When the system processes each line of data, it extracts the components of the call record, such as extension number, date, duration etc., using a lookup in the associated template file.
The template file identifies each call type by marking the position on each line of call data, where each element should be extracted from.
In a TDT (template) file, the following element keys are used to define each field of a call record:
| Character | Cell record element |
|---|---|
| a | Date: DAY |
| b | Date: MONTH |
| c | Date: YEAR |
| d | Time: HOUR |
| e | Time: MINUTE |
| f | Time: SECOND |
| g | Duration: HOURS |
| h | Duration: MINUTES |
| i | Duration: SECONDS |
| j | Extension Number |
| k | Trunk Access Code |
| l | Dialled Number / Dialled Digits |
| m | Trunk/Line Number |
| n | Response Time: MINUTES |
| o | Response Time: SECONDS |
| p | Account Code |
| q | Calling Line Identification (CLI) |
| r | History: Value (historic) |
| s | History: Pointer (historic) |