DUNS Number means a unique nine digit identification number provided by Dun & Bradstreet for each physical location of Grantee’s organization. Assignment of a DUNS Number is mandatory for all organizations seeking an Award from the state of Illinois.
Calling Number Delivery means a feature that enables an End User to view the directory number of the calling party on a display unit.
Identifying number means a symbol or address that identifies only one unit in a common interest community.
CAS number means the Chemical Abstract Service registry number identifying a particular substance.
Location Routing Number or "LRN" means a unique ten- (10)-digit number assigned to a Central Office Switch in a defined geographic area for call routing purposes. This ten- (10)-digit number serves as a network address and the routing information is stored in a database. Switches routing calls to subscribers whose telephone numbers are in portable NXXs perform a database query to obtain the Location Routing Number that corresponds with the Switch serving the dialed telephone number. Based on the Location Routing Number, the querying Carrier then routes the call to the Switch serving the ported number. The term "LRN" may also be used to refer to a method of LNP. "Long Distance Service" (see "Interexchange Service").