AT&T 915 - Manual (Page 13)

Temporary tone dialing
If you have dial pulse (rotary) service, you
can change from dial pulse to touch tone
dialing during a call by pressing TONE *.
All keys pressed after this will send touch
tone signals. The phone returns to dial
pulse when you hang up.
Handset volume
Slide the VOLUME control on the phone
to adjust the volume of what you hear
through the handset. Slide the control left
to decrease volume or right to increase
volume.
Ringer volume
Use the RINGER switch on the right side
of the phone to set the ringer volume to
OFF, LOW, MED or HIGH.
If you set the switch to OFF, this phone
will not ring when you have an incoming
call.
This phone has an extra loud ringer.
Set the switch to
HIGH, if you want to
use the extra loud ringer volume.
AUDIO ASSIST™
10
Some voices will sound louder and clearer
when you press
AUDIO ASSIST while
you are on a call. Press AUDIO ASSIST
again to turn the feature off. This feature
automatically turns off when you hang up.
You must press
AUDIO ASSIST every
time you want to use this feature.
Telephone operation Telephone operation