Which DS8870 Technical and Delivery Assessment (TDA) must be performed for a customer that has a DS8 seenagape 11 years ago Which DS8870 Technical and Delivery Assessment (TDA) must be performed for acustomer that has a DS8870 system already installed in the same location? A.pre-sale TDA B.post-sale TDA C.pre-install TDA D.DA is not required ← Previous question Next question →