1. A method for routing telephone calls in a telephony network maintained by a network service provider, comprising steps of: (a) accepting a call from a caller at a network routing point; (b) providing access to the network routing point to a customer of the network service provider for routing the call; (c) cross-referencing an identifier associated with the call to a database entity in a coded and condensed (metadata-based) information system maintained by the customer; (d) providing a routing destination to tie network for routing the call to a selected one of plural customer facilities based on the metadata-based information retrieved and (e) employing a second metadata-based information system at the selected facility to further route the call.