A communications network may include a translation server containing a NGPN-to-HLR mapping table. The translation server may be a single, centralized translation server; or several TSs may be on the network. When a number of translation servers are used, a VLR or other network entity receiving an NGPN...http://www.google.com/patents/US6463270?utm_source=gb-gplus-sharePatent US6463270 - Method and apparatus supporting non-geographic telephone numbers
