Help
If you need some help, call us on 0800 145 6789* or go to bt.com/producthelp 
80
No Caller Display number/name displayed 
•  Have you subscribed to a Caller Display service from your network provider?  
See page 37. 
•  The caller may have withheld their number.
•  Network may not have the callers number information.
•  An exact name/number match was not found in your contacts. Check that you’ve 
stored the full STD dialling code. 
Can’t register a handset to a base 
•  You can register up to five handsets to your BT6500 base and you can register 
your BT6500 handset to up to four bases. Check that you’ve not exceeded the 
limits.
•  Check that you’ve entered the correct system PIN number (default PIN 0000). 
•  Check that you’re at least one metre away from other electrical equipment to 
avoid interference when registering. 
Base unit does not ring, but the lights are on 
•  Have you connected the telephone line correctly?
•  Do Not Disturb may be switched on, see page 27.
•  Block nuisance calls may be switched on, see page 28.
•  Is the base ringer set to off? 
•  You may have a faulty line or socket. Try using another socket or line.  
If you are a BT customer then please call 0800 800 151 or your network provider 
if you still have problems.