Sounds like the normal registration of handset to base. Press until you get the MENU screen. When it flashes BS 1 2 3 4 , it is asking which base to register to. Press 1. When it asks for the PIN press 0000. It should then search, register the handset to the base and work properly. At least, that's how mine works cos I just redid it to check.
Phil Weston
And the second answer hasn't auto deleted all the instructions I put in - I hope!
Phil, March 2008