CALL ROUTING FOR A MULTI -MODE TERMINAL BEING IN A MULTI-MODE COMMUNICATIONS SYSTEM

摘要

Described herein is multi-mode communications system (200) that comprises at least one IP network, at least one mobile communications network, at least one multi-mode terminal (175) connectable to each of said IP network and the mobile telecommunications network, a routing server (120) for routing incoming calls from a caller to a multi-mode terminal (175), and an adaptive location register database (230) for storing at least one record relating to each multi-mode terminal (175). An incoming call (205) is received by the routing server (120). The routing server (120) interrogates an adaptive location register server (220) that is associated with the adaptive location register database (230) to determine current availability for routing the incoming call (205) to the multi-mode terminal (175). The adaptive location register server (220) provides the routing server (120) with data retrieved from the adaptive location register database (230) to indicate which network is more suitable over which the incoming call (205) is to be routed. in accordance with stored subscriber data relating to the multi-mode terminal (175).