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Login to the console of your sipX host and navigate to the directory /etc/sipxpbx/dialplan. You will find the following files: {{Box File| /etc/sipxpbx/dialplan|
| Panel |
|---|
ch.dialrules.beans.xml |
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The currently active default dial plan is represented by the file dialrules.beans.xml. In a normal installation, this file is a copy of the file us.dialrules.beans.xml.
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Once you are happy with a new set of rules consider posting them on the list. It'll help others and it'll help you (in case of any format changes).Examples are here: http://scm.sipfoundry.org/rep/sipX/main/sipXconfig/neoconf/etc/dialplan