I have a simple system and it worked fine for a year or so until it began to delay printing by as much as 30 minutes after I initiated the Print function on the computer. This was in April 2016, at tax time. Eventually it occasionally didn’t print at all until I had the idea to unplug the DSL phone line from the modem. Then I had unobstructed printing.
The DSL line plugs into a Siemens Speedstream 4100 Ethernet ADSL modem supplied by the ISP, AT&T. The modem is connected to a Router, Belkin model N750, Dual Band n+. The computer is an HP 520-1047F desktop which has no cables except for the power cable. The mouse and the keyboard are wireless. The printer, Brother model MFC-J6510DW is also communicating wirelessly. That’s everything.
As I said previously, everything worked fine for a while.
While I was typing this, the printer printed something I had sent to it about 45 minutes earlier.
Is there something AT&T could be doing to the signal that is locking up the router?