When a lead has been tagged as a DNC, the system check the numbers in that lead and will add all of those numbers in the DNC list.

If incase that number is already in the hopper, the system will automatically remove that lead from the hopper making sure that its won't be dialed anymore.

For example:

An agent tagged Lead A as DNC and that lead has 2 numbers in it.

The primary phone number is 8188181245 and the cellphone number is 2122127845.

The system will add those two numbers in the DNC list.

Now in the hopper, the system sees that LEAD B is already in it but its using 2122127845 as its primary number.

The system will automatically remove LEAD B from the hopper to make sure that it won't be dialed again.