Patent ID: 6820049
Filing Date: 2004-11-16
Classification: H04L,H04W

Abstract:
A data collection system comprising:a GSM network; a user application server coupled to said GSM network; a data terminal apparatus including a communications bridge, a first interface, and a wireless radio, said wireless radio configured to connect to said GSM network; and a user equipment coupled to said data terminal apparatus through said first interface, said user equipment configured to collect and send data through said first interface as if said user equipment is communicating over a circuit switched call link; wherein: said communications bridge is configured to simulate said circuit switched call link to said user equipment and to communicate said data over said GSM network through said wireless radio using a non-circuit switched call link, and said GSM network is configured to route said data to said user application server for processing, and said communications bridge comprises application layer object code built over a GSM protocol stack associated with said wireless radio, said application layer object code being configured to handle incoming AT commands from said user equipment and handle said simulation of said circuit switched call link to said user equipment.