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If your Duet 450 Clock
Telephone is
connected to a
switchboard, the R
button enables you to
use the switchboards
special features.
Please contact your
communications
manager or
switchboard supplier
for further details.
The R button is also
used in connection
with BT Select
Services. For more
information contact
BT Free on 152 for
residential customers
or 154 for business
customers 8am-6pm,
Monday to Friday.
The secrecy button
allows you to talk to
someone whilst on a
call, without the
person at the other
end of the line hearing
your conversation.
During a call, press
and hold down the
SECRECY button. Your
caller will not be able
to hear you.
Release the SECRECY
button to talk to your
caller again.
Using the R (Recall)
button
1
2
Please note:
If you are using the R
button as part of a stored
number, it must be
followed by a pause. See
‘To store a pause’
10
Using the Secrecy
button
SECRECY
R