I just got the PN-820 today from Verizon (had to replace my Kyocera 7135. Sigh.)

I've been able to figure out just about everything and it seems to work OK. But when I try to use the headset, the person I'm calling can only hear me very faintly. I can hear them fine.

I called my land line and left messages and tried a bunch of things - adjusting the headset volume, reseating the jack, etc. - but nothing seems to help. This happens with the headset included in the box as well as my other Plantronics headset.

Anybody else run into this? TIA for the help.