CounterPath Bria 4 Windows User Guide - Retail Deployments - Manual (Page 107)

Transformation Keywords
Order of Transformations
These transformations are always performed in the following order (the order in which the transformations are
entered in the dial plan is not significant):
prestrip > poststrip > pre > post > replace
Keyword Description
prestrip Strip the first n characters from the input before
placing the call.
poststrip Remove n number of characters from the end of
the input before placing the call.
pre Add the specified account prefix to the input
before placing the call.
post Attach the specified postfix to the input before
placing the call.
replace Replaces the input with the specified string
before placing the call.