There were more advances than true innovations in the VoIP world in 2009. That's because some of the most important developments had more to do with commercial and political maneuvers than with technical creativity. Still, such maneuvers often helped spread the benefits of VoIP as much as did technical innovation. And collectively, the advances brought some already-evident trends into clearer focus. A key such trend is the increasing integration of voice with other applications and services. Another is the intensifying interest in HD voice. A third is the growing interconnection of VoIP services, in part in response to the possibilities that end-to-end HD voice offers. With such trends as background, here, in no particular order, are our top 25 VoIP advances of 2009.
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VoIP and cellular services alike can do a lot of things that conventional landline services can't. For example, they can transmit both voice and various other kinds of data between phones or other end devices. That capability makes possible all kinds interesting combined services, often starting with or based on the ability to detect users' presence – that is, their availability to receive calls or respond to messages.
Once those services encounter the traditional phone network, or PSTN (public switched telephone network), though, they hit a roadblock. The PSTN can transmit only voice calls and limited kinds of call-related data. That means presence and other information, not to mention the various kinds of video or other data streams themselves, can't get through. A new deal between XConnect and the GSM Association, or GSMA, attempts to circumvent that roadblock.
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