现在,出现了一种有新意的小型ISDN路由器,它就是DigiInternational的Retoura TouchRouter。它的特别之处在于有两个RS-232C串行端口,允许把一个或两个模拟调制解调器连接到路由器上。 这种双线的Retoura型号不太常见。大多数的路由器厂商出售单线路由器,将其用做大型路由器的远程办公室客户机。主机路由器通常至少有四到八条线路。如果某个远程办公室的数据通信量大到超出单线路的承受量时,我们就不得不付钱购买昂贵的 Now there is a new and innovative small ISDN router, which is DigiInternational’s Retoura TouchRouter. Its special feature is that there are two RS-232C serial ports, allowing one or two analog modems to be connected to the router. This two-lane Retoura model is less common. Most router vendors sell single line routers and use them as remote office clients for large routers. Host routers usually have at least four to eight lines. If data traffic at a remote office is large enough to exceed the capacity of a single line, we have to pay for expensive