ANI/DNIS/ISDN/CLASS Number Delivery Reporting
This field applies to ANI/DNIS or CLASS for analog trunks (on a controller with embedded analog). Select "Yes" if ANI/DNIS or CLASS digits are to be part of the SMDR reports.
Standardized Call ID Format
Select "Yes" to enable standardized call ID format functionality (the Standardized Network OLI option must also be enabled).
Extended Digit Length
Select "Yes" if the Called, Calling and Third Party fields are to allow space for 7-digit extension numbers, and the Duration of Call field is to allow space for up to 10,000 hours (9999 hours, 59 minutes, 59 seconds).
I think these are all relevant (I ahve it in the back of my mind that the first one is also needed for all trunks...but not sure.