The dialing rules depend on the country and location of your Communication Manager. The dialing rules help the system to distinguish extensions from trunk calls, based on the length of the dialing string. It ensures that the system uses the right Automatic Route Selection (ARS) code, and if needed, modifies the digits in keeping with Communication Manager and the PSTN requirements.
Avaya one-X Agent 2.5 supports authorization and carrier code, which is mandatory in some countries. It is an optional feature used to prevent access to expensive telephony resources, often international calling, by unauthorized users. An administrator or an Avaya one-X Agent user can enter an authorization code in a user profile, and the types of telephone calls that require this authorization. Avaya one-X Agent then automatically appends the authorization code as required so the user does not have to enter it each time a call is made.
Tip For traveling agents visiting a different location and needing to register with a different Communication Manager, Avaya recommends defining a user profile with appropriate dialing rules for that location and using a login with the corresponding profile so that the dialing rules for the system do not change.

