynamic factors affecting UC&C in the coming year.
We started our series looking at how dial-up Internet access changed the PSTN engineering rules for access, leading to a softswitch architecture employingVoIPprotocols to offload remote accessserver从语音网到数据网，将第一VoIP“木马”到PSTN业务。在PSTN数据的统治也为移动核心网络的工程规则。而曾经是主要架构考虑“话音第一，第二数据”的流量变化对组合在公共网络中的数据“第一数据，语音第二”建设的核心基础设施时改变了规则。正如我们期待，我们看到视频流量通过公共IP网络的数量不断增加这一相同模式的转变，以及规则将很快（如果没有的话）“视频第一，第二数据，语音第三。”我们预计在未来几年中，视频将取代语音通话作为首选的实时通信媒介。
RECAP:A Brief History of UC&C,Part One|Part Two|Part Three|Part Four|Part Five
接下来，我们看了看IP-PBX是如何应运而生，下面有类似需要融合语音和局域网上的数据流量。该IP-PBX的生命周期也开始在使用时，现成的硬件软件驱动的系统降低成本和加快发展的时候，更换硬件驱动的传统PBX基础设施。基于IP的协议，如XML，VXML和HTTP有助于使更多先进的功能，如呼叫中心集成基于标准的开发工作，再次提高了成本和功能的设计工作。基于服务器的架构也奠定了什么今天演变为基于云计算的“通信即服务”（CAAS），新兴的“统一通信即服务”，或UCaaS沿着基础。基于云的CaaS和UCaaS都非常适合谁想要或需要的UC＆C功能，但谁不具备的资源为基础的前提下，解决方案的小企业主，所以我们预测增强了对市场份额的竞争在中小企业市场。
Following the IP-PBX article, we discussed how unified messaging (UM), unified communications (UC) and the importance of SIP-based presence became the next logical step in the evolution of unified communications and collaboration. UM brought access to audio, text and (later) video messages from a phone or a PC, UC added the dimension of real time communications to UM, and SIP (session initiation protocol) became the key enabler as the standards-based protocol of choice to enable presence. We predict continued growth of UC features, especially as many of these "come standard" with premise-based VoIP systems and hosted VoIP services.
With the advent of comparatively cheaper broadband access and improvements in video compression, high-definition video and telepresence became part of the collaboration equation on the converged network. The ability to integrate video sessions with other应用like document sharing, presence management added to the value of video as an important part of many UC&C solutions. As telepresence solutions becomes less expensive, we expect to see increasing use of HD video communications across all market segments -- including B2B, C2C and B2C.
Finally, we wrapped up last time with insights on how fixed mobile convergence (FMC) has become integral to UC&C solutions, leveraging smartphones as the voice and mobile apps tool of choice for many business users. We believe that FMC may represent the biggest opportunity for change in the UC&C ecosystem because effective FMC integration is increasingly a key to successful UC&C deployment and because applications integration represents the biggest void in FMC, leaving plenty of room for improvement when it comes to integrating critical business applications and content access as part of FMC.
Next time, we'll return to our regular coverage, featuring a few news items we missed during our summer series on UC&C.
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A Brief History of UC&C, Part One: VoIP and the Softswitch
A Brief History of UC&C, Part Two: The IP PBX
A Brief History of UC&C, Part Three: UM, UC and SIP
A Brief History of UC&C, Part Five: Fixed Mobile Convergence