AT&T SYSTEM 25 User Manual page 25

With an HFU (Continued)
HFAI, Using Voice Terminals
Ending an Inside Call
1 If the calling party hangs up, you will be
automatically disconnected. Otherwise, press
on the HFU.
S P E A K E R P H O N E
The green lights next to
SPEAKERPHONE
and turn off.
MICROPHONE
Turning Off the HFAI Feature
1 Press
—
The light next to this button turns off.
22