Sony HIPATH 500 - Manual (Page 21)

Basic functions
21
Step by step
Switching to speakerphone mode
Prerequisite: You are conducting a call via the handset.
n \
Hold down the key and replace the handset. Then re-
lease the key.
if nec.
+
or
-
Set the call volume. Keep pressing the key until the
desired volume is set.
U.S. mode
If the country setting is set to U.S. (ask the service per-
sonnel), you do not have to hold down the loudspeaker
key when replacing the handset to switch to speaker-
phone mode.
n
Press the key shown.
]
Replace the handset. Proceed with your call.
if nec.
+
or
-
Set the call volume. Keep pressing the key until the
desired volume is set.
Switching to the handset
Prerequisite: You are engaged in a call in speakerphone
mode.
^
and
[
Lift the handset. Proceed with your call.