hi, i have 3 bt synergy 3505 handsets,when i answer the phone downstairs,what button do you press to transfer the call to another handset upstairs.

william, July 2007

Press Int followed by the number of the handset you want to transfer to ( 1, 2 or 3 )
When other handset answers you can speak to them and then press the blue handset button to transfer.
If the other handset does not answer press Int to speak to your caller again.

Dave, August 2007