If your internet is slow, you could always have Comcast sent a tech out to investigate. It could easily be a wiring or connection issue.
very helpfull, thanks. any recomendation to upgrade my technicolor 8305c?. I am a comcast suscriber, i am supost to get 200 mbps, but my internet is very slow.
That router doesn't support phone service. You would need to use a combo cable modem / eMTA with it or put the 8305 in to bridge mode and use a router with it. It will still support the phone service in bridge mode.