AT&T SYSTEM 25 Manual page 61

Turning On the HFAI Feature
1 Press
The light next to this button turns on.
2 Press
The light next to this button turns on.
Answering an Inside Call
1 Listen for the beep that announces a call.
The light next to [HFAI/MIC] begins to flash.
2 Begin speaking.
NOTE:
press
The light next to this button will turn off.
When you want to resume your conversation with the caller,
press
The light next to this button will begin to flash.
Ending an Inside Call
If the caller hangs up, you will be automatically disconnected.
Otherwise, press
The light next to [HFAI/MIC] stops flashing.
Turning Off the HFAI Feature
1
Press
The light next to this button turns off.
2
Press
The light next to this button turns off.
2-48 Voice Terminal Features
.
[HFAI/MIC]
.
[AUTO ANS]
If you want to temporarily keep the caller from hearing you,
.
[HFAI/MIC]
again.
[HFAI/MIC]
[SPEAKER]
.
[AUTO ANS]
[HFAI/MIC]
.
.