Sony SPP-A972 - Manual (Page 71)

Additional Information
Additional Information 71 US
Carrying the handset by the belt clip
You can hang the handset on the belt by attaching the belt clip to the
handset.
Attaching the belt clip
Press the belt clip to the handset.
Make sure that the side tabs click
and go into the holes on the sides of
the handset.
Note
To prevent the handset from dropping, make sure that each tab is completely
inserted.
Detaching the belt clip
While pressing the back of the belt
clip, pull the sides one by one until
the tabs come off from the holes.
Note
Remove the belt clip carefully to avoid breaking your fingernails.
Using the headset
You can talk on handset without using your hands by
connecting Sony TL-HD1 headset (optional) to the
I
(HEADSET) jack on the handset.