说明：  　　Internet盛行的今天，网上聊天已成为一种时尚。同时，各单位已建成了自己的局域网；能否在局域网上实现聊天呢？可以，网上到处都有这种工具。当然，我们可以拥有自己版权的聊天工具。
(popularity of the Internet, online chat has become a trend. Meanwhile, the unit has completed the construction of its own LAN; The LAN can achieve chatting? Can online tool everywhere. Of course, we can have its own copyright chat tools.)