Sony SPP-935 Operating Instructions Manual page 22

Switching the phones during a call (continued)
To switch from the handset to the base
phone
22
EN
Advanced Features
1
Press (HOLD) on the handset.
The TALK lamp will flash slowly.
2
Press (SPEAKERPHONE).
The SPEAKERPHONE lamp will
light up. The TALK lamp will
repeat sets of two flashes.
3
When you are done talking, press
(SPEAKERPHONE) again.