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50 Using additional handsets
You can register up to five GAP 
compliant handsets to your 
BT4000 base to extend your 
phone system without needing 
to install telephone extension 
sockets for each new phone.
If a handset becomes  
un-registered it will need to be 
registered to the base again. 
Please register this handset will 
be displayed, select 
OK then 
follow the instructions starting 
from point 4 below.
You have 2 minutes to complete 
the registration process. After 2 
minutes the In use light on the 
base will stop flashing.
If registration isn’t successful 
the first time, please try again 
incase the base registration 
period ran out of time.
If there are already five 
handsets registered to the 
base, the registration will fail. 
You must de-register another 
handset before you can register 
the new one.
If you’ve bought a BT4000 multiple pack, any 
additional handsets come pre-registered to the 
base. However, if you purchase an additional 
handset separately, you must register it to your 
BT4000 base before it can be used.
Register an additional handset
1. Select 
Menu, scroll   to display Settings and  
press 
OK.
2.  Press 
 to display Registration and press OK.
3. 
Register handset is displayed, press OK.
4. 
Press & hold ‘Find Phone’ on base is displayed.
5. Press and hold 
 on the base until you hear a 
beep and the In use light starts to flash.
6. The handset will display 
Registering handset... 
to indicate the base is in registration mode. If the 
system PIN is not 0000 then you will be prompted 
to enter it, then select 
OK.
7.  Once registration is successful the handset will show 
Handset x registered (with X being the assigned 
handset number). The handset will then synchronise 
data with any other registered handsets, e.g. contacts, 
speed dials and handset names.
1662 BT4000 UG [3].indd   50 09/04/2013   15:03