Translation Rules

The translation rules subelement is where the actual translation rules are created. The fields within this element specify the type of translation to be performed, the addition or deletion to be made, and where in the address that change takes place. Translations are not applied to any realm or session agent in this element.

When creating translation rules, first determine the type of translation to perform. The following table lists and describes the three types of number translations.

Field Value	Description
add	This translation type adds a character or string of characters to the address.
delete	This translation type deletes a character or string of characters from the address.
replace	This translation type replaces a character or string of characters within the address. Replace works by first applying the delete parameter then by applying the add parameter.

After you set the translation type, you define the string to add or delete. The wildcard term for a string to delete is the at-sign, @. Finally, you specify the character position in the address to make the addition or deletion.

The character position where an add or delete occurs is called an index. The index starts at 0 (immediately before the leftmost character) and increases by 1 for every position to the right you move. In order to specify the final position in an address, use the dollar-sign, $.

To create a translation rule that deletes a string: