Patent ID: 6134316
Filing Date: 2000-10-17
Classification: H04Q,H04W

Abstract:
A telecommunications system having subscriber number relocateablity, the system comprising:a plurality of exchanges between which calls are connected; anda subscriber location server accessed by the plurality of exchanges, for each of a plurality of subscribers the subscriber location server having a changeable mapping of a subscriber number and a network routing prefix;the plurality of exchanges being connected to subscribers and to the subscriber location server whereby, as a calling subscriber initiates a call, a called subscriber number is forwarded to the subscriber location server, whereupon the subscriber location server determines the network routing prefix for the called subscriber number and transmits the network routing prefix to an exchange connected to the calling subscriber, and whereby a concatenation of the network routing prefix and the called subscriber number replaces an address signal field of a called party parameter such that the call can be routed.