Two of the handsets are displaying 'Please register'. How do i get them to register? What does this mean?

Faz, September 2009

2 of my units have stopped working and oly Display (TEST MODE)

Dennis Scott, July 2020

No ringtone

graham, August 2014

thank u so much for that julie...been tearing my hair out for the last couple of days. Surely they should include that in the instructions manual!!

amina, October 2011

you have to have all the phones near the main base. press and hold find on the base until a green light flashes. take your first phone then press menu then scroll till you find registration then select register handset then do the same for all other handsets. a full user manual is available http://www.shop.bt.com/content/uni2/documentation/5fjc/full_user_guide.pdf
hope this helps it took me ages to find the answer

julie, November 2009