A method for processing dialed outgoing calls in a contact center includes a method for matching a dialed string and a method for translating the dialed string. A method for matching includes identifying a set of available number categories based on a calling profile with which the dialing agent device is configured, matching the dialed string against each of a set of patterns in each of the categories, and translating the dialed string according to the category, if any category matches and if no blocked category matches the dialed string. The number may then be translated to a translated number including a PSTN telephone number and routing characters specifying how the call is to be routed from an IP network to the PSTN. The routing may be selected to minimize the cost of the call.