I know this post is old. I ran into this issue with frontier communication. We never did find an answer but I did find a workaround. If you send the calls into an asterisk box then to the dial dictate system the screeching stops. No idea why but it appears to work.
screeching sound when starting new dictation
in DialDictate
Posted
I know this post is old. I ran into this issue with frontier communication. We never did find an answer but I did find a workaround. If you send the calls into an asterisk box then to the dial dictate system the screeching stops. No idea why but it appears to work.