I have a Cisco 1841 in my Network which is acting as a Gateway. It is connected to the outside world on a low-speed serial interface (The Router has 2 low-speed serial interfaces, 1 ethernet and 1 VPN port). I always get a slow connection over the network to it. I can see the tracert response times are always large on that hop. Is there a way to upgrade that port to a higher speed or is that even the reason for the slow connection? Can it be configured differently to increase the response times?