A system for communication between a POS terminal and a destination host, which may be a credit transaction authorization entity. The system includes a POS terminal, RF network port, a packet switched network, a destination node, and a destination host. The system eliminates dependence on the public...http://www.google.de/patents/US5541925?utm_source=gb-gplus-sharePatent US5541925 - Point of sale system that bypasses the public telephone network
