Garmin StreetPilot c550 GPS Receiver "jabra mute working" Questions

...working Any one that I call from my Motorola Razr v3 phone can't here me speak but I can hear them just fine. The microphone setting is not muted and the volume is all the way up. I even tried ...

...Jabra bluetooth headset GNM-OTE3 is fully charged and it is able to connect but it doesn't have sound when I make a call. I couldn't hear the other person's voice at all. I don't know what happened. ...