The handset lifter hsl10 lets you remotely answer and end a desktop phone call with your bw900 the hsl 10 is connected to the bw 900 base station which is in touch with your wireless headset by answering or ending the call on your wireless system you send a command to the hsl 10 to raise or lower the telephone handset of course it works within the entire range of your system39s base station what39s more the handset lifter can be trained to recognize two different ring tones fo