: 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.
Ethernet Cabling Pin-Out. On the back of each keystone jack is a two-sided connector that is labeled with similar colors. In. the keystone jack we're using, the label has sets of colors labeled A and B. This refers to the two. main wiring standards used in Ethernet, 568A and 568B.