from the docs
*4
Stop or start displaying modified digits. Modified digits are displayed on the sets and in the SMDR records (SMDR must be enabled in CDE Form 16, Trunk Groups). The first time *4 appears in a digit string, the system stops displaying the following modified digits. The next time *4 appears the system starts displaying the following modified digits. You can repeat *4 in a digit string to stop or start the displaying of digits.
*6
Insert caller’s ID (for analog networking), not just analog networking though