AT&T 250 User Manual page 7

INSTALLATION
Wall Installation
1
Plug one end of the line cord into the telephone line jack.
Mounting area
Line cord
Telephone
line jack
2
Feed the line cord into the channel and wind it around and out of the
mounting area as shown.
3 Connect the other end to a wall jack.
4
Mount the phone on the wall as shown, then continue with the steps in
"For Table/Desk and Wall Installation" on page 7.
6
Channel
Modular
telephone
wall jack