Patent ID: 7446673

Claim:
A wireless data communication system, comprising: one or more slave devices, wherein at least one slave device comprises a remote telemetry unit (RTU); one or more slave host computers able to perform remote control of said RTU's and logging of measurement data as well as event logging of alarm messages of said RTU's; a master host computer for directing wireless data messages between the RTU's and the one or more slave host computers, performing remote control of said RTU's and archiving or logging of measurement data and event logging of alarm messages of said RTU's, wherein each wireless data message transmitted from said master host computer to said slave devices is transmitted to multiple slave devices; a data radio communication network connecting said master host computer and said one or more slave devices, wherein each slave device has a unique address in the network; a means for connecting said one or more slave host computers to said data radio communication network, wherein said wireless data messages contain a destination address corresponding to the unique network address of the slave device that the data message is intended for, wherein each slave device is able to compare its unique network address with the destination address contained in the wireless data message, and wherein the wireless data message is submitted to the master host computer prior to being sent to the multiple slave devices and the master host computer re-broadcasts the wireless data message to the multiple slave devices.