It's the original setup done by Verizon 4 years ago. The splitter I assume is 1Ghz. It's always worked in the past but maybe it's starting to go wrong. I'll follow your suggestions though. Thanks.
I, also, had the same problem.....Unplugged the DVR for 30 seconds and plugged it back in.....Problem solved.(never though of re-setting the router, though.....lesson learned.)--"I'm an Analog guy in a Digital World!"