How to un mute V+ box?

[Glaucus]

Every know and then I some how manage to mute the box can't figure out how to un mute it, or what I do in the first place.
Mute and volume controls tv, so how do I un mute the box?

 

[Glaucus]

The mute button controls the TV, not the v+box.

 

[Glaucus]

Thanks, that's better than pulling the plug out at least.