I have a Merlin Legend R 7.0 V 10.0 I have two 408 gs/ls-mlx cards, 007 MLM, 800 DID card. Here is the thing I have 8 lines comming out from a Adtran unit ( so there like pots line). Each line is a private line on an ext. When there on the private line some one calls in and get a busy. I want the call to go to voicemail at there ext. How do I do this with the DID card Or can I. Trunks are loop start,# of digits sent to the CPE 0 ,This is the info from the phone company Globalcom.