Sony SPP-933 - Manual (Page 26)

26 US Telephone Features
To switch from the handset to the base
phone
1
Press (HOLD) on the handset.
The TALK/BATT LOW lamp
and the LINE lamp on the base
phone will flash slowly.
2
Press (SPEAKERPHONE).
The SPEAKERPHONE lamp on
the base phone will light up.
The TALK/BATT LOW lamp
will flash.
3
When you are done talking,
press (SPEAKERPHONE) again.
(SPEAKERPHONE)
LINE lamp
SPEAKERPHONE
lamp
Switching the phones during a call (continued)
TALK/BATT
LOW lamp