Synergy 4000 – Edition 3 – 15.05.06 – 7372
If you experience any problems, please call the Helpline on 0870 605 8047 or email bt.helpdesk@suncorptech.com
Option button (middle)
In standby or talk mode, press to 
open the Phonebook.
Option button (left)
In standby or talk mode, when the 
symbol is displayed, press to open
the Calls list.
In menu mode, press to go back to
the previous screen.
Menu/Volume +/Scroll Up
In standby mode, press to access 
and scroll through the menu 
options.
In talk mode, press to increase the
handset earpiece volume.
Use to scroll up through the 
phonebook and Calls list.
Talk / Handsfree
In standby mode, press to make or
receive calls.
In talk mode, use to switch 
handsfree on and off.
Recall/Call Waiting/Intercom
For use with a switchboard/PBX 
and BT Calling Features.
For use with Call Waiting.
In standby mode, use to make an
internal call.
Handset buttons
Calls light
Illuminates when the line is in use. 
Flashes when receiving a call.
Display with backlight
Option button (right)
In talk mode, press to switch 
mute on/off.
In menu mode, press to confirm 
a displayed option.
End call/ Delete/Keypad lock
In talk mode, press to end a call. 
In entry mode, press to 
delete digits. 
In menu mode, press and hold 
to exit and return to standby. 
In standby mode, use to lock 
the keypad.
Calls/Volume -/Scroll Down
In standby mode, press to access 
and scroll through the menu 
options.
In talk mode, press to decrease the 
handset earpiece volume.
Use to scroll down through the 
phonebook and Calls list.
Keypad
Use to enter digits and characters.
Last number redial/Pause
In standby mode, use to redial any 
of the last 20 numbers called.
In talk mode, press to enter a pause 
in a number.
Getting to know your phone
5
Please refer to your BT Synergy 4100 or 4500 User Guide for full details.