…showed first 75 words of 2040 total…

…showed last 75 words of 2040 total…e name implies it belongs to the ring topology and usually we use twisted pair cables . The transfer rate is either 4 Mbps or 16 Mbps . Looking ahead we can see that we are going to have a big revolution to the communications with high speed networks such as the ISDN (Integrated Services Digital Network ) which is in its first steps , high speed wireless networks and much more features like Video Conference , Video Telephony and many other .