Now Problem has been solved from Airtel Technical Dep. , Thanks to Mr. Rakesh ( DD+ & HD Dep. , Gurgaon , Airtel )
after Complaint on their FB Page , CC Call me & they arrange call to Mr Rakesh on Day after immediately and I Said that on SMS HD 5.1 not working Properly , Center & Surround Chanel are Still Muted STEREO=DD=DD+ & After realized & Checking personally by He on His HT then again he Called me that's this is Genuine problem & I will look at Night on Dt-07/08/2015 ( yesterday ) & he said that i will resolve this problem at midnight
Voila now from today morning all 5.1 Chanel speaker Working Perfectly both on DD & DD+ & on Stereo is working 2.1 as should it to Be Work