Sony SPP-ID910 - Manual (Page 23)

Using Caller ID with call waiting service
In order to use the “Caller ID with call waiting” service, you must
subscribe to a telephone company that offers Caller ID service
combined with “call waiting” service.
Before you use this feature, make sure that you have subscribed to
both Caller ID service and “call waiting” service with your telephone
company. Also ask the company if it offers Caller ID service combined
with “call waiting” service.
When a new call comes in while you are talking, you will hear
notification beeps from the handset and the volume is momentarily
muted. The new caller’s phone number (or name) appears on the
tiisplay.
201-1234567
or
XYZ COMPANY
1 when you want to switch to the new call, press FLASH
( ta O^.
The current caller is put on hold and you can answer the
new call.
2 When you want to switch back to the first caller, press
FLASH
(TALK)
again.
Pressing FLASH ( talk ) lets you switch between the two
calls.
Note
If FLASH C talk ) is pressed when there is no new incoming call, the call may be
disconnected.
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Advanced Features J 23^^