Expression

Description

->

Prefix change. Allows to change or remove initial 
characters of the dialed number.

!

Always send. Substitutes the whole dialed number 
with the one specified after the exclamation mark.

|

Adds suffix to the dialed number

OR

Logical expression allowing to define multiple modifying functions each with different Prefix, only the matching one will executed

[12]

Required exact number length (in this example 12 digits).

[<12]

Required number length less than 12 digits.

>12]

Required number length more than 12 digits