help | 2 Configuring the Contact TAPI Service Provider | Configuration | Advanced
Advanced
Under the Advanced tab you can change the format of the telephone numbers for incoming and outgoing calls.
Under MakeCall Rules you can add rules that change the format of phone numbers when dialling out. This can be useful if, for example, your application stores and dials phone numbers in a different format than you want. You can
*Add new rules
*Edit existing rules
*Delete rules
*Set the priority of the rules
To add a new rule 
1 Click on the Advanced tab.
2 Click on Add to add a new rule.
*The Rule dialogue appears.
Label
Explanation
RegEx Search Pattern
Use regular expressions (ECMAScript) to define the search patterns.
Replace
Add the new value.
Example
RegEx Search Pattern: ^[+]310|^\b00310
Replace: +31
Comment
You can optionally enter a note.
3 Test your expressions by entering your search patterns in the Test field.
*In the MakeCall field you can see which number is used while dialling out.
4 Open the dropdown menu Format phone numbers and select the format in which the caller ID of incoming calls should be sent:
*Local
*National
*International
5 Click on OK to save the settings.