You build the clid table and tell your lines which number to send out based on which clid table, the example he gave you
KEY 00 SCR 6809 0 <--- MARP the 0 with the arrow is telling you clid table 0, So if you define clid table to show 888-555-1212 thats what it will show for all callers with clid table 0 defined.
JohnThePhoneGuy
"If I can't fix it, it's not broke!