5.1 sound problem

[ayaanakaash]

when i turn on dolby sound of any channel my led volume automatic full up and dishtv remote volume didn't work but when i off this its work on remote volume.
what happend with dishnxt hd box??? i also changed hdmi cables but prb same!
plz help

 

[mss]

you cannot control Dolby digital sound through set top box remote, because it will decrypt in tv or home theater. if they allowed to decrypt in set top box level, again it will degrade while transmitting to tv.