: not prepared ahead of time : made or done without preparation. 1  Two of my friends came by unexpectedly, and we had an impromptu little party in my kitchen. 2  He made an impromptu speech about honor and responsibility.
Go to the existing phone jack and unscrew the cover of the jack with the screwdriver. Locate the four wires and attach each wire to its matching color. Go to the location of the new phone jack. Attach the telephone wire to the terminals inside the phone jack. They are named red, green, yellow, and black.
Cable Jacks, Data Jacks, and Phone Jacks are the only switchplates that come with the appropriate hardware. Check out this video for a brief explanation on phone jack switch plates. Check out this video for a brief explanation of the Data (Ethernet) switch plate cover.