This one is a classic. If they can see you, your setup is fine. They have work to do on their end. That is, my bet is it's the usual issues when the caller has something to fix.
I have a UE40F6500 Smart 3D television.
With a HW-F450 soundbar connected.
I recently purchased a VG-STC4000 TV camera to use with Skype.
Connected all up as per instructions, but with our first caller, she could see and hear us and we could see her. Unfortunately, we could not hear her.
With so many remotes doing so many things, I may have cocked up here.
Can you help?