BT 2000 - Manual (Page 8)

Press the BLACK button on the base
unit.
BLACK
BUTTON
A double beep sounds and the display
returns to standby. Your handset is
now registered to the Quartet base unit.
7
Registering your handset
All Additional Handsets must be registered
with the Quartet base unit before you can use
it. You can have up to 3 Additional Handsets
registered to your Quartet base unit, plus the
original handset purchased with the base unit.
Press buttons in order shown
Charge the handset for 24 hours.
The handset display will show
YES Press YES . The display shows
HANDSET 2 , with 2 flashing.
KEYPAD Enter the number of the handset to be
registered. If yours is the second of
two, enter
2 , if the first, enter 1 etc.
OK Press OK . This display shows PRESS
BASE BUTTON.
To register an Additional Handset
Options
REGISTER
YES