AT&T E560-2 - Manual (Page 15)

Belt clip & optional headset
Install belt clip as shown below if desired.
For hands-free telephone conversations, use any industry standard
2.5 mm headset (purchased separately). For best results, use an
AT&T 2.5 mm headset.
11
Snap belt clip into notches on
side of handset. Rotate and pull
to remove.
Plug 2.5 mm headset
into jack on side of
handset (beneath
small rubber cap).