Linksys CIT310 on Vista, other party's voice is not coming over the CIT310

I had the same problem. I got it figured out though. I called linksys tech support and they told me to update the drivers. At first I got no success. I eventually figured out that you have to manually deleted the old drivers throught your device manager before updating to the new drivers. The link for the new drivers is:

http//:www.linksys.com/vista

Once you get to this page click on the "download drivers" link and then scroll down until you see the 32 bit driver for CIT310 and click. I hope this helps.