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Synergy 4100 – Issue 3 – Edition 1 – 21.08.06 – 7771
If you experience any problems, please call the Helpline on 0870 605 8047 or email bt.helpdesk@suncorptech.com
4. Use the keypad to enter the number of the base you
want to register to (1 – 4), then select the 
OK option.
The display shows, e.g. 
Search for Base 2
(for base 2)
and the  icon flashes.
5. Enter your 4 digit PIN, then select the 
OK option.
When the base is located, your handset display will be
updated with the handset number for the selected base.
Select a base
If your BT Synergy 4000 handset is registered to more
than one base, you can select which base to use.
Alternatively, if you select 
Auto
your handset will
automatically select the base with the best reception.
1. Press or until 
Registration
is displayed, then
select the 
OK option.
2. Press or until 
Select Base
is displayed, then
select the 
OK option.
3. Press  or  to select a base (
1
–
4
or 
Auto
) then
select the 
OK option.
4. Press 
and hold to exit and return to standby.