Couple questions on DID's with a CIX670. I have a new customer with an existing PRI Circuit, they are porting to a new provider. What Program Block do I go to to find out how many digits the system will be looking for from the PRI Provider? If that isn't something we can change is the default 4, 7 , or 10? Additionally, what is the Program block to look at to define new DID's? Thank you!