|Thanks for the CHEERS. |
".......D-link router which has a phone type connector"
You probably have a DSL or ADSL internet connection.
You have either a router that is connected to a separate high speed modem, or a combo router / high speed modem (standalone routers do not have a telephone jack).
I have a ADSL internet connection .
Your DSL or ADSL internet connection reliability depends directly on the amount of electric and electronic noise that is being picked up on the phone line between where the high speed modem is and the nearest telephone exchange, and on how far away the telephone exchange is.
I have frequent connection speed problems because of line noise.
A high speed modem of any type usually does NOT reset itself to a faster connection speed after whatever caused a poor connection speed has gone away.
When your connection speed becomes poor, you need to restart your high speed modem, or your combo router / high speed modem.
If it has a switch, turn it off, turn it on.
If it doesn't have a switch, unplug the DC power cord from the device by pulling on it's plug, not the cord, plug it back in.
Wait a short time until the leds on the front of the device indicate you have a connection to the internet.
Your connection speed will then be much better, if whatever caused the problem has gone away. .