We are on a Merlin Legend...release 6.0 or 7.0. I'm having a problem when the operator transfers a caller offsite. I've actually had this happen to me. She has the caller on line, presses transfer dials the number to be transferred to, when she completes the transfer, there is a high pitch shreek on the line and you are forced to hangup and dial back. I have 3 Merlins in other places and this problem doesn't exist. Any suggestions would be greatly appreciated. Thanks.