I have installed an IP Softphone 2050 on a customers laptop. When a call comes into the 2050, I can see the line flashing, but it does not ring. I can talk to them and they can talk to me as well. The issue is, it does not ring into the headset. I've tried to set the headset as the ringer in the settings as well as tried to have the phone ring through his pc speakers, but nothing seems to be working. Any ideas?