PoC(Push to Talk Over Cellular,无线一键通)技术是近段时间曝光率较高的新词汇,尤其伴随着摩托罗拉和索爱一些新机的发布,这项通过软件在手机上实现的新技术被描绘成可以让人们“像对讲机一样使用手机,并且只按下一个键就可与另外一个用户或一组用户通话”。并且还具有通话费用低廉优点,被美国Zelos Group的调查报告认为是“未来新一代手机的两大热点”之一。事实也是如此,最明显的例子就是在本年度的3GSM展会上,讨论的热点不是来自3G,而是众多厂商都不约而同地推出了带有这项特征功能的手机终端产品。同时,这项功能虽然在手机上的称呼上各有不同,如 PoC (Push to Talk Over Cellular, wireless push-to-talk) technology is a new term of high exposure in recent time, especially with the release of some new machines from Motorola and Sony Ericsson, the new technology that is implemented on the mobile phone through software is Portrayed as allowing people to “talk to another person or a group of users just by pressing a key, using the phone as an intercom.” And also has the advantages of low cost calls, the survey by the United States Zelos Group that is “one of the two hot spots in the next generation of mobile phones.” The fact is the same. The most obvious example is that at 3GSM this year, the hot topic of discussion is not 3G. Instead, many manufacturers are invariably launching handsets with this feature. At the same time, this feature although different in the phone call, such as