In an automatic call transfer system for use in carrying out transfer of a terminating call from one of telephone sets (T) to another through an exchange (11), a person identification number (ID) is assigned to each of persons movable in a limited area and is generated from a transmitter (TX) conveyed...http://www.google.fr/patents/US4658416?utm_source=gb-gplus-shareBrevet US4658416 - Automatic call transfer system capable of carrying out call transfer without manual operation
Automatic call transfer system capable of carrying out call transfer without ...
