Motorola DLR1020 Manuel D'utilisation page 54

5. User A presses PTT button to talk privately to
User B. The Top button LED indicator for both
radio A and radio B illuminate solid orange.
User B hears radio voice prompt "Private" and
radio plays a distinctive Private TPT.
"Private"
B
Private Call in
progress
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English
B
A
A
6. Whenever user A or B presses the PTT button
to reply back, they are talking privately to each
other. Nobody else hears them. Radio plays a
distinctive Private TPT.
B
B
Private Call in
progress
A
A