I am installing call center application for checking the DO NOT CALL LIST for the USA DO NOT CALL LIST. i have asterisk checking the call fine now. The isssue I am having with the digium wildcard is that there is a crackling nosie when the channel is picked up. When the cal loads hit 10 or 15 the crackling can be heard on all handsets. This is a NORSTAR System passing a t1 into the DIGIUM Card TDM 205P WIldcard and than do the DNC list check and than passing out to t1 carrier. I am using a t1 patch cable from norstar system to elastix server and than normal network coard to pass to t1 box. The crackling get pretty bad when the call loads go up. Also the echo Canceller will not also work or install properly with elastix. ANYONE ANY CLUE ! I have never seen this before.