Case:--------CE -  (1841 + 4 s hdsl Hwic) device ISP  -  DSLAM (Zyxel) Dslam and Hwic supports ITU-T 991.2 standards In cisco compatiblity data sheet, it is compatible only with DSLAM ALcatel, ECI, Lucent But Zyxel is not mentioned. Here are my queri...