A portable phone is equipped with a position detector that detects the geographical position of the portable phone, and a telephone system may ring one or more land-based phones or portable phones according to the geographical position of the portable phone. One or more geographical regions are defined,...http://www.google.fr/patents/US7130643?utm_source=gb-gplus-shareBrevet US7130643 - Method and system for selectively paging a communication device based on self-detected position of the communication device
Method and system for selectively paging a communication device based on ...
