AT&T TR1909 - Manual (Page 10)

9
Tabletop installation
To return the bracket from the wall installation to tabletop use,
follow the instructions below.
2. Lift the handset and place it aside. On the telephone base, pull
out the handset tab and rotate it 180 degrees. Replace the
handset tab back to the grooves until it clicks into position.
1. Remove the telephone base from the wall mounting plate.
Unplug the telephone line cord from the telephone wall jack
and remove the cord from the slots under the telephone base.
5. Place the handset back on the telephone base.
Installation options