| Threshold Level Class Assignments (TLC) Field Descriptions | ||
| Field/Object | Descriptions | Valid Values/Actions |
| CCS Network | Identifies Common Channel Signaling (CCS) Network ID. | Required field for Admin User. 2 alpha characters. Both Input and Output field. |
| Toll-Free Number | Must be a valid Toll-Free Number (TFN). | Required field. The Toll-Free Number's AOS must include the user’s CCS Network. Help Desk users: NPA-NXX-XXXX, ID where “ID” is a 2- character Network ID. Network users: NPA-NXX-XXXX Both Input and Output field. |
| Destination Number | TFNRegistryTM generated a list of all the destination numbers associated with the Customer Record (CAD) (also known as a CR) of the TFN. | NPA-NXX-XXXX Output Field. |
| TLC Override | User specified override of the TFNRegistry generated Threshold Level Class value. Threshold level 15 is used for study purposes. | 2 numeric characters. Valid Values: 1 – 15. Both Input and Output field. |
| Automatic TLC | TFNRegistry calculated TLC value based on the number of lines. | 2 numeric characters. Valid Values: 1 – 14. Output Field. |
| Number of Lines | The number of lines that the given Destination Number can terminate on. Obtained from the CR. | 4 numeric characters. Valid Values: 1 – 9999. Output Field. |