NIS Numbers not reporting correctly

Hi guys,
Hoping you can help me with a setting issue. Our dialer running in AMD is statusing a number of files NA when it should be detecting them as DC. When we call them manually, we hear the recording that the number is not in service.
Is there an area where we can tweak the detection settings for DC numbers?
Thanks!
Hoping you can help me with a setting issue. Our dialer running in AMD is statusing a number of files NA when it should be detecting them as DC. When we call them manually, we hear the recording that the number is not in service.
Is there an area where we can tweak the detection settings for DC numbers?
Thanks!