Dialplan

You can configure a dialplan per Identity. There can be ONE dialplan with min. one or more rules. Every rule contains a matching pattern (regexp) und the replace pattern.

e.g.:

<dialplan>
  <rule>
    <pattern>0([0-9]*)</pattern> 
    <replace>0049$1</replace>
  </rule>
  <rule> 
    <pattern>([0-9]+)</pattern>
    <replace>0$1</replace>
  </rule>
</dialplan>

Number 123 will be changed to 0123. Or number 0123 will be changed to 0049123.

Only ONE rule matches. There is no apply chain. The rules will be applied in the given order.