You go to the target line field and assign the public received of the target line with, say, 0522345611 (if the telco is sending you 10 digits) and set the prime set of the target line to DN 211. If your public received number is 0522345625, then your prime set for that target line is 225, etc.
If the telco is only sending you four digits, then you would assign 56XX as the public received numbers to the particular target lines.
NCSS NCTS NCTE