Problem with BT Synergy 2150 Cordless Dect Phone?

I have a few problems with my BT Synergy 2150 DECT phone.
It has got only one handset. The questions are
1. When base station is connected to the mains, the 'IN-USE' led is flashing continously, even though no calls are made from it.
2. After inserting a new battery in handset, still there is NO display on the Handset.
3. It seems no signal between base station and handset. This is true because when I press 'Page' button, there is no beep sound on handset.

Kindly answer my questions.

Thanks & Regards
Srihari